diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source-options/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source-options/index.spec.tsx
new file mode 100644
index 0000000000..4ae74be9d1
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source-options/index.spec.tsx
@@ -0,0 +1,1662 @@
+import { act, fireEvent, render, screen } from '@testing-library/react'
+import { renderHook } from '@testing-library/react'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import React from 'react'
+import DataSourceOptions from './index'
+import OptionCard from './option-card'
+import DatasourceIcon from './datasource-icon'
+import { useDatasourceIcon } from './hooks'
+import type { DataSourceNodeType } from '@/app/components/workflow/nodes/data-source/types'
+import { BlockEnum, type Node } from '@/app/components/workflow/types'
+import type { Datasource } from '@/app/components/rag-pipeline/components/panel/test-run/types'
+
+// ==========================================
+// Mock External Dependencies
+// ==========================================
+
+// Mock useDatasourceOptions hook from parent hooks
+const mockUseDatasourceOptions = jest.fn()
+jest.mock('../hooks', () => ({
+  useDatasourceOptions: (nodes: Node<DataSourceNodeType>[]) => mockUseDatasourceOptions(nodes),
+}))
+
+// Mock useDataSourceList API hook
+const mockUseDataSourceList = jest.fn()
+jest.mock('@/service/use-pipeline', () => ({
+  useDataSourceList: (enabled: boolean) => mockUseDataSourceList(enabled),
+}))
+
+// Mock transformDataSourceToTool utility
+const mockTransformDataSourceToTool = jest.fn()
+jest.mock('@/app/components/workflow/block-selector/utils', () => ({
+  transformDataSourceToTool: (item: unknown) => mockTransformDataSourceToTool(item),
+}))
+
+// Mock basePath
+jest.mock('@/utils/var', () => ({
+  basePath: '/mock-base-path',
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+
+const createMockDataSourceNodeData = (overrides?: Partial<DataSourceNodeType>): DataSourceNodeType => ({
+  title: 'Test Data Source',
+  desc: 'Test description',
+  type: BlockEnum.DataSource,
+  plugin_id: 'test-plugin-id',
+  provider_type: 'local_file',
+  provider_name: 'Test Provider',
+  datasource_name: 'test-datasource',
+  datasource_label: 'Test Datasource Label',
+  datasource_parameters: {},
+  datasource_configurations: {},
+  ...overrides,
+})
+
+const createMockPipelineNode = (overrides?: Partial<Node<DataSourceNodeType>>): Node<DataSourceNodeType> => {
+  const nodeData = createMockDataSourceNodeData(overrides?.data)
+  return {
+    id: `node-${Math.random().toString(36).slice(2, 9)}`,
+    type: 'custom',
+    position: { x: 0, y: 0 },
+    data: nodeData,
+    ...overrides,
+  }
+}
+
+const createMockPipelineNodes = (count = 3): Node<DataSourceNodeType>[] => {
+  return Array.from({ length: count }, (_, i) =>
+    createMockPipelineNode({
+      id: `node-${i + 1}`,
+      data: createMockDataSourceNodeData({
+        title: `Data Source ${i + 1}`,
+        plugin_id: `plugin-${i + 1}`,
+        datasource_name: `datasource-${i + 1}`,
+      }),
+    }),
+  )
+}
+
+const createMockDatasourceOption = (
+  node: Node<DataSourceNodeType>,
+) => ({
+  label: node.data.title,
+  value: node.id,
+  data: node.data,
+})
+
+const createMockDataSourceListItem = (overrides?: Record<string, unknown>) => ({
+  declaration: {
+    identity: {
+      icon: '/icons/test-icon.png',
+      name: 'test-datasource',
+      label: { en_US: 'Test Datasource' },
+    },
+    provider: 'test-provider',
+  },
+  plugin_id: 'test-plugin-id',
+  ...overrides,
+})
+
+// ==========================================
+// Test Utilities
+// ==========================================
+
+const createQueryClient = () => new QueryClient({
+  defaultOptions: {
+    queries: { retry: false },
+    mutations: { retry: false },
+  },
+})
+
+const renderWithProviders = (
+  ui: React.ReactElement,
+  queryClient?: QueryClient,
+) => {
+  const client = queryClient || createQueryClient()
+  return render(
+    <QueryClientProvider client={client}>
+      {ui}
+    </QueryClientProvider>,
+  )
+}
+
+const createHookWrapper = () => {
+  const queryClient = createQueryClient()
+  return ({ children }: { children: React.ReactNode }) => (
+    <QueryClientProvider client={queryClient}>
+      {children}
+    </QueryClientProvider>
+  )
+}
+
+// ==========================================
+// DatasourceIcon Tests
+// ==========================================
+describe('DatasourceIcon', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      const { container } = render(<DatasourceIcon iconUrl="https://example.com/icon.png" />)
+
+      // Assert
+      expect(container.firstChild).toBeInTheDocument()
+    })
+
+    it('should render icon with background image', () => {
+      // Arrange
+      const iconUrl = 'https://example.com/icon.png'
+
+      // Act
+      const { container } = render(<DatasourceIcon iconUrl={iconUrl} />)
+
+      // Assert
+      const iconDiv = container.querySelector('[style*="background-image"]')
+      expect(iconDiv).toHaveStyle({ backgroundImage: `url(${iconUrl})` })
+    })
+
+    it('should render with default size (sm)', () => {
+      // Arrange & Act
+      const { container } = render(<DatasourceIcon iconUrl="https://example.com/icon.png" />)
+
+      // Assert - Default size is 'sm' which maps to 'w-5 h-5'
+      expect(container.firstChild).toHaveClass('w-5')
+      expect(container.firstChild).toHaveClass('h-5')
+    })
+  })
+
+  describe('Props', () => {
+    describe('size', () => {
+      it('should render with xs size', () => {
+        // Arrange & Act
+        const { container } = render(
+          <DatasourceIcon iconUrl="https://example.com/icon.png" size="xs" />,
+        )
+
+        // Assert
+        expect(container.firstChild).toHaveClass('w-4')
+        expect(container.firstChild).toHaveClass('h-4')
+        expect(container.firstChild).toHaveClass('rounded-[5px]')
+      })
+
+      it('should render with sm size', () => {
+        // Arrange & Act
+        const { container } = render(
+          <DatasourceIcon iconUrl="https://example.com/icon.png" size="sm" />,
+        )
+
+        // Assert
+        expect(container.firstChild).toHaveClass('w-5')
+        expect(container.firstChild).toHaveClass('h-5')
+        expect(container.firstChild).toHaveClass('rounded-md')
+      })
+
+      it('should render with md size', () => {
+        // Arrange & Act
+        const { container } = render(
+          <DatasourceIcon iconUrl="https://example.com/icon.png" size="md" />,
+        )
+
+        // Assert
+        expect(container.firstChild).toHaveClass('w-6')
+        expect(container.firstChild).toHaveClass('h-6')
+        expect(container.firstChild).toHaveClass('rounded-lg')
+      })
+    })
+
+    describe('className', () => {
+      it('should apply custom className', () => {
+        // Arrange & Act
+        const { container } = render(
+          <DatasourceIcon iconUrl="https://example.com/icon.png" className="custom-class" />,
+        )
+
+        // Assert
+        expect(container.firstChild).toHaveClass('custom-class')
+      })
+
+      it('should merge custom className with default classes', () => {
+        // Arrange & Act
+        const { container } = render(
+          <DatasourceIcon iconUrl="https://example.com/icon.png" className="custom-class" size="sm" />,
+        )
+
+        // Assert
+        expect(container.firstChild).toHaveClass('custom-class')
+        expect(container.firstChild).toHaveClass('w-5')
+        expect(container.firstChild).toHaveClass('h-5')
+      })
+    })
+
+    describe('iconUrl', () => {
+      it('should handle empty iconUrl', () => {
+        // Arrange & Act
+        const { container } = render(<DatasourceIcon iconUrl="" />)
+
+        // Assert
+        const iconDiv = container.querySelector('[style*="background-image"]')
+        expect(iconDiv).toHaveStyle({ backgroundImage: 'url()' })
+      })
+
+      it('should handle special characters in iconUrl', () => {
+        // Arrange
+        const iconUrl = 'https://example.com/icon.png?param=value&other=123'
+
+        // Act
+        const { container } = render(<DatasourceIcon iconUrl={iconUrl} />)
+
+        // Assert
+        const iconDiv = container.querySelector('[style*="background-image"]')
+        expect(iconDiv).toHaveStyle({ backgroundImage: `url(${iconUrl})` })
+      })
+
+      it('should handle data URL as iconUrl', () => {
+        // Arrange
+        const dataUrl = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=='
+
+        // Act
+        const { container } = render(<DatasourceIcon iconUrl={dataUrl} />)
+
+        // Assert
+        const iconDiv = container.querySelector('[style*="background-image"]')
+        expect(iconDiv).toBeInTheDocument()
+      })
+    })
+  })
+
+  describe('Styling', () => {
+    it('should have flex container classes', () => {
+      // Arrange & Act
+      const { container } = render(<DatasourceIcon iconUrl="https://example.com/icon.png" />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('flex')
+      expect(container.firstChild).toHaveClass('items-center')
+      expect(container.firstChild).toHaveClass('justify-center')
+    })
+
+    it('should have shadow-xs class from size map', () => {
+      // Arrange & Act
+      const { container } = render(<DatasourceIcon iconUrl="https://example.com/icon.png" />)
+
+      // Assert - Default size 'sm' has shadow-xs
+      expect(container.firstChild).toHaveClass('shadow-xs')
+    })
+
+    it('should have inner div with bg-cover class', () => {
+      // Arrange & Act
+      const { container } = render(<DatasourceIcon iconUrl="https://example.com/icon.png" />)
+
+      // Assert
+      const innerDiv = container.querySelector('.bg-cover')
+      expect(innerDiv).toBeInTheDocument()
+      expect(innerDiv).toHaveClass('bg-center')
+      expect(innerDiv).toHaveClass('rounded-md')
+    })
+  })
+})
+
+// ==========================================
+// useDatasourceIcon Hook Tests
+// ==========================================
+describe('useDatasourceIcon', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+    mockUseDataSourceList.mockReturnValue({
+      data: [],
+      isSuccess: false,
+    })
+    mockTransformDataSourceToTool.mockImplementation(item => ({
+      plugin_id: item.plugin_id,
+      icon: item.declaration?.identity?.icon,
+    }))
+  })
+
+  describe('Loading State', () => {
+    it('should return undefined when data is not loaded', () => {
+      // Arrange
+      mockUseDataSourceList.mockReturnValue({
+        data: undefined,
+        isSuccess: false,
+      })
+      const nodeData = createMockDataSourceNodeData()
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert
+      expect(result.current).toBeUndefined()
+    })
+
+    it('should call useDataSourceList with true', () => {
+      // Arrange
+      const nodeData = createMockDataSourceNodeData()
+
+      // Act
+      renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert
+      expect(mockUseDataSourceList).toHaveBeenCalledWith(true)
+    })
+  })
+
+  describe('Success State', () => {
+    it('should return icon when data is loaded and plugin matches', () => {
+      // Arrange
+      const mockDataSourceList = [
+        createMockDataSourceListItem({
+          plugin_id: 'test-plugin-id',
+          declaration: {
+            identity: {
+              icon: '/icons/test-icon.png',
+              name: 'test',
+              label: { en_US: 'Test' },
+            },
+          },
+        }),
+      ]
+      mockUseDataSourceList.mockReturnValue({
+        data: mockDataSourceList,
+        isSuccess: true,
+      })
+      mockTransformDataSourceToTool.mockImplementation(item => ({
+        plugin_id: item.plugin_id,
+        icon: item.declaration?.identity?.icon,
+      }))
+      const nodeData = createMockDataSourceNodeData({ plugin_id: 'test-plugin-id' })
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert - Icon should have basePath prepended
+      expect(result.current).toBe('/mock-base-path/icons/test-icon.png')
+    })
+
+    it('should return undefined when plugin does not match', () => {
+      // Arrange
+      const mockDataSourceList = [
+        createMockDataSourceListItem({
+          plugin_id: 'other-plugin-id',
+        }),
+      ]
+      mockUseDataSourceList.mockReturnValue({
+        data: mockDataSourceList,
+        isSuccess: true,
+      })
+      const nodeData = createMockDataSourceNodeData({ plugin_id: 'test-plugin-id' })
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert
+      expect(result.current).toBeUndefined()
+    })
+
+    it('should prepend basePath to icon when icon does not include basePath', () => {
+      // Arrange
+      const mockDataSourceList = [
+        createMockDataSourceListItem({
+          plugin_id: 'test-plugin-id',
+          declaration: {
+            identity: {
+              icon: '/icons/test-icon.png',
+              name: 'test',
+              label: { en_US: 'Test' },
+            },
+          },
+        }),
+      ]
+      mockUseDataSourceList.mockReturnValue({
+        data: mockDataSourceList,
+        isSuccess: true,
+      })
+      mockTransformDataSourceToTool.mockImplementation(item => ({
+        plugin_id: item.plugin_id,
+        icon: item.declaration?.identity?.icon,
+      }))
+      const nodeData = createMockDataSourceNodeData({ plugin_id: 'test-plugin-id' })
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert - Icon should have basePath prepended
+      expect(result.current).toBe('/mock-base-path/icons/test-icon.png')
+    })
+
+    it('should not prepend basePath when icon already includes basePath', () => {
+      // Arrange
+      const mockDataSourceList = [
+        createMockDataSourceListItem({
+          plugin_id: 'test-plugin-id',
+          declaration: {
+            identity: {
+              icon: '/mock-base-path/icons/test-icon.png',
+              name: 'test',
+              label: { en_US: 'Test' },
+            },
+          },
+        }),
+      ]
+      mockUseDataSourceList.mockReturnValue({
+        data: mockDataSourceList,
+        isSuccess: true,
+      })
+      mockTransformDataSourceToTool.mockImplementation(item => ({
+        plugin_id: item.plugin_id,
+        icon: item.declaration?.identity?.icon,
+      }))
+      const nodeData = createMockDataSourceNodeData({ plugin_id: 'test-plugin-id' })
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert - Icon should not be modified
+      expect(result.current).toBe('/mock-base-path/icons/test-icon.png')
+    })
+  })
+
+  describe('Edge Cases', () => {
+    it('should handle empty dataSourceList', () => {
+      // Arrange
+      mockUseDataSourceList.mockReturnValue({
+        data: [],
+        isSuccess: true,
+      })
+      const nodeData = createMockDataSourceNodeData()
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert
+      expect(result.current).toBeUndefined()
+    })
+
+    it('should handle null dataSourceList', () => {
+      // Arrange
+      mockUseDataSourceList.mockReturnValue({
+        data: null,
+        isSuccess: true,
+      })
+      const nodeData = createMockDataSourceNodeData()
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert
+      expect(result.current).toBeUndefined()
+    })
+
+    it('should handle icon as non-string type', () => {
+      // Arrange
+      const mockDataSourceList = [
+        createMockDataSourceListItem({
+          plugin_id: 'test-plugin-id',
+          declaration: {
+            identity: {
+              icon: { url: '/icons/test-icon.png' }, // Object instead of string
+              name: 'test',
+              label: { en_US: 'Test' },
+            },
+          },
+        }),
+      ]
+      mockUseDataSourceList.mockReturnValue({
+        data: mockDataSourceList,
+        isSuccess: true,
+      })
+      mockTransformDataSourceToTool.mockImplementation(item => ({
+        plugin_id: item.plugin_id,
+        icon: item.declaration?.identity?.icon,
+      }))
+      const nodeData = createMockDataSourceNodeData({ plugin_id: 'test-plugin-id' })
+
+      // Act
+      const { result } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+
+      // Assert - Should return the icon object as-is since it's not a string
+      expect(result.current).toEqual({ url: '/icons/test-icon.png' })
+    })
+
+    it('should memoize result based on plugin_id', () => {
+      // Arrange
+      const mockDataSourceList = [
+        createMockDataSourceListItem({
+          plugin_id: 'test-plugin-id',
+        }),
+      ]
+      mockUseDataSourceList.mockReturnValue({
+        data: mockDataSourceList,
+        isSuccess: true,
+      })
+      const nodeData = createMockDataSourceNodeData({ plugin_id: 'test-plugin-id' })
+
+      // Act
+      const { result, rerender } = renderHook(() => useDatasourceIcon(nodeData), {
+        wrapper: createHookWrapper(),
+      })
+      const firstResult = result.current
+
+      // Rerender with same props
+      rerender()
+
+      // Assert - Should return the same memoized result
+      expect(result.current).toBe(firstResult)
+    })
+  })
+})
+
+// ==========================================
+// OptionCard Tests
+// ==========================================
+describe('OptionCard', () => {
+  const defaultProps = {
+    label: 'Test Option',
+    selected: false,
+    nodeData: createMockDataSourceNodeData(),
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    // Setup default mock for useDatasourceIcon
+    mockUseDataSourceList.mockReturnValue({
+      data: [],
+      isSuccess: true,
+    })
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Test Option')).toBeInTheDocument()
+    })
+
+    it('should render label text', () => {
+      // Arrange & Act
+      renderWithProviders(<OptionCard {...defaultProps} label="Custom Label" />)
+
+      // Assert
+      expect(screen.getByText('Custom Label')).toBeInTheDocument()
+    })
+
+    it('should render DatasourceIcon component', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert - DatasourceIcon container should exist
+      const iconContainer = container.querySelector('.size-8')
+      expect(iconContainer).toBeInTheDocument()
+    })
+
+    it('should set title attribute for label truncation', () => {
+      // Arrange
+      const longLabel = 'This is a very long label that might be truncated'
+
+      // Act
+      renderWithProviders(<OptionCard {...defaultProps} label={longLabel} />)
+
+      // Assert
+      const labelElement = screen.getByText(longLabel)
+      expect(labelElement).toHaveAttribute('title', longLabel)
+    })
+  })
+
+  describe('Props', () => {
+    describe('selected', () => {
+      it('should apply selected styles when selected is true', () => {
+        // Arrange & Act
+        const { container } = renderWithProviders(
+          <OptionCard {...defaultProps} selected={true} />,
+        )
+
+        // Assert
+        const card = container.firstChild
+        expect(card).toHaveClass('border-components-option-card-option-selected-border')
+        expect(card).toHaveClass('bg-components-option-card-option-selected-bg')
+      })
+
+      it('should apply unselected styles when selected is false', () => {
+        // Arrange & Act
+        const { container } = renderWithProviders(
+          <OptionCard {...defaultProps} selected={false} />,
+        )
+
+        // Assert
+        const card = container.firstChild
+        expect(card).toHaveClass('border-components-option-card-option-border')
+        expect(card).toHaveClass('bg-components-option-card-option-bg')
+      })
+
+      it('should apply text-text-primary to label when selected', () => {
+        // Arrange & Act
+        renderWithProviders(<OptionCard {...defaultProps} selected={true} />)
+
+        // Assert
+        const label = screen.getByText('Test Option')
+        expect(label).toHaveClass('text-text-primary')
+      })
+
+      it('should apply text-text-secondary to label when not selected', () => {
+        // Arrange & Act
+        renderWithProviders(<OptionCard {...defaultProps} selected={false} />)
+
+        // Assert
+        const label = screen.getByText('Test Option')
+        expect(label).toHaveClass('text-text-secondary')
+      })
+    })
+
+    describe('onClick', () => {
+      it('should call onClick when card is clicked', () => {
+        // Arrange
+        const mockOnClick = jest.fn()
+        renderWithProviders(
+          <OptionCard {...defaultProps} onClick={mockOnClick} />,
+        )
+
+        // Act - Click on the label text's parent card
+        const labelElement = screen.getByText('Test Option')
+        const card = labelElement.closest('[class*="cursor-pointer"]')
+        expect(card).toBeInTheDocument()
+        fireEvent.click(card!)
+
+        // Assert
+        expect(mockOnClick).toHaveBeenCalledTimes(1)
+      })
+
+      it('should not crash when onClick is not provided', () => {
+        // Arrange & Act
+        renderWithProviders(
+          <OptionCard {...defaultProps} onClick={undefined} />,
+        )
+
+        // Act - Click on the label text's parent card should not throw
+        const labelElement = screen.getByText('Test Option')
+        const card = labelElement.closest('[class*="cursor-pointer"]')
+        expect(card).toBeInTheDocument()
+        fireEvent.click(card!)
+
+        // Assert - Component should still be rendered
+        expect(screen.getByText('Test Option')).toBeInTheDocument()
+      })
+    })
+
+    describe('nodeData', () => {
+      it('should pass nodeData to useDatasourceIcon hook', () => {
+        // Arrange
+        const customNodeData = createMockDataSourceNodeData({ plugin_id: 'custom-plugin' })
+
+        // Act
+        renderWithProviders(<OptionCard {...defaultProps} nodeData={customNodeData} />)
+
+        // Assert - Hook should be called (via useDataSourceList mock)
+        expect(mockUseDataSourceList).toHaveBeenCalled()
+      })
+    })
+  })
+
+  describe('Styling', () => {
+    it('should have cursor-pointer class', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('cursor-pointer')
+    })
+
+    it('should have flex layout classes', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('flex')
+      expect(container.firstChild).toHaveClass('items-center')
+      expect(container.firstChild).toHaveClass('gap-2')
+    })
+
+    it('should have rounded-xl border', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('rounded-xl')
+      expect(container.firstChild).toHaveClass('border')
+    })
+
+    it('should have padding p-3', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('p-3')
+    })
+
+    it('should have line-clamp-2 for label truncation', () => {
+      // Arrange & Act
+      renderWithProviders(<OptionCard {...defaultProps} />)
+
+      // Assert
+      const label = screen.getByText('Test Option')
+      expect(label).toHaveClass('line-clamp-2')
+    })
+  })
+
+  describe('Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Assert - OptionCard should be a memoized component
+      expect(OptionCard).toBeDefined()
+      // React.memo wraps the component, so we check it renders correctly
+      const { container } = renderWithProviders(<OptionCard {...defaultProps} />)
+      expect(container.firstChild).toBeInTheDocument()
+    })
+  })
+})
+
+// ==========================================
+// DataSourceOptions Tests
+// ==========================================
+describe('DataSourceOptions', () => {
+  const defaultNodes = createMockPipelineNodes(3)
+  const defaultOptions = defaultNodes.map(createMockDatasourceOption)
+
+  const defaultProps = {
+    pipelineNodes: defaultNodes,
+    datasourceNodeId: '',
+    onSelect: jest.fn(),
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    mockUseDatasourceOptions.mockReturnValue(defaultOptions)
+    mockUseDataSourceList.mockReturnValue({
+      data: [],
+      isSuccess: true,
+    })
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+      expect(screen.getByText('Data Source 2')).toBeInTheDocument()
+      expect(screen.getByText('Data Source 3')).toBeInTheDocument()
+    })
+
+    it('should render correct number of option cards', () => {
+      // Arrange & Act
+      renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+      expect(screen.getByText('Data Source 2')).toBeInTheDocument()
+      expect(screen.getByText('Data Source 3')).toBeInTheDocument()
+    })
+
+    it('should render with grid layout', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert
+      const gridContainer = container.firstChild
+      expect(gridContainer).toHaveClass('grid')
+      expect(gridContainer).toHaveClass('w-full')
+      expect(gridContainer).toHaveClass('grid-cols-4')
+      expect(gridContainer).toHaveClass('gap-1')
+    })
+
+    it('should render no option cards when options is empty', () => {
+      // Arrange
+      mockUseDatasourceOptions.mockReturnValue([])
+
+      // Act
+      const { container } = renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert
+      expect(screen.queryByText('Data Source')).not.toBeInTheDocument()
+      // Grid container should still exist
+      expect(container.firstChild).toHaveClass('grid')
+    })
+
+    it('should render single option card when only one option exists', () => {
+      // Arrange
+      const singleOption = [createMockDatasourceOption(defaultNodes[0])]
+      mockUseDatasourceOptions.mockReturnValue(singleOption)
+
+      // Act
+      renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+      expect(screen.queryByText('Data Source 2')).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Tests
+  // ==========================================
+  describe('Props', () => {
+    describe('pipelineNodes', () => {
+      it('should pass pipelineNodes to useDatasourceOptions hook', () => {
+        // Arrange
+        const customNodes = createMockPipelineNodes(2)
+        mockUseDatasourceOptions.mockReturnValue(customNodes.map(createMockDatasourceOption))
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions {...defaultProps} pipelineNodes={customNodes} />,
+        )
+
+        // Assert
+        expect(mockUseDatasourceOptions).toHaveBeenCalledWith(customNodes)
+      })
+
+      it('should handle empty pipelineNodes array', () => {
+        // Arrange
+        mockUseDatasourceOptions.mockReturnValue([])
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions {...defaultProps} pipelineNodes={[]} />,
+        )
+
+        // Assert
+        expect(mockUseDatasourceOptions).toHaveBeenCalledWith([])
+      })
+    })
+
+    describe('datasourceNodeId', () => {
+      it('should mark corresponding option as selected', () => {
+        // Arrange & Act
+        const { container } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-2"
+          />,
+        )
+
+        // Assert - Check for selected styling on second card
+        const cards = container.querySelectorAll('.rounded-xl.border')
+        expect(cards[1]).toHaveClass('border-components-option-card-option-selected-border')
+      })
+
+      it('should show no selection when datasourceNodeId is empty', () => {
+        // Arrange & Act
+        const { container } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId=""
+          />,
+        )
+
+        // Assert - No card should have selected styling
+        const selectedCards = container.querySelectorAll('.border-components-option-card-option-selected-border')
+        expect(selectedCards).toHaveLength(0)
+      })
+
+      it('should show no selection when datasourceNodeId does not match any option', () => {
+        // Arrange & Act
+        const { container } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="non-existent-node"
+          />,
+        )
+
+        // Assert
+        const selectedCards = container.querySelectorAll('.border-components-option-card-option-selected-border')
+        expect(selectedCards).toHaveLength(0)
+      })
+
+      it('should update selection when datasourceNodeId changes', () => {
+        // Arrange
+        const { container, rerender } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+          />,
+        )
+
+        // Assert initial selection
+        let cards = container.querySelectorAll('.rounded-xl.border')
+        expect(cards[0]).toHaveClass('border-components-option-card-option-selected-border')
+
+        // Act - Change selection
+        rerender(
+          <QueryClientProvider client={createQueryClient()}>
+            <DataSourceOptions
+              {...defaultProps}
+              datasourceNodeId="node-2"
+            />
+          </QueryClientProvider>,
+        )
+
+        // Assert new selection
+        cards = container.querySelectorAll('.rounded-xl.border')
+        expect(cards[0]).not.toHaveClass('border-components-option-card-option-selected-border')
+        expect(cards[1]).toHaveClass('border-components-option-card-option-selected-border')
+      })
+    })
+
+    describe('onSelect', () => {
+      it('should receive onSelect callback', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert - Component renders without error
+        expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup Tests
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    describe('useEffect - Auto-select first option', () => {
+      it('should auto-select first option when options exist and no datasourceNodeId', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId=""
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert - Should auto-select first option on mount
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+        expect(mockOnSelect).toHaveBeenCalledWith({
+          nodeId: 'node-1',
+          nodeData: defaultOptions[0].data,
+        } satisfies Datasource)
+      })
+
+      it('should NOT auto-select when datasourceNodeId is provided', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-2"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert - Should not auto-select because datasourceNodeId is provided
+        expect(mockOnSelect).not.toHaveBeenCalled()
+      })
+
+      it('should NOT auto-select when options array is empty', () => {
+        // Arrange
+        mockUseDatasourceOptions.mockReturnValue([])
+        const mockOnSelect = jest.fn()
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            pipelineNodes={[]}
+            datasourceNodeId=""
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert
+        expect(mockOnSelect).not.toHaveBeenCalled()
+      })
+
+      it('should only run useEffect once on initial mount', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        const { rerender } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId=""
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert - Called once on mount
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+
+        // Act - Rerender with same props
+        rerender(
+          <QueryClientProvider client={createQueryClient()}>
+            <DataSourceOptions
+              {...defaultProps}
+              datasourceNodeId=""
+              onSelect={mockOnSelect}
+            />
+          </QueryClientProvider>,
+        )
+
+        // Assert - Still called only once (useEffect has empty dependency array)
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+      })
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization Tests
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should maintain callback reference stability across renders with same props', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+
+      const { rerender } = renderWithProviders(
+        <DataSourceOptions
+          {...defaultProps}
+          onSelect={mockOnSelect}
+        />,
+      )
+
+      // Get initial click handlers
+      expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+
+      // Trigger clicks to test handlers work
+      fireEvent.click(screen.getByText('Data Source 1'))
+      expect(mockOnSelect).toHaveBeenCalledTimes(2) // 1 auto-select + 1 click
+
+      // Act - Rerender with same onSelect reference
+      rerender(
+        <QueryClientProvider client={createQueryClient()}>
+          <DataSourceOptions
+            {...defaultProps}
+            onSelect={mockOnSelect}
+          />
+        </QueryClientProvider>,
+      )
+
+      // Assert - Component still works after rerender
+      fireEvent.click(screen.getByText('Data Source 2'))
+      expect(mockOnSelect).toHaveBeenCalledTimes(3)
+    })
+
+    it('should update callback when onSelect changes', () => {
+      // Arrange
+      const mockOnSelect1 = jest.fn()
+      const mockOnSelect2 = jest.fn()
+
+      const { rerender } = renderWithProviders(
+        <DataSourceOptions
+          {...defaultProps}
+          datasourceNodeId="node-1"
+          onSelect={mockOnSelect1}
+        />,
+      )
+
+      // Act - Click with first callback
+      fireEvent.click(screen.getByText('Data Source 2'))
+      expect(mockOnSelect1).toHaveBeenCalledTimes(1)
+
+      // Act - Change callback
+      rerender(
+        <QueryClientProvider client={createQueryClient()}>
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect2}
+          />
+        </QueryClientProvider>,
+      )
+
+      // Act - Click with new callback
+      fireEvent.click(screen.getByText('Data Source 3'))
+
+      // Assert - New callback should be called
+      expect(mockOnSelect2).toHaveBeenCalledTimes(1)
+      expect(mockOnSelect2).toHaveBeenCalledWith({
+        nodeId: 'node-3',
+        nodeData: defaultOptions[2].data,
+      })
+    })
+
+    it('should update callback when options change', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+
+      const { rerender } = renderWithProviders(
+        <DataSourceOptions
+          {...defaultProps}
+          datasourceNodeId="node-1"
+          onSelect={mockOnSelect}
+        />,
+      )
+
+      // Act - Click first option
+      fireEvent.click(screen.getByText('Data Source 1'))
+      expect(mockOnSelect).toHaveBeenCalledWith({
+        nodeId: 'node-1',
+        nodeData: defaultOptions[0].data,
+      })
+
+      // Act - Change options
+      const newNodes = createMockPipelineNodes(2)
+      const newOptions = newNodes.map(node => createMockDatasourceOption(node))
+      mockUseDatasourceOptions.mockReturnValue(newOptions)
+
+      rerender(
+        <QueryClientProvider client={createQueryClient()}>
+          <DataSourceOptions
+            pipelineNodes={newNodes}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />
+        </QueryClientProvider>,
+      )
+
+      // Act - Click updated first option
+      fireEvent.click(screen.getByText('Data Source 1'))
+
+      // Assert - Callback receives new option data
+      expect(mockOnSelect).toHaveBeenLastCalledWith({
+        nodeId: newOptions[0].value,
+        nodeData: newOptions[0].data,
+      })
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers Tests
+  // ==========================================
+  describe('User Interactions and Event Handlers', () => {
+    describe('Option Selection', () => {
+      it('should call onSelect with correct datasource when clicking an option', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Act - Click second option
+        fireEvent.click(screen.getByText('Data Source 2'))
+
+        // Assert
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+        expect(mockOnSelect).toHaveBeenCalledWith({
+          nodeId: 'node-2',
+          nodeData: defaultOptions[1].data,
+        } satisfies Datasource)
+      })
+
+      it('should allow selecting already selected option', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Act - Click already selected option
+        fireEvent.click(screen.getByText('Data Source 1'))
+
+        // Assert
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+        expect(mockOnSelect).toHaveBeenCalledWith({
+          nodeId: 'node-1',
+          nodeData: defaultOptions[0].data,
+        })
+      })
+
+      it('should allow multiple sequential selections', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Act - Click options sequentially
+        fireEvent.click(screen.getByText('Data Source 1'))
+        fireEvent.click(screen.getByText('Data Source 2'))
+        fireEvent.click(screen.getByText('Data Source 3'))
+
+        // Assert
+        expect(mockOnSelect).toHaveBeenCalledTimes(3)
+        expect(mockOnSelect).toHaveBeenNthCalledWith(1, {
+          nodeId: 'node-1',
+          nodeData: defaultOptions[0].data,
+        })
+        expect(mockOnSelect).toHaveBeenNthCalledWith(2, {
+          nodeId: 'node-2',
+          nodeData: defaultOptions[1].data,
+        })
+        expect(mockOnSelect).toHaveBeenNthCalledWith(3, {
+          nodeId: 'node-3',
+          nodeData: defaultOptions[2].data,
+        })
+      })
+    })
+
+    describe('handelSelect Internal Logic', () => {
+      it('should handle rapid successive clicks', async () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Act - Rapid clicks
+        await act(async () => {
+          fireEvent.click(screen.getByText('Data Source 1'))
+          fireEvent.click(screen.getByText('Data Source 2'))
+          fireEvent.click(screen.getByText('Data Source 3'))
+          fireEvent.click(screen.getByText('Data Source 1'))
+          fireEvent.click(screen.getByText('Data Source 2'))
+        })
+
+        // Assert - All clicks should be registered
+        expect(mockOnSelect).toHaveBeenCalledTimes(5)
+      })
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling Tests
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    describe('Empty States', () => {
+      it('should handle empty options array gracefully', () => {
+        // Arrange
+        mockUseDatasourceOptions.mockReturnValue([])
+
+        // Act
+        const { container } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            pipelineNodes={[]}
+          />,
+        )
+
+        // Assert
+        expect(container.firstChild).toBeInTheDocument()
+      })
+
+      it('should not crash when datasourceNodeId is undefined', () => {
+        // Arrange & Act
+        renderWithProviders(
+          <DataSourceOptions
+            pipelineNodes={defaultNodes}
+            datasourceNodeId={undefined as unknown as string}
+            onSelect={jest.fn()}
+          />,
+        )
+
+        // Assert
+        expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+      })
+    })
+
+    describe('Null/Undefined Values', () => {
+      it('should handle option with missing data properties', () => {
+        // Arrange
+        const optionWithMinimalData = [{
+          label: 'Minimal Option',
+          value: 'minimal-1',
+          data: {
+            title: 'Minimal',
+            desc: '',
+            type: BlockEnum.DataSource,
+            plugin_id: '',
+            provider_type: '',
+            provider_name: '',
+            datasource_name: '',
+            datasource_label: '',
+            datasource_parameters: {},
+            datasource_configurations: {},
+          } as DataSourceNodeType,
+        }]
+        mockUseDatasourceOptions.mockReturnValue(optionWithMinimalData)
+
+        // Act
+        renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+        // Assert
+        expect(screen.getByText('Minimal Option')).toBeInTheDocument()
+      })
+    })
+
+    describe('Large Data Sets', () => {
+      it('should handle large number of options', () => {
+        // Arrange
+        const manyNodes = createMockPipelineNodes(50)
+        const manyOptions = manyNodes.map(createMockDatasourceOption)
+        mockUseDatasourceOptions.mockReturnValue(manyOptions)
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            pipelineNodes={manyNodes}
+          />,
+        )
+
+        // Assert
+        expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+        expect(screen.getByText('Data Source 50')).toBeInTheDocument()
+      })
+    })
+
+    describe('Special Characters in Data', () => {
+      it('should handle special characters in option labels', () => {
+        // Arrange
+        const specialNode = createMockPipelineNode({
+          id: 'special-node',
+          data: createMockDataSourceNodeData({
+            title: 'Data Source <script>alert("xss")</script>',
+          }),
+        })
+        const specialOptions = [createMockDatasourceOption(specialNode)]
+        mockUseDatasourceOptions.mockReturnValue(specialOptions)
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            pipelineNodes={[specialNode]}
+          />,
+        )
+
+        // Assert - Special characters should be escaped/rendered safely
+        expect(screen.getByText('Data Source <script>alert("xss")</script>')).toBeInTheDocument()
+      })
+
+      it('should handle unicode characters in option labels', () => {
+        // Arrange
+        const unicodeNode = createMockPipelineNode({
+          id: 'unicode-node',
+          data: createMockDataSourceNodeData({
+            title: '数据源 📁 Source émoji',
+          }),
+        })
+        const unicodeOptions = [createMockDatasourceOption(unicodeNode)]
+        mockUseDatasourceOptions.mockReturnValue(unicodeOptions)
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            pipelineNodes={[unicodeNode]}
+          />,
+        )
+
+        // Assert
+        expect(screen.getByText('数据源 📁 Source émoji')).toBeInTheDocument()
+      })
+
+      it('should handle empty string as option value', () => {
+        // Arrange
+        const emptyValueOption = [{
+          label: 'Empty Value Option',
+          value: '',
+          data: createMockDataSourceNodeData(),
+        }]
+        mockUseDatasourceOptions.mockReturnValue(emptyValueOption)
+
+        // Act
+        renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+        // Assert
+        expect(screen.getByText('Empty Value Option')).toBeInTheDocument()
+      })
+    })
+
+    describe('Boundary Conditions', () => {
+      it('should handle single option selection correctly', () => {
+        // Arrange
+        const singleOption = [createMockDatasourceOption(defaultNodes[0])]
+        mockUseDatasourceOptions.mockReturnValue(singleOption)
+        const mockOnSelect = jest.fn()
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert - Click should still work
+        fireEvent.click(screen.getByText('Data Source 1'))
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+      })
+
+      it('should handle options with same labels but different values', () => {
+        // Arrange
+        const duplicateLabelOptions = [
+          {
+            label: 'Duplicate Label',
+            value: 'node-a',
+            data: createMockDataSourceNodeData({ plugin_id: 'plugin-a' }),
+          },
+          {
+            label: 'Duplicate Label',
+            value: 'node-b',
+            data: createMockDataSourceNodeData({ plugin_id: 'plugin-b' }),
+          },
+        ]
+        mockUseDatasourceOptions.mockReturnValue(duplicateLabelOptions)
+        const mockOnSelect = jest.fn()
+
+        // Act
+        renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-a"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Assert - Both should render
+        const labels = screen.getAllByText('Duplicate Label')
+        expect(labels).toHaveLength(2)
+
+        // Click second one
+        fireEvent.click(labels[1])
+        expect(mockOnSelect).toHaveBeenCalledWith({
+          nodeId: 'node-b',
+          nodeData: expect.objectContaining({ plugin_id: 'plugin-b' }),
+        })
+      })
+    })
+
+    describe('Component Unmounting', () => {
+      it('should handle unmounting without errors', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        const { unmount } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Act
+        unmount()
+
+        // Assert - No errors thrown, component cleanly unmounted
+        expect(screen.queryByText('Data Source 1')).not.toBeInTheDocument()
+      })
+
+      it('should handle unmounting during rapid interactions', async () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        const { unmount } = renderWithProviders(
+          <DataSourceOptions
+            {...defaultProps}
+            datasourceNodeId="node-1"
+            onSelect={mockOnSelect}
+          />,
+        )
+
+        // Act - Start interactions then unmount
+        fireEvent.click(screen.getByText('Data Source 1'))
+
+        // Unmount during/after interaction
+        unmount()
+
+        // Assert - Should not throw
+        expect(screen.queryByText('Data Source 1')).not.toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Integration Tests
+  // ==========================================
+  describe('Integration', () => {
+    it('should render OptionCard with correct props', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert - Verify real OptionCard components are rendered
+      const cards = container.querySelectorAll('.rounded-xl.border')
+      expect(cards).toHaveLength(3)
+    })
+
+    it('should correctly pass selected state to OptionCard', () => {
+      // Arrange & Act
+      const { container } = renderWithProviders(
+        <DataSourceOptions
+          {...defaultProps}
+          datasourceNodeId="node-2"
+        />,
+      )
+
+      // Assert
+      const cards = container.querySelectorAll('.rounded-xl.border')
+      expect(cards[0]).not.toHaveClass('border-components-option-card-option-selected-border')
+      expect(cards[1]).toHaveClass('border-components-option-card-option-selected-border')
+      expect(cards[2]).not.toHaveClass('border-components-option-card-option-selected-border')
+    })
+
+    it('should use option.value as key for React rendering', () => {
+      // This test verifies that React doesn't throw duplicate key warnings
+      // Arrange
+      const uniqueValueOptions = createMockPipelineNodes(5).map(createMockDatasourceOption)
+      mockUseDatasourceOptions.mockReturnValue(uniqueValueOptions)
+
+      // Act - Should render without console warnings about duplicate keys
+      const consoleSpy = jest.spyOn(console, 'error').mockImplementation(jest.fn())
+      renderWithProviders(<DataSourceOptions {...defaultProps} />)
+
+      // Assert
+      expect(consoleSpy).not.toHaveBeenCalledWith(
+        expect.stringContaining('key'),
+      )
+      consoleSpy.mockRestore()
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('All Prop Variations', () => {
+    it.each([
+      { datasourceNodeId: '', description: 'empty string' },
+      { datasourceNodeId: 'node-1', description: 'first node' },
+      { datasourceNodeId: 'node-2', description: 'middle node' },
+      { datasourceNodeId: 'node-3', description: 'last node' },
+      { datasourceNodeId: 'non-existent', description: 'non-existent node' },
+    ])('should handle datasourceNodeId as $description', ({ datasourceNodeId }) => {
+      // Arrange & Act
+      renderWithProviders(
+        <DataSourceOptions
+          {...defaultProps}
+          datasourceNodeId={datasourceNodeId}
+        />,
+      )
+
+      // Assert
+      expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+    })
+
+    it.each([
+      { count: 0, description: 'zero options' },
+      { count: 1, description: 'single option' },
+      { count: 3, description: 'few options' },
+      { count: 10, description: 'many options' },
+    ])('should render correctly with $description', ({ count }) => {
+      // Arrange
+      const nodes = createMockPipelineNodes(count)
+      const options = nodes.map(createMockDatasourceOption)
+      mockUseDatasourceOptions.mockReturnValue(options)
+
+      // Act
+      renderWithProviders(
+        <DataSourceOptions
+          pipelineNodes={nodes}
+          datasourceNodeId=""
+          onSelect={jest.fn()}
+        />,
+      )
+
+      // Assert
+      if (count > 0)
+        expect(screen.getByText('Data Source 1')).toBeInTheDocument()
+      else
+        expect(screen.queryByText('Data Source 1')).not.toBeInTheDocument()
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/base/credential-selector/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/base/credential-selector/index.spec.tsx
new file mode 100644
index 0000000000..2e370c5cbc
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/base/credential-selector/index.spec.tsx
@@ -0,0 +1,1056 @@
+import { fireEvent, render, screen, waitFor, within } from '@testing-library/react'
+import React from 'react'
+import CredentialSelector from './index'
+import type { CredentialSelectorProps } from './index'
+import type { DataSourceCredential } from '@/types/pipeline'
+
+// Mock CredentialTypeEnum to avoid deep import chain issues
+enum MockCredentialTypeEnum {
+  OAUTH2 = 'oauth2',
+  API_KEY = 'api_key',
+}
+
+// Mock plugin-auth module to avoid deep import chain issues
+jest.mock('@/app/components/plugins/plugin-auth', () => ({
+  CredentialTypeEnum: {
+    OAUTH2: 'oauth2',
+    API_KEY: 'api_key',
+  },
+}))
+
+// Mock portal-to-follow-elem - use React state to properly handle open/close
+jest.mock('@/app/components/base/portal-to-follow-elem', () => {
+  const MockPortalToFollowElem = ({ children, open }: any) => {
+    return (
+      <div data-testid="portal-root" data-open={open}>
+        {React.Children.map(children, (child: any) => {
+          if (!child)
+            return null
+          // Pass open state to children via context-like prop cloning
+          return React.cloneElement(child, { __portalOpen: open })
+        })}
+      </div>
+    )
+  }
+
+  const MockPortalToFollowElemTrigger = ({ children, onClick, className, __portalOpen }: any) => (
+    <div data-testid="portal-trigger" onClick={onClick} className={className} data-open={__portalOpen}>
+      {children}
+    </div>
+  )
+
+  const MockPortalToFollowElemContent = ({ children, className, __portalOpen }: any) => {
+    // Match actual behavior: returns null when not open
+    if (!__portalOpen)
+      return null
+    return (
+      <div data-testid="portal-content" className={className}>
+        {children}
+      </div>
+    )
+  }
+
+  return {
+    PortalToFollowElem: MockPortalToFollowElem,
+    PortalToFollowElemTrigger: MockPortalToFollowElemTrigger,
+    PortalToFollowElemContent: MockPortalToFollowElemContent,
+  }
+})
+
+// CredentialIcon - imported directly (not mocked)
+// This is a simple UI component with no external dependencies
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockCredential = (overrides?: Partial<DataSourceCredential>): DataSourceCredential => ({
+  id: 'cred-1',
+  name: 'Test Credential',
+  avatar_url: 'https://example.com/avatar.png',
+  credential: { key: 'value' },
+  is_default: false,
+  type: MockCredentialTypeEnum.OAUTH2 as unknown as DataSourceCredential['type'],
+  ...overrides,
+})
+
+const createMockCredentials = (count: number = 3): DataSourceCredential[] =>
+  Array.from({ length: count }, (_, i) =>
+    createMockCredential({
+      id: `cred-${i + 1}`,
+      name: `Credential ${i + 1}`,
+      avatar_url: `https://example.com/avatar-${i + 1}.png`,
+      is_default: i === 0,
+    }),
+  )
+
+const createDefaultProps = (overrides?: Partial<CredentialSelectorProps>): CredentialSelectorProps => ({
+  currentCredentialId: 'cred-1',
+  onCredentialChange: jest.fn(),
+  credentials: createMockCredentials(),
+  ...overrides,
+})
+
+describe('CredentialSelector', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  // ==========================================
+  // Rendering Tests - Verify component renders correctly
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('portal-root')).toBeInTheDocument()
+      expect(screen.getByTestId('portal-trigger')).toBeInTheDocument()
+    })
+
+    it('should render current credential name in trigger', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+    })
+
+    it('should render credential icon with correct props', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<CredentialSelector {...props} />)
+
+      // Assert - CredentialIcon renders an img when avatarUrl is provided
+      const iconImg = container.querySelector('img')
+      expect(iconImg).toBeInTheDocument()
+      expect(iconImg).toHaveAttribute('src', 'https://example.com/avatar-1.png')
+    })
+
+    it('should render dropdown arrow icon', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<CredentialSelector {...props} />)
+
+      // Assert
+      const svgIcon = container.querySelector('svg')
+      expect(svgIcon).toBeInTheDocument()
+    })
+
+    it('should not render dropdown content initially', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.queryByTestId('portal-content')).not.toBeInTheDocument()
+    })
+
+    it('should render all credentials in dropdown when opened', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      // Act - Click trigger to open dropdown
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Assert - All credentials should be visible (current credential appears in both trigger and list)
+      expect(screen.getByTestId('portal-content')).toBeInTheDocument()
+      // 3 in dropdown list + 1 in trigger (current) = 4 total
+      expect(screen.getAllByText(/Credential \d/)).toHaveLength(4)
+    })
+  })
+
+  // ==========================================
+  // Props Testing - Verify all prop variations
+  // ==========================================
+  describe('Props', () => {
+    describe('currentCredentialId prop', () => {
+      it('should display first credential when currentCredentialId matches first', () => {
+        // Arrange
+        const props = createDefaultProps({ currentCredentialId: 'cred-1' })
+
+        // Act
+        render(<CredentialSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('Credential 1')).toBeInTheDocument()
+      })
+
+      it('should display second credential when currentCredentialId matches second', () => {
+        // Arrange
+        const props = createDefaultProps({ currentCredentialId: 'cred-2' })
+
+        // Act
+        render(<CredentialSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('Credential 2')).toBeInTheDocument()
+      })
+
+      it('should display third credential when currentCredentialId matches third', () => {
+        // Arrange
+        const props = createDefaultProps({ currentCredentialId: 'cred-3' })
+
+        // Act
+        render(<CredentialSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('Credential 3')).toBeInTheDocument()
+      })
+
+      it.each([
+        ['cred-1', 'Credential 1'],
+        ['cred-2', 'Credential 2'],
+        ['cred-3', 'Credential 3'],
+      ])('should display %s credential name when currentCredentialId is %s', (credId, expectedName) => {
+        // Arrange
+        const props = createDefaultProps({ currentCredentialId: credId })
+
+        // Act
+        render(<CredentialSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText(expectedName)).toBeInTheDocument()
+      })
+    })
+
+    describe('credentials prop', () => {
+      it('should render single credential correctly', () => {
+        // Arrange
+        const props = createDefaultProps({
+          credentials: [createMockCredential()],
+          currentCredentialId: 'cred-1',
+        })
+
+        // Act
+        render(<CredentialSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('Test Credential')).toBeInTheDocument()
+      })
+
+      it('should render multiple credentials in dropdown', () => {
+        // Arrange
+        const props = createDefaultProps({
+          credentials: createMockCredentials(5),
+          currentCredentialId: 'cred-1',
+        })
+        render(<CredentialSelector {...props} />)
+
+        // Act
+        const trigger = screen.getByTestId('portal-trigger')
+        fireEvent.click(trigger)
+
+        // Assert - 5 in dropdown + 1 in trigger (current credential appears twice)
+        expect(screen.getAllByText(/Credential \d/).length).toBe(6)
+      })
+
+      it('should handle credentials with special characters in name', () => {
+        // Arrange
+        const props = createDefaultProps({
+          credentials: [createMockCredential({ id: 'cred-special', name: 'Test & Credential <special>' })],
+          currentCredentialId: 'cred-special',
+        })
+
+        // Act
+        render(<CredentialSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('Test & Credential <special>')).toBeInTheDocument()
+      })
+    })
+
+    describe('onCredentialChange prop', () => {
+      it('should be called when selecting a credential', () => {
+        // Arrange
+        const mockOnChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnChange })
+        render(<CredentialSelector {...props} />)
+
+        // Act - Open dropdown
+        const trigger = screen.getByTestId('portal-trigger')
+        fireEvent.click(trigger)
+
+        // Click on second credential
+        const credential2 = screen.getByText('Credential 2')
+        fireEvent.click(credential2)
+
+        // Assert
+        expect(mockOnChange).toHaveBeenCalledWith('cred-2')
+      })
+
+      it.each([
+        ['cred-2', 'Credential 2'],
+        ['cred-3', 'Credential 3'],
+      ])('should call onCredentialChange with %s when selecting %s', (credId, credentialName) => {
+        // Arrange
+        const mockOnChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnChange })
+        render(<CredentialSelector {...props} />)
+
+        // Act - Open dropdown and select credential
+        const trigger = screen.getByTestId('portal-trigger')
+        fireEvent.click(trigger)
+
+        // Get the dropdown item using within() to scope query to portal content
+        const portalContent = screen.getByTestId('portal-content')
+        const credentialOption = within(portalContent).getByText(credentialName)
+        fireEvent.click(credentialOption)
+
+        // Assert
+        expect(mockOnChange).toHaveBeenCalledWith(credId)
+      })
+
+      it('should call onCredentialChange with cred-1 when selecting Credential 1 in dropdown', () => {
+        // Arrange - Start with cred-2 selected so cred-1 is only in dropdown
+        const mockOnChange = jest.fn()
+        const props = createDefaultProps({
+          onCredentialChange: mockOnChange,
+          currentCredentialId: 'cred-2',
+        })
+        render(<CredentialSelector {...props} />)
+
+        // Act - Open dropdown and select Credential 1
+        const trigger = screen.getByTestId('portal-trigger')
+        fireEvent.click(trigger)
+
+        const credential1 = screen.getByText('Credential 1')
+        fireEvent.click(credential1)
+
+        // Assert
+        expect(mockOnChange).toHaveBeenCalledWith('cred-1')
+      })
+    })
+  })
+
+  // ==========================================
+  // User Interactions - Test event handlers
+  // ==========================================
+  describe('User Interactions', () => {
+    it('should toggle dropdown open when trigger is clicked', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Initially closed
+      expect(screen.queryByTestId('portal-content')).not.toBeInTheDocument()
+
+      // Act - Click trigger
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Assert - Now open
+      expect(screen.getByTestId('portal-content')).toBeInTheDocument()
+    })
+
+    it('should call onCredentialChange when clicking a credential item', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      render(<CredentialSelector {...props} />)
+
+      // Act
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+      const credential2 = screen.getByText('Credential 2')
+      fireEvent.click(credential2)
+
+      // Assert
+      expect(mockOnChange).toHaveBeenCalledTimes(1)
+      expect(mockOnChange).toHaveBeenCalledWith('cred-2')
+    })
+
+    it('should close dropdown after selecting a credential', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      render(<CredentialSelector {...props} />)
+
+      // Act - Open and select
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      expect(screen.getByTestId('portal-content')).toBeInTheDocument()
+
+      const credential2 = screen.getByText('Credential 2')
+      fireEvent.click(credential2)
+
+      // Assert - The handleCredentialChange calls toggle(), which should change the open state
+      expect(mockOnChange).toHaveBeenCalled()
+    })
+
+    it('should handle rapid consecutive clicks on trigger', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      // Act - Rapid clicks
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+      fireEvent.click(trigger)
+      fireEvent.click(trigger)
+
+      // Assert - Should not crash
+      expect(trigger).toBeInTheDocument()
+    })
+
+    it('should allow selecting credentials multiple times', () => {
+      // Arrange - Start with cred-2 selected so we can select other credentials
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({
+        onCredentialChange: mockOnChange,
+        currentCredentialId: 'cred-2',
+      })
+
+      render(<CredentialSelector {...props} />)
+
+      // Act & Assert - Select Credential 1 (different from current)
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      const credential1 = screen.getByText('Credential 1')
+      fireEvent.click(credential1)
+
+      expect(mockOnChange).toHaveBeenCalledWith('cred-1')
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup - Test useEffect behavior
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    it('should auto-select first credential when currentCredential is not found and credentials exist', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({
+        currentCredentialId: 'non-existent-id',
+        onCredentialChange: mockOnChange,
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should auto-select first credential
+      expect(mockOnChange).toHaveBeenCalledWith('cred-1')
+    })
+
+    it('should not call onCredentialChange when currentCredential is found', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({
+        currentCredentialId: 'cred-2',
+        onCredentialChange: mockOnChange,
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should not auto-select
+      expect(mockOnChange).not.toHaveBeenCalled()
+    })
+
+    it('should not call onCredentialChange when credentials array is empty', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({
+        currentCredentialId: 'cred-1',
+        credentials: [],
+        onCredentialChange: mockOnChange,
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should not call since no credentials to select
+      expect(mockOnChange).not.toHaveBeenCalled()
+    })
+
+    it('should auto-select when credentials change and currentCredential becomes invalid', async () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const initialCredentials = createMockCredentials(3)
+      const props = createDefaultProps({
+        currentCredentialId: 'cred-1',
+        credentials: initialCredentials,
+        onCredentialChange: mockOnChange,
+      })
+
+      const { rerender } = render(<CredentialSelector {...props} />)
+      expect(mockOnChange).not.toHaveBeenCalled()
+
+      // Act - Change credentials to not include current
+      const newCredentials = [
+        createMockCredential({ id: 'cred-4', name: 'New Credential 4' }),
+        createMockCredential({ id: 'cred-5', name: 'New Credential 5' }),
+      ]
+      rerender(
+        <CredentialSelector
+          {...props}
+          credentials={newCredentials}
+        />,
+      )
+
+      // Assert - Should auto-select first of new credentials
+      await waitFor(() => {
+        expect(mockOnChange).toHaveBeenCalledWith('cred-4')
+      })
+    })
+
+    it('should not trigger auto-select effect on every render with same props', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+
+      // Act - Render and rerender with same props
+      const { rerender } = render(<CredentialSelector {...props} />)
+      rerender(<CredentialSelector {...props} />)
+      rerender(<CredentialSelector {...props} />)
+
+      // Assert - onCredentialChange should not be called for auto-selection
+      expect(mockOnChange).not.toHaveBeenCalled()
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization - Test useCallback behavior
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should have stable handleCredentialChange callback', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      render(<CredentialSelector {...props} />)
+
+      // Act - Open dropdown and select
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+      const credential = screen.getByText('Credential 2')
+      fireEvent.click(credential)
+
+      // Assert - Callback should work correctly
+      expect(mockOnChange).toHaveBeenCalledWith('cred-2')
+    })
+
+    it('should update handleCredentialChange when onCredentialChange changes', () => {
+      // Arrange
+      const mockOnChange1 = jest.fn()
+      const mockOnChange2 = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange1 })
+
+      const { rerender } = render(<CredentialSelector {...props} />)
+
+      // Act - Update onCredentialChange prop
+      rerender(<CredentialSelector {...props} onCredentialChange={mockOnChange2} />)
+
+      // Open and select
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+      const credential = screen.getByText('Credential 2')
+      fireEvent.click(credential)
+
+      // Assert - New callback should be used
+      expect(mockOnChange1).not.toHaveBeenCalled()
+      expect(mockOnChange2).toHaveBeenCalledWith('cred-2')
+    })
+  })
+
+  // ==========================================
+  // Memoization Logic and Dependencies - Test useMemo behavior
+  // ==========================================
+  describe('Memoization Logic and Dependencies', () => {
+    it('should find currentCredential by id', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-2' })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should display credential 2
+      expect(screen.getByText('Credential 2')).toBeInTheDocument()
+    })
+
+    it('should update currentCredential when currentCredentialId changes', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-1' })
+      const { rerender } = render(<CredentialSelector {...props} />)
+
+      // Assert initial
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+
+      // Act - Change currentCredentialId
+      rerender(<CredentialSelector {...props} currentCredentialId="cred-3" />)
+
+      // Assert - Should now display credential 3
+      expect(screen.getByText('Credential 3')).toBeInTheDocument()
+    })
+
+    it('should update currentCredential when credentials array changes', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-1' })
+      const { rerender } = render(<CredentialSelector {...props} />)
+
+      // Assert initial
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+
+      // Act - Change credentials
+      const newCredentials = [
+        createMockCredential({ id: 'cred-1', name: 'Updated Credential 1' }),
+      ]
+      rerender(<CredentialSelector {...props} credentials={newCredentials} />)
+
+      // Assert - Should display updated name
+      expect(screen.getByText('Updated Credential 1')).toBeInTheDocument()
+    })
+
+    it('should return undefined currentCredential when id not found', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({
+        currentCredentialId: 'non-existent',
+        onCredentialChange: mockOnChange,
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should trigger auto-select effect
+      expect(mockOnChange).toHaveBeenCalledWith('cred-1')
+    })
+  })
+
+  // ==========================================
+  // Component Memoization - Test React.memo behavior
+  // ==========================================
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Assert
+      expect(CredentialSelector.$$typeof).toBe(Symbol.for('react.memo'))
+    })
+
+    it('should not re-render when props remain the same', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      const renderSpy = jest.fn()
+
+      const TrackedCredentialSelector: React.FC<CredentialSelectorProps> = (trackedProps) => {
+        renderSpy()
+        return <CredentialSelector {...trackedProps} />
+      }
+      const MemoizedTracked = React.memo(TrackedCredentialSelector)
+
+      // Act
+      const { rerender } = render(<MemoizedTracked {...props} />)
+      rerender(<MemoizedTracked {...props} />)
+
+      // Assert - Should only render once due to same props
+      expect(renderSpy).toHaveBeenCalledTimes(1)
+    })
+
+    it('should re-render when currentCredentialId changes', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-1' })
+      const { rerender } = render(<CredentialSelector {...props} />)
+
+      // Assert initial
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+
+      // Act
+      rerender(<CredentialSelector {...props} currentCredentialId="cred-2" />)
+
+      // Assert
+      expect(screen.getByText('Credential 2')).toBeInTheDocument()
+    })
+
+    it('should re-render when credentials array reference changes', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const { rerender } = render(<CredentialSelector {...props} />)
+
+      // Act - Create new credentials array with different data
+      const newCredentials = [
+        createMockCredential({ id: 'cred-1', name: 'New Name 1' }),
+      ]
+      rerender(<CredentialSelector {...props} credentials={newCredentials} />)
+
+      // Assert
+      expect(screen.getByText('New Name 1')).toBeInTheDocument()
+    })
+
+    it('should re-render when onCredentialChange reference changes', () => {
+      // Arrange
+      const mockOnChange1 = jest.fn()
+      const mockOnChange2 = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange1 })
+      const { rerender } = render(<CredentialSelector {...props} />)
+
+      // Act - Change callback reference
+      rerender(<CredentialSelector {...props} onCredentialChange={mockOnChange2} />)
+
+      // Open and select
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+      const credential = screen.getByText('Credential 2')
+      fireEvent.click(credential)
+
+      // Assert - New callback should be used
+      expect(mockOnChange2).toHaveBeenCalledWith('cred-2')
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle empty credentials array', () => {
+      // Arrange
+      const props = createDefaultProps({
+        credentials: [],
+        currentCredentialId: 'cred-1',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should render without crashing
+      expect(screen.getByTestId('portal-root')).toBeInTheDocument()
+    })
+
+    it('should handle undefined avatar_url in credential', () => {
+      // Arrange
+      const credentialWithoutAvatar = createMockCredential({
+        id: 'cred-no-avatar',
+        name: 'No Avatar Credential',
+        avatar_url: undefined,
+      })
+      const props = createDefaultProps({
+        credentials: [credentialWithoutAvatar],
+        currentCredentialId: 'cred-no-avatar',
+      })
+
+      // Act
+      const { container } = render(<CredentialSelector {...props} />)
+
+      // Assert - Should render without crashing and show first letter fallback
+      expect(screen.getByText('No Avatar Credential')).toBeInTheDocument()
+      // When avatar_url is undefined, CredentialIcon shows first letter instead of img
+      const iconImg = container.querySelector('img')
+      expect(iconImg).not.toBeInTheDocument()
+      // First letter 'N' should be displayed
+      expect(screen.getByText('N')).toBeInTheDocument()
+    })
+
+    it('should handle empty string name in credential', () => {
+      // Arrange
+      const credentialWithEmptyName = createMockCredential({
+        id: 'cred-empty-name',
+        name: '',
+      })
+      const props = createDefaultProps({
+        credentials: [credentialWithEmptyName],
+        currentCredentialId: 'cred-empty-name',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should render without crashing
+      expect(screen.getByTestId('portal-trigger')).toBeInTheDocument()
+    })
+
+    it('should handle very long credential name', () => {
+      // Arrange
+      const longName = 'A'.repeat(200)
+      const credentialWithLongName = createMockCredential({
+        id: 'cred-long-name',
+        name: longName,
+      })
+      const props = createDefaultProps({
+        credentials: [credentialWithLongName],
+        currentCredentialId: 'cred-long-name',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText(longName)).toBeInTheDocument()
+    })
+
+    it('should handle special characters in credential name', () => {
+      // Arrange
+      const specialName = '测试 Credential <script>alert("xss")</script> & "quoted"'
+      const credentialWithSpecialName = createMockCredential({
+        id: 'cred-special',
+        name: specialName,
+      })
+      const props = createDefaultProps({
+        credentials: [credentialWithSpecialName],
+        currentCredentialId: 'cred-special',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText(specialName)).toBeInTheDocument()
+    })
+
+    it('should handle numeric id as string', () => {
+      // Arrange
+      const credentialWithNumericId = createMockCredential({
+        id: '123456',
+        name: 'Numeric ID Credential',
+      })
+      const props = createDefaultProps({
+        credentials: [credentialWithNumericId],
+        currentCredentialId: '123456',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('Numeric ID Credential')).toBeInTheDocument()
+    })
+
+    it('should handle large number of credentials', () => {
+      // Arrange
+      const manyCredentials = createMockCredentials(100)
+      const props = createDefaultProps({
+        credentials: manyCredentials,
+        currentCredentialId: 'cred-50',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('Credential 50')).toBeInTheDocument()
+    })
+
+    it('should handle credential selection with duplicate names', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const duplicateCredentials = [
+        createMockCredential({ id: 'cred-1', name: 'Same Name' }),
+        createMockCredential({ id: 'cred-2', name: 'Same Name' }),
+      ]
+      const props = createDefaultProps({
+        credentials: duplicateCredentials,
+        currentCredentialId: 'cred-1',
+        onCredentialChange: mockOnChange,
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Get all "Same Name" elements
+      // 1 in trigger (current) + 2 in dropdown (both credentials) = 3 total
+      const sameNameElements = screen.getAllByText('Same Name')
+      expect(sameNameElements.length).toBe(3)
+
+      // Click the last dropdown item (cred-2 in dropdown)
+      fireEvent.click(sameNameElements[2])
+
+      // Assert - Should call with the correct id even with duplicate names
+      expect(mockOnChange).toHaveBeenCalledWith('cred-2')
+    })
+
+    it('should not crash when clicking credential after unmount', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      const { unmount } = render(<CredentialSelector {...props} />)
+
+      // Act
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      unmount()
+
+      // Assert - Should not throw
+      expect(() => {
+        // Any cleanup should have happened
+      }).not.toThrow()
+    })
+
+    it('should handle whitespace-only credential name', () => {
+      // Arrange
+      const credentialWithWhitespace = createMockCredential({
+        id: 'cred-whitespace',
+        name: '   ',
+      })
+      const props = createDefaultProps({
+        credentials: [credentialWithWhitespace],
+        currentCredentialId: 'cred-whitespace',
+      })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Should render without crashing
+      expect(screen.getByTestId('portal-trigger')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Styling and CSS Classes
+  // ==========================================
+  describe('Styling', () => {
+    it('should apply overflow-hidden class to trigger', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      const trigger = screen.getByTestId('portal-trigger')
+      expect(trigger).toHaveClass('overflow-hidden')
+    })
+
+    it('should apply grow class to trigger', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert
+      const trigger = screen.getByTestId('portal-trigger')
+      expect(trigger).toHaveClass('grow')
+    })
+
+    it('should apply z-10 class to dropdown content', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      // Act
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Assert
+      const content = screen.getByTestId('portal-content')
+      expect(content).toHaveClass('z-10')
+    })
+  })
+
+  // ==========================================
+  // Integration with Child Components
+  // ==========================================
+  describe('Integration with Child Components', () => {
+    it('should pass currentCredential to Trigger component', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-2' })
+
+      // Act
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Trigger should display the correct credential
+      expect(screen.getByText('Credential 2')).toBeInTheDocument()
+    })
+
+    it('should pass isOpen state to Trigger component', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      // Assert - Initially closed
+      const portalRoot = screen.getByTestId('portal-root')
+      expect(portalRoot).toHaveAttribute('data-open', 'false')
+
+      // Act - Open
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Assert - Now open
+      expect(portalRoot).toHaveAttribute('data-open', 'true')
+    })
+
+    it('should pass credentials to List component', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      // Act
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Assert - All credentials should be rendered in list
+      // 3 in dropdown + 1 in trigger (current credential appears twice) = 4 total
+      const credentialNames = screen.getAllByText(/Credential \d/)
+      expect(credentialNames.length).toBe(4)
+    })
+
+    it('should pass currentCredentialId to List component', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-2' })
+      render(<CredentialSelector {...props} />)
+
+      // Act
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+
+      // Assert - Current credential (Credential 2) appears twice:
+      // once in trigger and once in dropdown list
+      const credential2Elements = screen.getAllByText('Credential 2')
+      expect(credential2Elements.length).toBe(2)
+    })
+
+    it('should pass handleCredentialChange to List component', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      render(<CredentialSelector {...props} />)
+
+      // Act
+      const trigger = screen.getByTestId('portal-trigger')
+      fireEvent.click(trigger)
+      const credential3 = screen.getByText('Credential 3')
+      fireEvent.click(credential3)
+
+      // Assert - handleCredentialChange should propagate the call
+      expect(mockOnChange).toHaveBeenCalledWith('cred-3')
+    })
+  })
+
+  // ==========================================
+  // Portal Configuration
+  // ==========================================
+  describe('Portal Configuration', () => {
+    it('should configure PortalToFollowElem with placement bottom-start', () => {
+      // This test verifies the portal is configured correctly
+      // The actual placement is handled by the mock, but we verify the component renders
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      expect(screen.getByTestId('portal-root')).toBeInTheDocument()
+    })
+
+    it('should configure PortalToFollowElem with offset mainAxis 4', () => {
+      // This test verifies the offset configuration doesn't break rendering
+      const props = createDefaultProps()
+      render(<CredentialSelector {...props} />)
+
+      expect(screen.getByTestId('portal-root')).toBeInTheDocument()
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/base/header.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/base/header.spec.tsx
new file mode 100644
index 0000000000..089f1f2810
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/base/header.spec.tsx
@@ -0,0 +1,659 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import React from 'react'
+import Header from './header'
+import type { DataSourceCredential } from '@/types/pipeline'
+
+// Mock CredentialTypeEnum to avoid deep import chain issues
+enum MockCredentialTypeEnum {
+  OAUTH2 = 'oauth2',
+  API_KEY = 'api_key',
+}
+
+// Mock plugin-auth module to avoid deep import chain issues
+jest.mock('@/app/components/plugins/plugin-auth', () => ({
+  CredentialTypeEnum: {
+    OAUTH2: 'oauth2',
+    API_KEY: 'api_key',
+  },
+}))
+
+// Mock portal-to-follow-elem - required for CredentialSelector
+jest.mock('@/app/components/base/portal-to-follow-elem', () => {
+  const MockPortalToFollowElem = ({ children, open }: any) => {
+    return (
+      <div data-testid="portal-root" data-open={open}>
+        {React.Children.map(children, (child: any) => {
+          if (!child)
+            return null
+          return React.cloneElement(child, { __portalOpen: open })
+        })}
+      </div>
+    )
+  }
+
+  const MockPortalToFollowElemTrigger = ({ children, onClick, className, __portalOpen }: any) => (
+    <div data-testid="portal-trigger" onClick={onClick} className={className} data-open={__portalOpen}>
+      {children}
+    </div>
+  )
+
+  const MockPortalToFollowElemContent = ({ children, className, __portalOpen }: any) => {
+    if (!__portalOpen)
+      return null
+    return (
+      <div data-testid="portal-content" className={className}>
+        {children}
+      </div>
+    )
+  }
+
+  return {
+    PortalToFollowElem: MockPortalToFollowElem,
+    PortalToFollowElemTrigger: MockPortalToFollowElemTrigger,
+    PortalToFollowElemContent: MockPortalToFollowElemContent,
+  }
+})
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockCredential = (overrides?: Partial<DataSourceCredential>): DataSourceCredential => ({
+  id: 'cred-1',
+  name: 'Test Credential',
+  avatar_url: 'https://example.com/avatar.png',
+  credential: { key: 'value' },
+  is_default: false,
+  type: MockCredentialTypeEnum.OAUTH2 as unknown as DataSourceCredential['type'],
+  ...overrides,
+})
+
+const createMockCredentials = (count: number = 3): DataSourceCredential[] =>
+  Array.from({ length: count }, (_, i) =>
+    createMockCredential({
+      id: `cred-${i + 1}`,
+      name: `Credential ${i + 1}`,
+      avatar_url: `https://example.com/avatar-${i + 1}.png`,
+      is_default: i === 0,
+    }),
+  )
+
+type HeaderProps = React.ComponentProps<typeof Header>
+
+const createDefaultProps = (overrides?: Partial<HeaderProps>): HeaderProps => ({
+  docTitle: 'Documentation',
+  docLink: 'https://docs.example.com',
+  pluginName: 'Test Plugin',
+  currentCredentialId: 'cred-1',
+  onCredentialChange: jest.fn(),
+  credentials: createMockCredentials(),
+  ...overrides,
+})
+
+describe('Header', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByText('Documentation')).toBeInTheDocument()
+    })
+
+    it('should render documentation link with correct attributes', () => {
+      // Arrange
+      const props = createDefaultProps({
+        docTitle: 'API Docs',
+        docLink: 'https://api.example.com/docs',
+      })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const link = screen.getByRole('link', { name: /API Docs/i })
+      expect(link).toHaveAttribute('href', 'https://api.example.com/docs')
+      expect(link).toHaveAttribute('target', '_blank')
+      expect(link).toHaveAttribute('rel', 'noopener noreferrer')
+    })
+
+    it('should render document title with title attribute', () => {
+      // Arrange
+      const props = createDefaultProps({ docTitle: 'My Documentation' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const titleSpan = screen.getByText('My Documentation')
+      expect(titleSpan).toHaveAttribute('title', 'My Documentation')
+    })
+
+    it('should render CredentialSelector with correct props', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - CredentialSelector should render current credential name
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+    })
+
+    it('should render configuration button', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should render book icon in documentation link', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - RiBookOpenLine renders as SVG
+      const link = screen.getByRole('link')
+      const svg = link.querySelector('svg')
+      expect(svg).toBeInTheDocument()
+    })
+
+    it('should render divider between credential selector and configuration button', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Header {...props} />)
+
+      // Assert - Divider component should be rendered
+      // Divider typically renders as a div with specific styling
+      const divider = container.querySelector('[class*="divider"]') || container.querySelector('.mx-1.h-3\\.5')
+      expect(divider).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('docTitle prop', () => {
+      it('should display the document title', () => {
+        // Arrange
+        const props = createDefaultProps({ docTitle: 'Getting Started Guide' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByText('Getting Started Guide')).toBeInTheDocument()
+      })
+
+      it.each([
+        'Quick Start',
+        'API Reference',
+        'Configuration Guide',
+        'Plugin Documentation',
+      ])('should display "%s" as document title', (title) => {
+        // Arrange
+        const props = createDefaultProps({ docTitle: title })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByText(title)).toBeInTheDocument()
+      })
+    })
+
+    describe('docLink prop', () => {
+      it('should set correct href on documentation link', () => {
+        // Arrange
+        const props = createDefaultProps({ docLink: 'https://custom.docs.com/guide' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        const link = screen.getByRole('link')
+        expect(link).toHaveAttribute('href', 'https://custom.docs.com/guide')
+      })
+
+      it.each([
+        'https://docs.dify.ai',
+        'https://example.com/api',
+        '/local/docs',
+      ])('should accept "%s" as docLink', (link) => {
+        // Arrange
+        const props = createDefaultProps({ docLink: link })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByRole('link')).toHaveAttribute('href', link)
+      })
+    })
+
+    describe('pluginName prop', () => {
+      it('should pass pluginName to translation function', () => {
+        // Arrange
+        const props = createDefaultProps({ pluginName: 'MyPlugin' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert - The translation mock returns the key with options
+        // Tooltip uses the translated content
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+
+    describe('onClickConfiguration prop', () => {
+      it('should call onClickConfiguration when configuration icon is clicked', () => {
+        // Arrange
+        const mockOnClick = jest.fn()
+        const props = createDefaultProps({ onClickConfiguration: mockOnClick })
+        render(<Header {...props} />)
+
+        // Act - Find the configuration button and click the icon inside
+        // The button contains the RiEqualizer2Line icon with onClick handler
+        const configButton = screen.getByRole('button')
+        const configIcon = configButton.querySelector('svg')
+        expect(configIcon).toBeInTheDocument()
+        fireEvent.click(configIcon!)
+
+        // Assert
+        expect(mockOnClick).toHaveBeenCalledTimes(1)
+      })
+
+      it('should not crash when onClickConfiguration is undefined', () => {
+        // Arrange
+        const props = createDefaultProps({ onClickConfiguration: undefined })
+        render(<Header {...props} />)
+
+        // Act - Find the configuration button and click the icon inside
+        const configButton = screen.getByRole('button')
+        const configIcon = configButton.querySelector('svg')
+        expect(configIcon).toBeInTheDocument()
+        fireEvent.click(configIcon!)
+
+        // Assert - Component should still be rendered (no crash)
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+
+    describe('CredentialSelector props passthrough', () => {
+      it('should pass currentCredentialId to CredentialSelector', () => {
+        // Arrange
+        const props = createDefaultProps({ currentCredentialId: 'cred-2' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert - Should display the second credential
+        expect(screen.getByText('Credential 2')).toBeInTheDocument()
+      })
+
+      it('should pass credentials to CredentialSelector', () => {
+        // Arrange
+        const customCredentials = [
+          createMockCredential({ id: 'custom-1', name: 'Custom Credential' }),
+        ]
+        const props = createDefaultProps({
+          credentials: customCredentials,
+          currentCredentialId: 'custom-1',
+        })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByText('Custom Credential')).toBeInTheDocument()
+      })
+
+      it('should pass onCredentialChange to CredentialSelector', () => {
+        // Arrange
+        const mockOnChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnChange })
+        render(<Header {...props} />)
+
+        // Act - Open dropdown and select a credential
+        // Use getAllByTestId and select the first one (CredentialSelector's trigger)
+        const triggers = screen.getAllByTestId('portal-trigger')
+        fireEvent.click(triggers[0])
+        const credential2 = screen.getByText('Credential 2')
+        fireEvent.click(credential2)
+
+        // Assert
+        expect(mockOnChange).toHaveBeenCalledWith('cred-2')
+      })
+    })
+  })
+
+  // ==========================================
+  // User Interactions
+  // ==========================================
+  describe('User Interactions', () => {
+    it('should open external link in new tab when clicking documentation link', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - Link has target="_blank" for new tab
+      const link = screen.getByRole('link')
+      expect(link).toHaveAttribute('target', '_blank')
+    })
+
+    it('should allow credential selection through CredentialSelector', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnChange })
+      render(<Header {...props} />)
+
+      // Act - Open dropdown (use first trigger which is CredentialSelector's)
+      const triggers = screen.getAllByTestId('portal-trigger')
+      fireEvent.click(triggers[0])
+
+      // Assert - Dropdown should be open
+      expect(screen.getByTestId('portal-content')).toBeInTheDocument()
+    })
+
+    it('should trigger configuration callback when clicking config icon', () => {
+      // Arrange
+      const mockOnConfig = jest.fn()
+      const props = createDefaultProps({ onClickConfiguration: mockOnConfig })
+      const { container } = render(<Header {...props} />)
+
+      // Act
+      const configIcon = container.querySelector('.h-4.w-4')
+      fireEvent.click(configIcon!)
+
+      // Assert
+      expect(mockOnConfig).toHaveBeenCalled()
+    })
+  })
+
+  // ==========================================
+  // Component Memoization
+  // ==========================================
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Assert
+      expect(Header.$$typeof).toBe(Symbol.for('react.memo'))
+    })
+
+    it('should not re-render when props remain the same', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const renderSpy = jest.fn()
+
+      const TrackedHeader: React.FC<HeaderProps> = (trackedProps) => {
+        renderSpy()
+        return <Header {...trackedProps} />
+      }
+      const MemoizedTracked = React.memo(TrackedHeader)
+
+      // Act
+      const { rerender } = render(<MemoizedTracked {...props} />)
+      rerender(<MemoizedTracked {...props} />)
+
+      // Assert - Should only render once due to same props
+      expect(renderSpy).toHaveBeenCalledTimes(1)
+    })
+
+    it('should re-render when docTitle changes', () => {
+      // Arrange
+      const props = createDefaultProps({ docTitle: 'Original Title' })
+      const { rerender } = render(<Header {...props} />)
+
+      // Assert initial
+      expect(screen.getByText('Original Title')).toBeInTheDocument()
+
+      // Act
+      rerender(<Header {...props} docTitle="Updated Title" />)
+
+      // Assert
+      expect(screen.getByText('Updated Title')).toBeInTheDocument()
+    })
+
+    it('should re-render when currentCredentialId changes', () => {
+      // Arrange
+      const props = createDefaultProps({ currentCredentialId: 'cred-1' })
+      const { rerender } = render(<Header {...props} />)
+
+      // Assert initial
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+
+      // Act
+      rerender(<Header {...props} currentCredentialId="cred-2" />)
+
+      // Assert
+      expect(screen.getByText('Credential 2')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Edge Cases
+  // ==========================================
+  describe('Edge Cases', () => {
+    it('should handle empty docTitle', () => {
+      // Arrange
+      const props = createDefaultProps({ docTitle: '' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - Should render without crashing
+      const link = screen.getByRole('link')
+      expect(link).toBeInTheDocument()
+    })
+
+    it('should handle very long docTitle', () => {
+      // Arrange
+      const longTitle = 'A'.repeat(200)
+      const props = createDefaultProps({ docTitle: longTitle })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByText(longTitle)).toBeInTheDocument()
+    })
+
+    it('should handle special characters in docTitle', () => {
+      // Arrange
+      const specialTitle = 'Docs & Guide <v2> "Special"'
+      const props = createDefaultProps({ docTitle: specialTitle })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByText(specialTitle)).toBeInTheDocument()
+    })
+
+    it('should handle empty credentials array', () => {
+      // Arrange
+      const props = createDefaultProps({
+        credentials: [],
+        currentCredentialId: '',
+      })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - Should render without crashing
+      expect(screen.getByRole('link')).toBeInTheDocument()
+    })
+
+    it('should handle special characters in pluginName', () => {
+      // Arrange
+      const props = createDefaultProps({ pluginName: 'Plugin & Tool <v1>' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - Should render without crashing
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should handle unicode characters in docTitle', () => {
+      // Arrange
+      const props = createDefaultProps({ docTitle: '文档说明 📚' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByText('文档说明 📚')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Styling
+  // ==========================================
+  describe('Styling', () => {
+    it('should apply correct classes to container', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Header {...props} />)
+
+      // Assert
+      const rootDiv = container.firstChild as HTMLElement
+      expect(rootDiv).toHaveClass('flex', 'items-center', 'justify-between', 'gap-x-2')
+    })
+
+    it('should apply correct classes to documentation link', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const link = screen.getByRole('link')
+      expect(link).toHaveClass('system-xs-medium', 'text-text-accent')
+    })
+
+    it('should apply shrink-0 to documentation link', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const link = screen.getByRole('link')
+      expect(link).toHaveClass('shrink-0')
+    })
+  })
+
+  // ==========================================
+  // Integration Tests
+  // ==========================================
+  describe('Integration', () => {
+    it('should work with full credential workflow', () => {
+      // Arrange
+      const mockOnCredentialChange = jest.fn()
+      const props = createDefaultProps({
+        onCredentialChange: mockOnCredentialChange,
+        currentCredentialId: 'cred-1',
+      })
+      render(<Header {...props} />)
+
+      // Assert initial state
+      expect(screen.getByText('Credential 1')).toBeInTheDocument()
+
+      // Act - Open dropdown and select different credential
+      // Use first trigger which is CredentialSelector's
+      const triggers = screen.getAllByTestId('portal-trigger')
+      fireEvent.click(triggers[0])
+
+      const credential3 = screen.getByText('Credential 3')
+      fireEvent.click(credential3)
+
+      // Assert
+      expect(mockOnCredentialChange).toHaveBeenCalledWith('cred-3')
+    })
+
+    it('should display all components together correctly', () => {
+      // Arrange
+      const mockOnConfig = jest.fn()
+      const props = createDefaultProps({
+        docTitle: 'Integration Test Docs',
+        docLink: 'https://test.com/docs',
+        pluginName: 'TestPlugin',
+        onClickConfiguration: mockOnConfig,
+      })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - All main elements present
+      expect(screen.getByText('Credential 1')).toBeInTheDocument() // CredentialSelector
+      expect(screen.getByRole('button')).toBeInTheDocument() // Config button
+      expect(screen.getByText('Integration Test Docs')).toBeInTheDocument() // Doc link
+      expect(screen.getByRole('link')).toHaveAttribute('href', 'https://test.com/docs')
+    })
+  })
+
+  // ==========================================
+  // Accessibility
+  // ==========================================
+  describe('Accessibility', () => {
+    it('should have accessible link', () => {
+      // Arrange
+      const props = createDefaultProps({ docTitle: 'Accessible Docs' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const link = screen.getByRole('link', { name: /Accessible Docs/i })
+      expect(link).toBeInTheDocument()
+    })
+
+    it('should have accessible button for configuration', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const button = screen.getByRole('button')
+      expect(button).toBeInTheDocument()
+    })
+
+    it('should have noopener noreferrer for security on external links', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const link = screen.getByRole('link')
+      expect(link).toHaveAttribute('rel', 'noopener noreferrer')
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-documents/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-documents/index.spec.tsx
new file mode 100644
index 0000000000..467f6d9816
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-documents/index.spec.tsx
@@ -0,0 +1,1357 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import React from 'react'
+import OnlineDocuments from './index'
+import type { DataSourceNotionWorkspace, NotionPage } from '@/models/common'
+import type { DataSourceNodeType } from '@/app/components/workflow/nodes/data-source/types'
+import { VarKindType } from '@/app/components/workflow/nodes/_base/types'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock useDocLink - context hook requires mocking
+const mockDocLink = jest.fn((path?: string) => `https://docs.example.com${path || ''}`)
+jest.mock('@/context/i18n', () => ({
+  useDocLink: () => mockDocLink,
+}))
+
+// Mock dataset-detail context - context provider requires mocking
+let mockPipelineId = 'pipeline-123'
+jest.mock('@/context/dataset-detail', () => ({
+  useDatasetDetailContextWithSelector: (selector: (s: any) => any) => selector({ dataset: { pipeline_id: mockPipelineId } }),
+}))
+
+// Mock modal context - context provider requires mocking
+const mockSetShowAccountSettingModal = jest.fn()
+jest.mock('@/context/modal-context', () => ({
+  useModalContextSelector: (selector: (s: any) => any) => selector({ setShowAccountSettingModal: mockSetShowAccountSettingModal }),
+}))
+
+// Mock ssePost - API service requires mocking
+const mockSsePost = jest.fn()
+jest.mock('@/service/base', () => ({
+  ssePost: (...args: any[]) => mockSsePost(...args),
+}))
+
+// Mock Toast.notify - static method that manipulates DOM, needs mocking to verify calls
+const mockToastNotify = jest.fn()
+jest.mock('@/app/components/base/toast', () => ({
+  __esModule: true,
+  default: {
+    notify: (options: any) => mockToastNotify(options),
+  },
+}))
+
+// Mock useGetDataSourceAuth - API service hook requires mocking
+const mockUseGetDataSourceAuth = jest.fn()
+jest.mock('@/service/use-datasource', () => ({
+  useGetDataSourceAuth: (params: any) => mockUseGetDataSourceAuth(params),
+}))
+
+// Note: zustand/react/shallow useShallow is imported directly (simple utility function)
+
+// Mock store
+const mockStoreState = {
+  documentsData: [] as DataSourceNotionWorkspace[],
+  searchValue: '',
+  selectedPagesId: new Set<string>(),
+  currentCredentialId: '',
+  setDocumentsData: jest.fn(),
+  setSearchValue: jest.fn(),
+  setSelectedPagesId: jest.fn(),
+  setOnlineDocuments: jest.fn(),
+  setCurrentDocument: jest.fn(),
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../store', () => ({
+  useDataSourceStoreWithSelector: (selector: (s: any) => any) => selector(mockStoreState),
+  useDataSourceStore: () => mockDataSourceStore,
+}))
+
+// Mock Header component
+jest.mock('../base/header', () => {
+  const MockHeader = (props: any) => (
+    <div data-testid="header">
+      <span data-testid="header-doc-title">{props.docTitle}</span>
+      <span data-testid="header-doc-link">{props.docLink}</span>
+      <span data-testid="header-plugin-name">{props.pluginName}</span>
+      <span data-testid="header-credential-id">{props.currentCredentialId}</span>
+      <button data-testid="header-config-btn" onClick={props.onClickConfiguration}>Configure</button>
+      <button data-testid="header-credential-change" onClick={() => props.onCredentialChange('new-cred-id')}>Change Credential</button>
+      <span data-testid="header-credentials-count">{props.credentials?.length || 0}</span>
+    </div>
+  )
+  return MockHeader
+})
+
+// Mock SearchInput component
+jest.mock('@/app/components/base/notion-page-selector/search-input', () => {
+  const MockSearchInput = ({ value, onChange }: { value: string; onChange: (v: string) => void }) => (
+    <div data-testid="search-input">
+      <input
+        data-testid="search-input-field"
+        value={value}
+        onChange={e => onChange(e.target.value)}
+        placeholder="Search"
+      />
+    </div>
+  )
+  return MockSearchInput
+})
+
+// Mock PageSelector component
+jest.mock('./page-selector', () => {
+  const MockPageSelector = (props: any) => (
+    <div data-testid="page-selector">
+      <span data-testid="page-selector-checked-count">{props.checkedIds?.size || 0}</span>
+      <span data-testid="page-selector-search-value">{props.searchValue}</span>
+      <span data-testid="page-selector-can-preview">{String(props.canPreview)}</span>
+      <span data-testid="page-selector-multiple-choice">{String(props.isMultipleChoice)}</span>
+      <span data-testid="page-selector-credential-id">{props.currentCredentialId}</span>
+      <button
+        data-testid="page-selector-select-btn"
+        onClick={() => props.onSelect(new Set(['page-1', 'page-2']))}
+      >
+        Select Pages
+      </button>
+      <button
+        data-testid="page-selector-preview-btn"
+        onClick={() => props.onPreview?.('page-1')}
+      >
+        Preview Page
+      </button>
+    </div>
+  )
+  return MockPageSelector
+})
+
+// Mock Title component
+jest.mock('./title', () => {
+  const MockTitle = ({ name }: { name: string }) => (
+    <div data-testid="title">
+      <span data-testid="title-name">{name}</span>
+    </div>
+  )
+  return MockTitle
+})
+
+// Mock Loading component
+jest.mock('@/app/components/base/loading', () => {
+  const MockLoading = ({ type }: { type: string }) => (
+    <div data-testid="loading" data-type={type}>Loading...</div>
+  )
+  return MockLoading
+})
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockNodeData = (overrides?: Partial<DataSourceNodeType>): DataSourceNodeType => ({
+  title: 'Test Node',
+  plugin_id: 'plugin-123',
+  provider_type: 'notion',
+  provider_name: 'notion-provider',
+  datasource_name: 'notion-ds',
+  datasource_label: 'Notion',
+  datasource_parameters: {},
+  datasource_configurations: {},
+  ...overrides,
+} as DataSourceNodeType)
+
+const createMockPage = (overrides?: Partial<NotionPage>): NotionPage => ({
+  page_id: 'page-1',
+  page_name: 'Test Page',
+  page_icon: null,
+  is_bound: false,
+  parent_id: 'root',
+  type: 'page',
+  workspace_id: 'workspace-1',
+  ...overrides,
+})
+
+const createMockWorkspace = (overrides?: Partial<DataSourceNotionWorkspace>): DataSourceNotionWorkspace => ({
+  workspace_id: 'workspace-1',
+  workspace_name: 'Test Workspace',
+  workspace_icon: null,
+  pages: [createMockPage()],
+  ...overrides,
+})
+
+const createMockCredential = (overrides?: Partial<{ id: string; name: string }>) => ({
+  id: 'cred-1',
+  name: 'Test Credential',
+  avatar_url: 'https://example.com/avatar.png',
+  credential: {},
+  is_default: false,
+  type: 'oauth2',
+  ...overrides,
+})
+
+type OnlineDocumentsProps = React.ComponentProps<typeof OnlineDocuments>
+
+const createDefaultProps = (overrides?: Partial<OnlineDocumentsProps>): OnlineDocumentsProps => ({
+  nodeId: 'node-1',
+  nodeData: createMockNodeData(),
+  onCredentialChange: jest.fn(),
+  isInPipeline: false,
+  supportBatchUpload: true,
+  ...overrides,
+})
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('OnlineDocuments', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+
+    // Reset store state
+    mockStoreState.documentsData = []
+    mockStoreState.searchValue = ''
+    mockStoreState.selectedPagesId = new Set()
+    mockStoreState.currentCredentialId = ''
+    mockStoreState.setDocumentsData = jest.fn()
+    mockStoreState.setSearchValue = jest.fn()
+    mockStoreState.setSelectedPagesId = jest.fn()
+    mockStoreState.setOnlineDocuments = jest.fn()
+    mockStoreState.setCurrentDocument = jest.fn()
+
+    // Reset context values
+    mockPipelineId = 'pipeline-123'
+    mockSetShowAccountSettingModal.mockClear()
+
+    // Default mock return values
+    mockUseGetDataSourceAuth.mockReturnValue({
+      data: { result: [createMockCredential()] },
+    })
+
+    mockGetState.mockReturnValue(mockStoreState)
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header')).toBeInTheDocument()
+    })
+
+    it('should render Header with correct props', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-123'
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ datasource_label: 'My Notion' }),
+      })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-doc-title')).toHaveTextContent('Docs')
+      expect(screen.getByTestId('header-plugin-name')).toHaveTextContent('My Notion')
+      expect(screen.getByTestId('header-credential-id')).toHaveTextContent('cred-123')
+    })
+
+    it('should render Loading when documentsData is empty', () => {
+      // Arrange
+      mockStoreState.documentsData = []
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('loading')).toBeInTheDocument()
+      expect(screen.getByTestId('loading')).toHaveAttribute('data-type', 'app')
+    })
+
+    it('should render PageSelector when documentsData has content', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('page-selector')).toBeInTheDocument()
+      expect(screen.queryByTestId('loading')).not.toBeInTheDocument()
+    })
+
+    it('should render Title with datasource_label', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ datasource_label: 'Notion Integration' }),
+      })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('title-name')).toHaveTextContent('Notion Integration')
+    })
+
+    it('should render SearchInput with current searchValue', () => {
+      // Arrange
+      mockStoreState.searchValue = 'test search'
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      const searchInput = screen.getByTestId('search-input-field') as HTMLInputElement
+      expect(searchInput.value).toBe('test search')
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('nodeId prop', () => {
+      it('should use nodeId in datasourceNodeRunURL for non-pipeline mode', () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({
+          nodeId: 'custom-node-id',
+          isInPipeline: false,
+        })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert - Effect triggers ssePost with correct URL
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.stringContaining('/nodes/custom-node-id/run'),
+          expect.any(Object),
+          expect.any(Object),
+        )
+      })
+    })
+
+    describe('nodeData prop', () => {
+      it('should pass datasource_parameters to ssePost', () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const nodeData = createMockNodeData({
+          datasource_parameters: {
+            param1: { type: VarKindType.constant, value: 'value1' },
+            param2: { type: VarKindType.constant, value: 'value2' },
+          },
+        })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.any(String),
+          expect.objectContaining({
+            body: expect.objectContaining({
+              inputs: { param1: 'value1', param2: 'value2' },
+            }),
+          }),
+          expect.any(Object),
+        )
+      })
+
+      it('should pass plugin_id and provider_name to useGetDataSourceAuth', () => {
+        // Arrange
+        const nodeData = createMockNodeData({
+          plugin_id: 'my-plugin-id',
+          provider_name: 'my-provider',
+        })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(mockUseGetDataSourceAuth).toHaveBeenCalledWith({
+          pluginId: 'my-plugin-id',
+          provider: 'my-provider',
+        })
+      })
+    })
+
+    describe('isInPipeline prop', () => {
+      it('should use draft URL when isInPipeline is true', () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.stringContaining('/workflows/draft/'),
+          expect.any(Object),
+          expect.any(Object),
+        )
+      })
+
+      it('should use published URL when isInPipeline is false', () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({ isInPipeline: false })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.stringContaining('/workflows/published/'),
+          expect.any(Object),
+          expect.any(Object),
+        )
+      })
+
+      it('should pass canPreview as false to PageSelector when isInPipeline is true', () => {
+        // Arrange
+        mockStoreState.documentsData = [createMockWorkspace()]
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('page-selector-can-preview')).toHaveTextContent('false')
+      })
+
+      it('should pass canPreview as true to PageSelector when isInPipeline is false', () => {
+        // Arrange
+        mockStoreState.documentsData = [createMockWorkspace()]
+        const props = createDefaultProps({ isInPipeline: false })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('page-selector-can-preview')).toHaveTextContent('true')
+      })
+    })
+
+    describe('supportBatchUpload prop', () => {
+      it('should pass isMultipleChoice as true to PageSelector when supportBatchUpload is true', () => {
+        // Arrange
+        mockStoreState.documentsData = [createMockWorkspace()]
+        const props = createDefaultProps({ supportBatchUpload: true })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('page-selector-multiple-choice')).toHaveTextContent('true')
+      })
+
+      it('should pass isMultipleChoice as false to PageSelector when supportBatchUpload is false', () => {
+        // Arrange
+        mockStoreState.documentsData = [createMockWorkspace()]
+        const props = createDefaultProps({ supportBatchUpload: false })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('page-selector-multiple-choice')).toHaveTextContent('false')
+      })
+
+      it.each([
+        [true, 'true'],
+        [false, 'false'],
+        [undefined, 'true'], // Default value
+      ])('should handle supportBatchUpload=%s correctly', (value, expected) => {
+        // Arrange
+        mockStoreState.documentsData = [createMockWorkspace()]
+        const props = createDefaultProps({ supportBatchUpload: value })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('page-selector-multiple-choice')).toHaveTextContent(expected)
+      })
+    })
+
+    describe('onCredentialChange prop', () => {
+      it('should pass onCredentialChange to Header', () => {
+        // Arrange
+        const mockOnCredentialChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+
+        // Act
+        render(<OnlineDocuments {...props} />)
+        fireEvent.click(screen.getByTestId('header-credential-change'))
+
+        // Assert
+        expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+      })
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    it('should call getOnlineDocuments when currentCredentialId changes', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).toHaveBeenCalledTimes(1)
+    })
+
+    it('should not call getOnlineDocuments when currentCredentialId is empty', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = ''
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).not.toHaveBeenCalled()
+    })
+
+    it('should pass correct body parameters to ssePost', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-123'
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).toHaveBeenCalledWith(
+        expect.any(String),
+        {
+          body: {
+            inputs: {},
+            credential_id: 'cred-123',
+            datasource_type: 'online_document',
+          },
+        },
+        expect.any(Object),
+      )
+    })
+
+    it('should handle onDataSourceNodeCompleted callback correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockWorkspaces = [createMockWorkspace()]
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        // Simulate successful response
+        callbacks.onDataSourceNodeCompleted({
+          event: 'datasource_completed',
+          data: mockWorkspaces,
+          time_consuming: 1000,
+        })
+      })
+
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setDocumentsData).toHaveBeenCalledWith(mockWorkspaces)
+      })
+    })
+
+    it('should handle onDataSourceNodeError callback correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        // Simulate error response
+        callbacks.onDataSourceNodeError({
+          event: 'datasource_error',
+          error: 'Something went wrong',
+        })
+      })
+
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockToastNotify).toHaveBeenCalledWith({
+          type: 'error',
+          message: 'Something went wrong',
+        })
+      })
+    })
+
+    it('should construct correct URL for draft workflow', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockPipelineId = 'pipeline-456'
+      const props = createDefaultProps({
+        nodeId: 'node-789',
+        isInPipeline: true,
+      })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).toHaveBeenCalledWith(
+        '/rag/pipelines/pipeline-456/workflows/draft/datasource/nodes/node-789/run',
+        expect.any(Object),
+        expect.any(Object),
+      )
+    })
+
+    it('should construct correct URL for published workflow', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockPipelineId = 'pipeline-456'
+      const props = createDefaultProps({
+        nodeId: 'node-789',
+        isInPipeline: false,
+      })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).toHaveBeenCalledWith(
+        '/rag/pipelines/pipeline-456/workflows/published/datasource/nodes/node-789/run',
+        expect.any(Object),
+        expect.any(Object),
+      )
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should have stable handleSearchValueChange that updates store', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      const searchInput = screen.getByTestId('search-input-field')
+      fireEvent.change(searchInput, { target: { value: 'new search value' } })
+
+      // Assert
+      expect(mockStoreState.setSearchValue).toHaveBeenCalledWith('new search value')
+    })
+
+    it('should have stable handleSelectPages that updates store', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('page-selector-select-btn'))
+
+      // Assert
+      expect(mockStoreState.setSelectedPagesId).toHaveBeenCalled()
+      expect(mockStoreState.setOnlineDocuments).toHaveBeenCalled()
+    })
+
+    it('should have stable handlePreviewPage that updates store', () => {
+      // Arrange
+      const mockPages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+      ]
+      mockStoreState.documentsData = [createMockWorkspace({ pages: mockPages })]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('page-selector-preview-btn'))
+
+      // Assert
+      expect(mockStoreState.setCurrentDocument).toHaveBeenCalled()
+    })
+
+    it('should have stable handleSetting callback', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-config-btn'))
+
+      // Assert
+      expect(mockSetShowAccountSettingModal).toHaveBeenCalledWith({
+        payload: 'data-source',
+      })
+    })
+  })
+
+  // ==========================================
+  // Memoization Logic and Dependencies
+  // ==========================================
+  describe('Memoization Logic and Dependencies', () => {
+    it('should compute PagesMapAndSelectedPagesId correctly from documentsData', () => {
+      // Arrange
+      const mockPages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+      ]
+      mockStoreState.documentsData = [
+        createMockWorkspace({ workspace_id: 'ws-1', pages: mockPages }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - PageSelector receives the pagesMap (verified via mock)
+      expect(screen.getByTestId('page-selector')).toBeInTheDocument()
+    })
+
+    it('should recompute PagesMapAndSelectedPagesId when documentsData changes', () => {
+      // Arrange
+      const initialPages = [createMockPage({ page_id: 'page-1' })]
+      mockStoreState.documentsData = [createMockWorkspace({ pages: initialPages })]
+      const props = createDefaultProps()
+      const { rerender } = render(<OnlineDocuments {...props} />)
+
+      // Act - Update documentsData
+      const newPages = [
+        createMockPage({ page_id: 'page-1' }),
+        createMockPage({ page_id: 'page-2' }),
+      ]
+      mockStoreState.documentsData = [createMockWorkspace({ pages: newPages })]
+      rerender(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('page-selector')).toBeInTheDocument()
+    })
+
+    it('should handle empty documentsData in PagesMapAndSelectedPagesId computation', () => {
+      // Arrange
+      mockStoreState.documentsData = []
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - Should show loading instead of PageSelector
+      expect(screen.getByTestId('loading')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions and Event Handlers', () => {
+    it('should handle search input changes', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      const searchInput = screen.getByTestId('search-input-field')
+      fireEvent.change(searchInput, { target: { value: 'search query' } })
+
+      // Assert
+      expect(mockStoreState.setSearchValue).toHaveBeenCalledWith('search query')
+    })
+
+    it('should handle page selection', () => {
+      // Arrange
+      const mockPages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+      ]
+      mockStoreState.documentsData = [createMockWorkspace({ pages: mockPages })]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('page-selector-select-btn'))
+
+      // Assert
+      expect(mockStoreState.setSelectedPagesId).toHaveBeenCalled()
+      expect(mockStoreState.setOnlineDocuments).toHaveBeenCalled()
+    })
+
+    it('should handle page preview', () => {
+      // Arrange
+      const mockPages = [createMockPage({ page_id: 'page-1', page_name: 'Page 1' })]
+      mockStoreState.documentsData = [createMockWorkspace({ pages: mockPages })]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('page-selector-preview-btn'))
+
+      // Assert
+      expect(mockStoreState.setCurrentDocument).toHaveBeenCalled()
+    })
+
+    it('should handle configuration button click', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-config-btn'))
+
+      // Assert
+      expect(mockSetShowAccountSettingModal).toHaveBeenCalledWith({
+        payload: 'data-source',
+      })
+    })
+
+    it('should handle credential change', () => {
+      // Arrange
+      const mockOnCredentialChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-credential-change'))
+
+      // Assert
+      expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+    })
+  })
+
+  // ==========================================
+  // API Calls Mocking
+  // ==========================================
+  describe('API Calls', () => {
+    it('should call ssePost with correct parameters', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'test-cred'
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({
+          datasource_parameters: {
+            workspace: { type: VarKindType.constant, value: 'ws-123' },
+            database: { type: VarKindType.constant, value: 'db-456' },
+          },
+        }),
+      })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).toHaveBeenCalledWith(
+        expect.any(String),
+        {
+          body: {
+            inputs: { workspace: 'ws-123', database: 'db-456' },
+            credential_id: 'test-cred',
+            datasource_type: 'online_document',
+          },
+        },
+        expect.objectContaining({
+          onDataSourceNodeCompleted: expect.any(Function),
+          onDataSourceNodeError: expect.any(Function),
+        }),
+      )
+    })
+
+    it('should handle successful API response', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockData = [createMockWorkspace()]
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          event: 'datasource_completed',
+          data: mockData,
+          time_consuming: 500,
+        })
+      })
+
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setDocumentsData).toHaveBeenCalledWith(mockData)
+      })
+    })
+
+    it('should handle API error response', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          event: 'datasource_error',
+          error: 'API Error Message',
+        })
+      })
+
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockToastNotify).toHaveBeenCalledWith({
+          type: 'error',
+          message: 'API Error Message',
+        })
+      })
+    })
+
+    it('should use useGetDataSourceAuth with correct parameters', () => {
+      // Arrange
+      const nodeData = createMockNodeData({
+        plugin_id: 'notion-plugin',
+        provider_name: 'notion-provider',
+      })
+      const props = createDefaultProps({ nodeData })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockUseGetDataSourceAuth).toHaveBeenCalledWith({
+        pluginId: 'notion-plugin',
+        provider: 'notion-provider',
+      })
+    })
+
+    it('should pass credentials from useGetDataSourceAuth to Header', () => {
+      // Arrange
+      const mockCredentials = [
+        createMockCredential({ id: 'cred-1', name: 'Credential 1' }),
+        createMockCredential({ id: 'cred-2', name: 'Credential 2' }),
+      ]
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: mockCredentials },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('2')
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle empty credentials array', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: [] },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined dataSourceAuth result', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: undefined },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle null dataSourceAuth data', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: null,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle documentsData with empty pages array', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace({ pages: [] })]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('page-selector')).toBeInTheDocument()
+    })
+
+    it('should handle undefined documentsData in useMemo (line 59 branch)', () => {
+      // Arrange - Set documentsData to undefined to test the || [] fallback
+      mockStoreState.documentsData = undefined as unknown as DataSourceNotionWorkspace[]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - Should show loading when documentsData is undefined
+      expect(screen.getByTestId('loading')).toBeInTheDocument()
+    })
+
+    it('should handle undefined datasource_parameters (line 79 branch)', () => {
+      // Arrange - Set datasource_parameters to undefined to test the || {} fallback
+      mockStoreState.currentCredentialId = 'cred-1'
+      const nodeData = createMockNodeData()
+      // @ts-expect-error - Testing undefined case for branch coverage
+      nodeData.datasource_parameters = undefined
+      const props = createDefaultProps({ nodeData })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - ssePost should be called with empty inputs
+      expect(mockSsePost).toHaveBeenCalledWith(
+        expect.any(String),
+        expect.objectContaining({
+          body: expect.objectContaining({
+            inputs: {},
+          }),
+        }),
+        expect.any(Object),
+      )
+    })
+
+    it('should handle datasource_parameters value without value property (line 80 else branch)', () => {
+      // Arrange - Test the else branch where value is not an object with 'value' property
+      // This tests: typeof value === 'object' && value !== null && 'value' in value ? value.value : value
+      // The else branch (: value) is executed when value is a primitive or object without 'value' key
+      mockStoreState.currentCredentialId = 'cred-1'
+      const nodeData = createMockNodeData({
+        datasource_parameters: {
+          // Object without 'value' key - should use the object itself
+          objWithoutValue: { type: VarKindType.constant, other: 'data' } as any,
+        },
+      })
+      const props = createDefaultProps({ nodeData })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - The object without 'value' property should be passed as-is
+      expect(mockSsePost).toHaveBeenCalledWith(
+        expect.any(String),
+        expect.objectContaining({
+          body: expect.objectContaining({
+            inputs: expect.objectContaining({
+              objWithoutValue: expect.objectContaining({ type: VarKindType.constant, other: 'data' }),
+            }),
+          }),
+        }),
+        expect.any(Object),
+      )
+    })
+
+    it('should handle multiple workspaces in documentsData', () => {
+      // Arrange
+      mockStoreState.documentsData = [
+        createMockWorkspace({ workspace_id: 'ws-1', pages: [createMockPage({ page_id: 'page-1' })] }),
+        createMockWorkspace({ workspace_id: 'ws-2', pages: [createMockPage({ page_id: 'page-2' })] }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('page-selector')).toBeInTheDocument()
+    })
+
+    it('should handle special characters in searchValue', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      const searchInput = screen.getByTestId('search-input-field')
+      fireEvent.change(searchInput, { target: { value: 'test<script>alert("xss")</script>' } })
+
+      // Assert
+      expect(mockStoreState.setSearchValue).toHaveBeenCalledWith('test<script>alert("xss")</script>')
+    })
+
+    it('should handle unicode characters in searchValue', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Act
+      const searchInput = screen.getByTestId('search-input-field')
+      fireEvent.change(searchInput, { target: { value: '测试搜索 🔍' } })
+
+      // Assert
+      expect(mockStoreState.setSearchValue).toHaveBeenCalledWith('测试搜索 🔍')
+    })
+
+    it('should handle empty string currentCredentialId', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = ''
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).not.toHaveBeenCalled()
+    })
+
+    it('should handle complex datasource_parameters with nested objects', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const nodeData = createMockNodeData({
+        datasource_parameters: {
+          simple: { type: VarKindType.constant, value: 'value' },
+          nested: { type: VarKindType.constant, value: 'nested-value' },
+        },
+      })
+      const props = createDefaultProps({ nodeData })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(mockSsePost).toHaveBeenCalledWith(
+        expect.any(String),
+        expect.objectContaining({
+          body: expect.objectContaining({
+            inputs: expect.objectContaining({
+              simple: 'value',
+              nested: 'nested-value',
+            }),
+          }),
+        }),
+        expect.any(Object),
+      )
+    })
+
+    it('should handle undefined pipelineId gracefully', () => {
+      // Arrange
+      mockPipelineId = undefined as any
+      mockStoreState.currentCredentialId = 'cred-1'
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - Should still call ssePost with undefined in URL
+      expect(mockSsePost).toHaveBeenCalled()
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      [{ isInPipeline: true, supportBatchUpload: true }],
+      [{ isInPipeline: true, supportBatchUpload: false }],
+      [{ isInPipeline: false, supportBatchUpload: true }],
+      [{ isInPipeline: false, supportBatchUpload: false }],
+    ])('should render correctly with props %o', (propVariation) => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('page-selector')).toBeInTheDocument()
+      expect(screen.getByTestId('page-selector-can-preview')).toHaveTextContent(
+        String(!propVariation.isInPipeline),
+      )
+      expect(screen.getByTestId('page-selector-multiple-choice')).toHaveTextContent(
+        String(propVariation.supportBatchUpload),
+      )
+    })
+
+    it('should use default values for optional props', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props: OnlineDocumentsProps = {
+        nodeId: 'node-1',
+        nodeData: createMockNodeData(),
+        onCredentialChange: jest.fn(),
+        // isInPipeline and supportBatchUpload are not provided
+      }
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - Default values: isInPipeline = false, supportBatchUpload = true
+      expect(screen.getByTestId('page-selector-can-preview')).toHaveTextContent('true')
+      expect(screen.getByTestId('page-selector-multiple-choice')).toHaveTextContent('true')
+    })
+  })
+
+  // ==========================================
+  // Integration Tests
+  // ==========================================
+  describe('Integration', () => {
+    it('should complete full workflow: load data -> search -> select -> preview', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockPages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Test Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Test Page 2' }),
+      ]
+      const mockWorkspace = createMockWorkspace({ pages: mockPages })
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          event: 'datasource_completed',
+          data: [mockWorkspace],
+          time_consuming: 100,
+        })
+      })
+
+      // Update store state after API call
+      mockStoreState.documentsData = [mockWorkspace]
+
+      const props = createDefaultProps()
+      render(<OnlineDocuments {...props} />)
+
+      // Assert - Data loaded and PageSelector shown
+      await waitFor(() => {
+        expect(mockStoreState.setDocumentsData).toHaveBeenCalled()
+      })
+
+      // Act - Search
+      const searchInput = screen.getByTestId('search-input-field')
+      fireEvent.change(searchInput, { target: { value: 'Test' } })
+      expect(mockStoreState.setSearchValue).toHaveBeenCalledWith('Test')
+
+      // Act - Select pages
+      fireEvent.click(screen.getByTestId('page-selector-select-btn'))
+      expect(mockStoreState.setSelectedPagesId).toHaveBeenCalled()
+
+      // Act - Preview page
+      fireEvent.click(screen.getByTestId('page-selector-preview-btn'))
+      expect(mockStoreState.setCurrentDocument).toHaveBeenCalled()
+    })
+
+    it('should handle error flow correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          event: 'datasource_error',
+          error: 'Failed to fetch documents',
+        })
+      })
+
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockToastNotify).toHaveBeenCalledWith({
+          type: 'error',
+          message: 'Failed to fetch documents',
+        })
+      })
+
+      // Should still show loading since documentsData is empty
+      expect(screen.getByTestId('loading')).toBeInTheDocument()
+    })
+
+    it('should handle credential change and refetch documents', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'initial-cred'
+      const mockOnCredentialChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+
+      // Act
+      render(<OnlineDocuments {...props} />)
+
+      // Initial fetch
+      expect(mockSsePost).toHaveBeenCalledTimes(1)
+
+      // Change credential
+      fireEvent.click(screen.getByTestId('header-credential-change'))
+      expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+    })
+  })
+
+  // ==========================================
+  // Styling
+  // ==========================================
+  describe('Styling', () => {
+    it('should apply correct container classes', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<OnlineDocuments {...props} />)
+
+      // Assert
+      const rootDiv = container.firstChild as HTMLElement
+      expect(rootDiv).toHaveClass('flex', 'flex-col', 'gap-y-2')
+    })
+
+    it('should apply correct classes to main content container', () => {
+      // Arrange
+      mockStoreState.documentsData = [createMockWorkspace()]
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<OnlineDocuments {...props} />)
+
+      // Assert
+      const contentContainer = container.querySelector('.rounded-xl.border')
+      expect(contentContainer).toBeInTheDocument()
+      expect(contentContainer).toHaveClass('border-components-panel-border', 'bg-background-default-subtle')
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-documents/page-selector/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-documents/page-selector/index.spec.tsx
new file mode 100644
index 0000000000..7307ef7a6f
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-documents/page-selector/index.spec.tsx
@@ -0,0 +1,1633 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import React from 'react'
+import PageSelector from './index'
+import type { NotionPageTreeItem, NotionPageTreeMap } from './index'
+import type { DataSourceNotionPage, DataSourceNotionPageMap } from '@/models/common'
+import { recursivePushInParentDescendants } from './utils'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock react-window FixedSizeList - renders items directly for testing
+jest.mock('react-window', () => ({
+  FixedSizeList: ({ children: ItemComponent, itemCount, itemData, itemKey }: any) => (
+    <div data-testid="virtual-list">
+      {Array.from({ length: itemCount }).map((_, index) => (
+        <ItemComponent
+          key={itemKey?.(index, itemData) || index}
+          index={index}
+          style={{ top: index * 28, left: 0, right: 0, width: '100%', position: 'absolute' }}
+          data={itemData}
+        />
+      ))}
+    </div>
+  ),
+}))
+
+// Note: NotionIcon from @/app/components/base/ is NOT mocked - using real component per testing guidelines
+
+// ==========================================
+// Helper Functions for Base Components
+// ==========================================
+// Get checkbox element (uses data-testid pattern from base Checkbox component)
+const getCheckbox = () => document.querySelector('[data-testid^="checkbox-"]') as HTMLElement
+const getAllCheckboxes = () => document.querySelectorAll('[data-testid^="checkbox-"]')
+
+// Get radio element (uses size-4 rounded-full class pattern from base Radio component)
+const getRadio = () => document.querySelector('.size-4.rounded-full') as HTMLElement
+const getAllRadios = () => document.querySelectorAll('.size-4.rounded-full')
+
+// Check if checkbox is checked by looking for check icon
+const isCheckboxChecked = (checkbox: Element) => checkbox.querySelector('[data-testid^="check-icon-"]') !== null
+
+// Check if checkbox is disabled by looking for disabled class
+const isCheckboxDisabled = (checkbox: Element) => checkbox.classList.contains('cursor-not-allowed')
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockPage = (overrides?: Partial<DataSourceNotionPage>): DataSourceNotionPage => ({
+  page_id: 'page-1',
+  page_name: 'Test Page',
+  page_icon: null,
+  is_bound: false,
+  parent_id: 'root',
+  type: 'page',
+  ...overrides,
+})
+
+const createMockPagesMap = (pages: DataSourceNotionPage[]): DataSourceNotionPageMap => {
+  return pages.reduce((acc, page) => {
+    acc[page.page_id] = { ...page, workspace_id: 'workspace-1' }
+    return acc
+  }, {} as DataSourceNotionPageMap)
+}
+
+type PageSelectorProps = React.ComponentProps<typeof PageSelector>
+
+const createDefaultProps = (overrides?: Partial<PageSelectorProps>): PageSelectorProps => {
+  const defaultList = [createMockPage()]
+  return {
+    checkedIds: new Set<string>(),
+    disabledValue: new Set<string>(),
+    searchValue: '',
+    pagesMap: createMockPagesMap(defaultList),
+    list: defaultList,
+    onSelect: jest.fn(),
+    canPreview: true,
+    onPreview: jest.fn(),
+    isMultipleChoice: true,
+    currentCredentialId: 'cred-1',
+    ...overrides,
+  }
+}
+
+// Helper to create hierarchical page structure
+const createHierarchicalPages = () => {
+  const rootPage = createMockPage({ page_id: 'root-page', page_name: 'Root Page', parent_id: 'root' })
+  const childPage1 = createMockPage({ page_id: 'child-1', page_name: 'Child 1', parent_id: 'root-page' })
+  const childPage2 = createMockPage({ page_id: 'child-2', page_name: 'Child 2', parent_id: 'root-page' })
+  const grandChild = createMockPage({ page_id: 'grandchild-1', page_name: 'Grandchild 1', parent_id: 'child-1' })
+
+  const list = [rootPage, childPage1, childPage2, grandChild]
+  const pagesMap = createMockPagesMap(list)
+
+  return { list, pagesMap, rootPage, childPage1, childPage2, grandChild }
+}
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('PageSelector', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('virtual-list')).toBeInTheDocument()
+    })
+
+    it('should render empty state when list is empty', () => {
+      // Arrange
+      const props = createDefaultProps({
+        list: [],
+        pagesMap: {},
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('common.dataSource.notion.selector.noSearchResult')).toBeInTheDocument()
+      expect(screen.queryByTestId('virtual-list')).not.toBeInTheDocument()
+    })
+
+    it('should render items using FixedSizeList', () => {
+      // Arrange
+      const pages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+      ]
+      const props = createDefaultProps({
+        list: pages,
+        pagesMap: createMockPagesMap(pages),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+      expect(screen.getByText('Page 2')).toBeInTheDocument()
+    })
+
+    it('should render checkboxes when isMultipleChoice is true', () => {
+      // Arrange
+      const props = createDefaultProps({ isMultipleChoice: true })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(getCheckbox()).toBeInTheDocument()
+    })
+
+    it('should render radio buttons when isMultipleChoice is false', () => {
+      // Arrange
+      const props = createDefaultProps({ isMultipleChoice: false })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(getRadio()).toBeInTheDocument()
+    })
+
+    it('should render preview button when canPreview is true', () => {
+      // Arrange
+      const props = createDefaultProps({ canPreview: true })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('common.dataSource.notion.selector.preview')).toBeInTheDocument()
+    })
+
+    it('should not render preview button when canPreview is false', () => {
+      // Arrange
+      const props = createDefaultProps({ canPreview: false })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.queryByText('common.dataSource.notion.selector.preview')).not.toBeInTheDocument()
+    })
+
+    it('should render NotionIcon for each page', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - NotionIcon renders svg when page_icon is null
+      const notionIcon = document.querySelector('.h-5.w-5')
+      expect(notionIcon).toBeInTheDocument()
+    })
+
+    it('should render page name', () => {
+      // Arrange
+      const props = createDefaultProps({
+        list: [createMockPage({ page_name: 'My Custom Page' })],
+        pagesMap: createMockPagesMap([createMockPage({ page_name: 'My Custom Page' })]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('My Custom Page')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('checkedIds prop', () => {
+      it('should mark checkbox as checked when page is in checkedIds', () => {
+        // Arrange
+        const page = createMockPage({ page_id: 'page-1' })
+        const props = createDefaultProps({
+          list: [page],
+          pagesMap: createMockPagesMap([page]),
+          checkedIds: new Set(['page-1']),
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkbox = getCheckbox()
+        expect(checkbox).toBeInTheDocument()
+        expect(isCheckboxChecked(checkbox)).toBe(true)
+      })
+
+      it('should mark checkbox as unchecked when page is not in checkedIds', () => {
+        // Arrange
+        const page = createMockPage({ page_id: 'page-1' })
+        const props = createDefaultProps({
+          list: [page],
+          pagesMap: createMockPagesMap([page]),
+          checkedIds: new Set(),
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkbox = getCheckbox()
+        expect(checkbox).toBeInTheDocument()
+        expect(isCheckboxChecked(checkbox)).toBe(false)
+      })
+
+      it('should handle empty checkedIds', () => {
+        // Arrange
+        const props = createDefaultProps({ checkedIds: new Set() })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkbox = getCheckbox()
+        expect(checkbox).toBeInTheDocument()
+        expect(isCheckboxChecked(checkbox)).toBe(false)
+      })
+
+      it('should handle multiple checked items', () => {
+        // Arrange
+        const pages = [
+          createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+          createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+          createMockPage({ page_id: 'page-3', page_name: 'Page 3' }),
+        ]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          checkedIds: new Set(['page-1', 'page-3']),
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkboxes = getAllCheckboxes()
+        expect(isCheckboxChecked(checkboxes[0])).toBe(true)
+        expect(isCheckboxChecked(checkboxes[1])).toBe(false)
+        expect(isCheckboxChecked(checkboxes[2])).toBe(true)
+      })
+    })
+
+    describe('disabledValue prop', () => {
+      it('should disable checkbox when page is in disabledValue', () => {
+        // Arrange
+        const page = createMockPage({ page_id: 'page-1' })
+        const props = createDefaultProps({
+          list: [page],
+          pagesMap: createMockPagesMap([page]),
+          disabledValue: new Set(['page-1']),
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkbox = getCheckbox()
+        expect(checkbox).toBeInTheDocument()
+        expect(isCheckboxDisabled(checkbox)).toBe(true)
+      })
+
+      it('should not disable checkbox when page is not in disabledValue', () => {
+        // Arrange
+        const page = createMockPage({ page_id: 'page-1' })
+        const props = createDefaultProps({
+          list: [page],
+          pagesMap: createMockPagesMap([page]),
+          disabledValue: new Set(),
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkbox = getCheckbox()
+        expect(checkbox).toBeInTheDocument()
+        expect(isCheckboxDisabled(checkbox)).toBe(false)
+      })
+
+      it('should handle partial disabled items', () => {
+        // Arrange
+        const pages = [
+          createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+          createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+        ]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          disabledValue: new Set(['page-1']),
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        const checkboxes = getAllCheckboxes()
+        expect(isCheckboxDisabled(checkboxes[0])).toBe(true)
+        expect(isCheckboxDisabled(checkboxes[1])).toBe(false)
+      })
+    })
+
+    describe('searchValue prop', () => {
+      it('should filter pages by search value', () => {
+        // Arrange
+        const pages = [
+          createMockPage({ page_id: 'page-1', page_name: 'Apple Page' }),
+          createMockPage({ page_id: 'page-2', page_name: 'Banana Page' }),
+          createMockPage({ page_id: 'page-3', page_name: 'Apple Pie' }),
+        ]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          searchValue: 'Apple',
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert - Only pages containing "Apple" should be visible
+        // Use getAllByText since the page name appears in both title div and breadcrumbs
+        expect(screen.getAllByText('Apple Page').length).toBeGreaterThan(0)
+        expect(screen.getAllByText('Apple Pie').length).toBeGreaterThan(0)
+        // Banana Page is filtered out because it doesn't contain "Apple"
+        expect(screen.queryByText('Banana Page')).not.toBeInTheDocument()
+      })
+
+      it('should show empty state when no pages match search', () => {
+        // Arrange
+        const pages = [createMockPage({ page_id: 'page-1', page_name: 'Test Page' })]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          searchValue: 'NonExistent',
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('common.dataSource.notion.selector.noSearchResult')).toBeInTheDocument()
+      })
+
+      it('should show all pages when searchValue is empty', () => {
+        // Arrange
+        const pages = [
+          createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+          createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+        ]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          searchValue: '',
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('Page 1')).toBeInTheDocument()
+        expect(screen.getByText('Page 2')).toBeInTheDocument()
+      })
+
+      it('should show breadcrumbs when searchValue is present', () => {
+        // Arrange
+        const { list, pagesMap } = createHierarchicalPages()
+        const props = createDefaultProps({
+          list,
+          pagesMap,
+          searchValue: 'Grandchild',
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert - page name should be visible
+        expect(screen.getByText('Grandchild 1')).toBeInTheDocument()
+      })
+
+      it('should perform case-sensitive search', () => {
+        // Arrange
+        const pages = [
+          createMockPage({ page_id: 'page-1', page_name: 'Apple Page' }),
+          createMockPage({ page_id: 'page-2', page_name: 'apple page' }),
+        ]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          searchValue: 'Apple',
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert - Only 'Apple Page' should match (case-sensitive)
+        // Use getAllByText since the page name appears in both title div and breadcrumbs
+        expect(screen.getAllByText('Apple Page').length).toBeGreaterThan(0)
+        expect(screen.queryByText('apple page')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('canPreview prop', () => {
+      it('should show preview button when canPreview is true', () => {
+        // Arrange
+        const props = createDefaultProps({ canPreview: true })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('common.dataSource.notion.selector.preview')).toBeInTheDocument()
+      })
+
+      it('should hide preview button when canPreview is false', () => {
+        // Arrange
+        const props = createDefaultProps({ canPreview: false })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(screen.queryByText('common.dataSource.notion.selector.preview')).not.toBeInTheDocument()
+      })
+
+      it('should use default value true when canPreview is not provided', () => {
+        // Arrange
+        const props = createDefaultProps()
+        delete (props as any).canPreview
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(screen.getByText('common.dataSource.notion.selector.preview')).toBeInTheDocument()
+      })
+    })
+
+    describe('isMultipleChoice prop', () => {
+      it('should render checkbox when isMultipleChoice is true', () => {
+        // Arrange
+        const props = createDefaultProps({ isMultipleChoice: true })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(getCheckbox()).toBeInTheDocument()
+        expect(getRadio()).not.toBeInTheDocument()
+      })
+
+      it('should render radio when isMultipleChoice is false', () => {
+        // Arrange
+        const props = createDefaultProps({ isMultipleChoice: false })
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(getRadio()).toBeInTheDocument()
+        expect(getCheckbox()).not.toBeInTheDocument()
+      })
+
+      it('should use default value true when isMultipleChoice is not provided', () => {
+        // Arrange
+        const props = createDefaultProps()
+        delete (props as any).isMultipleChoice
+
+        // Act
+        render(<PageSelector {...props} />)
+
+        // Assert
+        expect(getCheckbox()).toBeInTheDocument()
+      })
+    })
+
+    describe('onSelect prop', () => {
+      it('should call onSelect when checkbox is clicked', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        const props = createDefaultProps({ onSelect: mockOnSelect })
+
+        // Act
+        render(<PageSelector {...props} />)
+        fireEvent.click(getCheckbox())
+
+        // Assert
+        expect(mockOnSelect).toHaveBeenCalledTimes(1)
+        expect(mockOnSelect).toHaveBeenCalledWith(expect.any(Set))
+      })
+
+      it('should pass updated set to onSelect', () => {
+        // Arrange
+        const mockOnSelect = jest.fn()
+        const page = createMockPage({ page_id: 'page-1' })
+        const props = createDefaultProps({
+          list: [page],
+          pagesMap: createMockPagesMap([page]),
+          checkedIds: new Set(),
+          onSelect: mockOnSelect,
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+        fireEvent.click(getCheckbox())
+
+        // Assert
+        const calledSet = mockOnSelect.mock.calls[0][0] as Set<string>
+        expect(calledSet.has('page-1')).toBe(true)
+      })
+    })
+
+    describe('onPreview prop', () => {
+      it('should call onPreview when preview button is clicked', () => {
+        // Arrange
+        const mockOnPreview = jest.fn()
+        const page = createMockPage({ page_id: 'page-1' })
+        const props = createDefaultProps({
+          list: [page],
+          pagesMap: createMockPagesMap([page]),
+          onPreview: mockOnPreview,
+          canPreview: true,
+        })
+
+        // Act
+        render(<PageSelector {...props} />)
+        fireEvent.click(screen.getByText('common.dataSource.notion.selector.preview'))
+
+        // Assert
+        expect(mockOnPreview).toHaveBeenCalledWith('page-1')
+      })
+
+      it('should not throw when onPreview is undefined', () => {
+        // Arrange
+        const props = createDefaultProps({
+          onPreview: undefined,
+          canPreview: true,
+        })
+
+        // Act & Assert
+        expect(() => {
+          render(<PageSelector {...props} />)
+          fireEvent.click(screen.getByText('common.dataSource.notion.selector.preview'))
+        }).not.toThrow()
+      })
+    })
+
+    describe('currentCredentialId prop', () => {
+      it('should reset dataList when currentCredentialId changes', () => {
+        // Arrange
+        const pages = [
+          createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        ]
+        const props = createDefaultProps({
+          list: pages,
+          pagesMap: createMockPagesMap(pages),
+          currentCredentialId: 'cred-1',
+        })
+
+        // Act
+        const { rerender } = render(<PageSelector {...props} />)
+
+        // Assert - Initial render
+        expect(screen.getByText('Page 1')).toBeInTheDocument()
+
+        // Rerender with new credential
+        rerender(<PageSelector {...props} currentCredentialId="cred-2" />)
+
+        // Assert - Should still show pages (reset and rebuild)
+        expect(screen.getByText('Page 1')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // State Management and Updates
+  // ==========================================
+  describe('State Management and Updates', () => {
+    it('should initialize dataList with root level pages', () => {
+      // Arrange
+      const { list, pagesMap, rootPage, childPage1 } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Only root level page should be visible initially
+      expect(screen.getByText(rootPage.page_name)).toBeInTheDocument()
+      // Child pages should not be visible until expanded
+      expect(screen.queryByText(childPage1.page_name)).not.toBeInTheDocument()
+    })
+
+    it('should update dataList when expanding a page with children', () => {
+      // Arrange
+      const { list, pagesMap, rootPage, childPage1, childPage2 } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Find and click the expand arrow (uses hover:bg-components-button-ghost-bg-hover class)
+      const arrowButton = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      if (arrowButton)
+        fireEvent.click(arrowButton)
+
+      // Assert
+      expect(screen.getByText(rootPage.page_name)).toBeInTheDocument()
+      expect(screen.getByText(childPage1.page_name)).toBeInTheDocument()
+      expect(screen.getByText(childPage2.page_name)).toBeInTheDocument()
+    })
+
+    it('should maintain currentPreviewPageId state', () => {
+      // Arrange
+      const mockOnPreview = jest.fn()
+      const pages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+      ]
+      const props = createDefaultProps({
+        list: pages,
+        pagesMap: createMockPagesMap(pages),
+        onPreview: mockOnPreview,
+        canPreview: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      const previewButtons = screen.getAllByText('common.dataSource.notion.selector.preview')
+      fireEvent.click(previewButtons[0])
+
+      // Assert
+      expect(mockOnPreview).toHaveBeenCalledWith('page-1')
+    })
+
+    it('should use searchDataList when searchValue is present', () => {
+      // Arrange
+      const pages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Apple' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Banana' }),
+      ]
+      const props = createDefaultProps({
+        list: pages,
+        pagesMap: createMockPagesMap(pages),
+        searchValue: 'Apple',
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Only pages matching search should be visible
+      // Use getAllByText since the page name appears in both title div and breadcrumbs
+      expect(screen.getAllByText('Apple').length).toBeGreaterThan(0)
+      expect(screen.queryByText('Banana')).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    it('should reinitialize dataList when currentCredentialId changes', () => {
+      // Arrange
+      const pages = [createMockPage({ page_id: 'page-1', page_name: 'Page 1' })]
+      const props = createDefaultProps({
+        list: pages,
+        pagesMap: createMockPagesMap(pages),
+        currentCredentialId: 'cred-1',
+      })
+
+      // Act
+      const { rerender } = render(<PageSelector {...props} />)
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+
+      // Change credential
+      rerender(<PageSelector {...props} currentCredentialId="cred-2" />)
+
+      // Assert - Component should still render correctly
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+    })
+
+    it('should filter root pages correctly on initialization', () => {
+      // Arrange
+      const { list, pagesMap, rootPage, childPage1 } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Only root level pages visible
+      expect(screen.getByText(rootPage.page_name)).toBeInTheDocument()
+      expect(screen.queryByText(childPage1.page_name)).not.toBeInTheDocument()
+    })
+
+    it('should include pages whose parent is not in pagesMap', () => {
+      // Arrange
+      const orphanPage = createMockPage({
+        page_id: 'orphan-page',
+        page_name: 'Orphan Page',
+        parent_id: 'non-existent-parent',
+      })
+      const props = createDefaultProps({
+        list: [orphanPage],
+        pagesMap: createMockPagesMap([orphanPage]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Orphan page should be visible at root level
+      expect(screen.getByText('Orphan Page')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should have stable handleToggle that expands children', () => {
+      // Arrange
+      const { list, pagesMap, childPage1, childPage2 } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Find expand arrow for root page (has RiArrowRightSLine icon)
+      const expandArrow = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      if (expandArrow)
+        fireEvent.click(expandArrow)
+
+      // Assert - Children should be visible
+      expect(screen.getByText(childPage1.page_name)).toBeInTheDocument()
+      expect(screen.getByText(childPage2.page_name)).toBeInTheDocument()
+    })
+
+    it('should have stable handleToggle that collapses descendants', () => {
+      // Arrange
+      const { list, pagesMap, childPage1, childPage2 } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // First expand
+      const expandArrow = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      if (expandArrow) {
+        fireEvent.click(expandArrow)
+        // Then collapse
+        fireEvent.click(expandArrow)
+      }
+
+      // Assert - Children should be hidden again
+      expect(screen.queryByText(childPage1.page_name)).not.toBeInTheDocument()
+      expect(screen.queryByText(childPage2.page_name)).not.toBeInTheDocument()
+    })
+
+    it('should have stable handleCheck that adds page and descendants to selection', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+      const { list, pagesMap } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+        onSelect: mockOnSelect,
+        checkedIds: new Set(),
+        isMultipleChoice: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Check the root page
+      fireEvent.click(getCheckbox())
+
+      // Assert - onSelect should be called with the page and its descendants
+      expect(mockOnSelect).toHaveBeenCalled()
+      const selectedSet = mockOnSelect.mock.calls[0][0] as Set<string>
+      expect(selectedSet.has('root-page')).toBe(true)
+    })
+
+    it('should have stable handleCheck that removes page and descendants from selection', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+      const { list, pagesMap } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+        onSelect: mockOnSelect,
+        checkedIds: new Set(['root-page', 'child-1', 'child-2', 'grandchild-1']),
+        isMultipleChoice: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Uncheck the root page
+      fireEvent.click(getCheckbox())
+
+      // Assert - onSelect should be called with empty/reduced set
+      expect(mockOnSelect).toHaveBeenCalled()
+    })
+
+    it('should have stable handlePreview that updates currentPreviewPageId', () => {
+      // Arrange
+      const mockOnPreview = jest.fn()
+      const page = createMockPage({ page_id: 'preview-page' })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+        onPreview: mockOnPreview,
+        canPreview: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      fireEvent.click(screen.getByText('common.dataSource.notion.selector.preview'))
+
+      // Assert
+      expect(mockOnPreview).toHaveBeenCalledWith('preview-page')
+    })
+  })
+
+  // ==========================================
+  // Memoization Logic and Dependencies
+  // ==========================================
+  describe('Memoization Logic and Dependencies', () => {
+    it('should compute listMapWithChildrenAndDescendants correctly', () => {
+      // Arrange
+      const { list, pagesMap } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Tree structure should be built (verified by expand functionality)
+      const expandArrow = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      expect(expandArrow).toBeInTheDocument() // Root page has children
+    })
+
+    it('should recompute listMapWithChildrenAndDescendants when list changes', () => {
+      // Arrange
+      const initialList = [createMockPage({ page_id: 'page-1', page_name: 'Page 1' })]
+      const props = createDefaultProps({
+        list: initialList,
+        pagesMap: createMockPagesMap(initialList),
+      })
+
+      // Act
+      const { rerender } = render(<PageSelector {...props} />)
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+
+      // Update with new list
+      const newList = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+      ]
+      rerender(<PageSelector {...props} list={newList} pagesMap={createMockPagesMap(newList)} />)
+
+      // Assert
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+      // Page 2 won't show because dataList state hasn't updated (only resets on credentialId change)
+    })
+
+    it('should recompute listMapWithChildrenAndDescendants when pagesMap changes', () => {
+      // Arrange
+      const initialList = [createMockPage({ page_id: 'page-1', page_name: 'Page 1' })]
+      const props = createDefaultProps({
+        list: initialList,
+        pagesMap: createMockPagesMap(initialList),
+      })
+
+      // Act
+      const { rerender } = render(<PageSelector {...props} />)
+
+      // Update pagesMap
+      const newPagesMap = {
+        ...createMockPagesMap(initialList),
+        'page-2': { ...createMockPage({ page_id: 'page-2' }), workspace_id: 'ws-1' },
+      }
+      rerender(<PageSelector {...props} pagesMap={newPagesMap} />)
+
+      // Assert - Should not throw
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+    })
+
+    it('should handle empty list in memoization', () => {
+      // Arrange
+      const props = createDefaultProps({
+        list: [],
+        pagesMap: {},
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('common.dataSource.notion.selector.noSearchResult')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions and Event Handlers', () => {
+    it('should toggle expansion when clicking arrow button', () => {
+      // Arrange
+      const { list, pagesMap, childPage1 } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Initially children are hidden
+      expect(screen.queryByText(childPage1.page_name)).not.toBeInTheDocument()
+
+      // Click to expand
+      const expandArrow = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      if (expandArrow)
+        fireEvent.click(expandArrow)
+
+      // Children become visible
+      expect(screen.getByText(childPage1.page_name)).toBeInTheDocument()
+    })
+
+    it('should check/uncheck page when clicking checkbox', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+      const props = createDefaultProps({
+        onSelect: mockOnSelect,
+        checkedIds: new Set(),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      fireEvent.click(getCheckbox())
+
+      // Assert
+      expect(mockOnSelect).toHaveBeenCalled()
+    })
+
+    it('should select radio when clicking in single choice mode', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+      const props = createDefaultProps({
+        onSelect: mockOnSelect,
+        isMultipleChoice: false,
+        checkedIds: new Set(),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      fireEvent.click(getRadio())
+
+      // Assert
+      expect(mockOnSelect).toHaveBeenCalled()
+    })
+
+    it('should clear previous selection in single choice mode', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+      const pages = [
+        createMockPage({ page_id: 'page-1', page_name: 'Page 1' }),
+        createMockPage({ page_id: 'page-2', page_name: 'Page 2' }),
+      ]
+      const props = createDefaultProps({
+        list: pages,
+        pagesMap: createMockPagesMap(pages),
+        onSelect: mockOnSelect,
+        isMultipleChoice: false,
+        checkedIds: new Set(['page-1']),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      const radios = getAllRadios()
+      fireEvent.click(radios[1]) // Click on page-2
+
+      // Assert - Should clear page-1 and select page-2
+      expect(mockOnSelect).toHaveBeenCalled()
+      const selectedSet = mockOnSelect.mock.calls[0][0] as Set<string>
+      expect(selectedSet.has('page-2')).toBe(true)
+      expect(selectedSet.has('page-1')).toBe(false)
+    })
+
+    it('should trigger preview when clicking preview button', () => {
+      // Arrange
+      const mockOnPreview = jest.fn()
+      const props = createDefaultProps({
+        onPreview: mockOnPreview,
+        canPreview: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      fireEvent.click(screen.getByText('common.dataSource.notion.selector.preview'))
+
+      // Assert
+      expect(mockOnPreview).toHaveBeenCalledWith('page-1')
+    })
+
+    it('should not cascade selection in search mode', () => {
+      // Arrange
+      const mockOnSelect = jest.fn()
+      const { list, pagesMap } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+        onSelect: mockOnSelect,
+        checkedIds: new Set(),
+        searchValue: 'Root',
+        isMultipleChoice: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+      fireEvent.click(getCheckbox())
+
+      // Assert - Only the clicked page should be selected (no descendants)
+      expect(mockOnSelect).toHaveBeenCalled()
+      const selectedSet = mockOnSelect.mock.calls[0][0] as Set<string>
+      expect(selectedSet.size).toBe(1)
+      expect(selectedSet.has('root-page')).toBe(true)
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle empty list', () => {
+      // Arrange
+      const props = createDefaultProps({
+        list: [],
+        pagesMap: {},
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('common.dataSource.notion.selector.noSearchResult')).toBeInTheDocument()
+    })
+
+    it('should handle null page_icon', () => {
+      // Arrange
+      const page = createMockPage({ page_icon: null })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - NotionIcon renders svg (RiFileTextLine) when page_icon is null
+      const notionIcon = document.querySelector('.h-5.w-5')
+      expect(notionIcon).toBeInTheDocument()
+    })
+
+    it('should handle page_icon with all properties', () => {
+      // Arrange
+      const page = createMockPage({
+        page_icon: { type: 'emoji', url: null, emoji: '📄' },
+      })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - NotionIcon renders the emoji
+      expect(screen.getByText('📄')).toBeInTheDocument()
+    })
+
+    it('should handle empty searchValue correctly', () => {
+      // Arrange
+      const props = createDefaultProps({ searchValue: '' })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('virtual-list')).toBeInTheDocument()
+    })
+
+    it('should handle special characters in page name', () => {
+      // Arrange
+      const page = createMockPage({ page_name: 'Test <script>alert("xss")</script>' })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('Test <script>alert("xss")</script>')).toBeInTheDocument()
+    })
+
+    it('should handle unicode characters in page name', () => {
+      // Arrange
+      const page = createMockPage({ page_name: '测试页面 🔍 привет' })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText('测试页面 🔍 привет')).toBeInTheDocument()
+    })
+
+    it('should handle very long page names', () => {
+      // Arrange
+      const longName = 'A'.repeat(500)
+      const page = createMockPage({ page_name: longName })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByText(longName)).toBeInTheDocument()
+    })
+
+    it('should handle deeply nested hierarchy', () => {
+      // Arrange - Create 5 levels deep
+      const pages: DataSourceNotionPage[] = []
+      let parentId = 'root'
+
+      for (let i = 0; i < 5; i++) {
+        const page = createMockPage({
+          page_id: `level-${i}`,
+          page_name: `Level ${i}`,
+          parent_id: parentId,
+        })
+        pages.push(page)
+        parentId = page.page_id
+      }
+
+      const props = createDefaultProps({
+        list: pages,
+        pagesMap: createMockPagesMap(pages),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Only root level visible
+      expect(screen.getByText('Level 0')).toBeInTheDocument()
+      expect(screen.queryByText('Level 1')).not.toBeInTheDocument()
+    })
+
+    it('should handle page with missing parent reference gracefully', () => {
+      // Arrange - Page whose parent doesn't exist in pagesMap (valid edge case)
+      const orphanPage = createMockPage({
+        page_id: 'orphan',
+        page_name: 'Orphan Page',
+        parent_id: 'non-existent-parent',
+      })
+      // Create pagesMap without the parent
+      const pagesMap = createMockPagesMap([orphanPage])
+      const props = createDefaultProps({
+        list: [orphanPage],
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Should render the orphan page at root level
+      expect(screen.getByText('Orphan Page')).toBeInTheDocument()
+    })
+
+    it('should handle empty checkedIds Set', () => {
+      // Arrange
+      const props = createDefaultProps({ checkedIds: new Set() })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      const checkbox = getCheckbox()
+      expect(checkbox).toBeInTheDocument()
+      expect(isCheckboxChecked(checkbox)).toBe(false)
+    })
+
+    it('should handle empty disabledValue Set', () => {
+      // Arrange
+      const props = createDefaultProps({ disabledValue: new Set() })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      const checkbox = getCheckbox()
+      expect(checkbox).toBeInTheDocument()
+      expect(isCheckboxDisabled(checkbox)).toBe(false)
+    })
+
+    it('should handle undefined onPreview gracefully', () => {
+      // Arrange
+      const props = createDefaultProps({
+        onPreview: undefined,
+        canPreview: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Click should not throw
+      expect(() => {
+        fireEvent.click(screen.getByText('common.dataSource.notion.selector.preview'))
+      }).not.toThrow()
+    })
+
+    it('should handle page without descendants correctly', () => {
+      // Arrange
+      const leafPage = createMockPage({ page_id: 'leaf', page_name: 'Leaf Page' })
+      const props = createDefaultProps({
+        list: [leafPage],
+        pagesMap: createMockPagesMap([leafPage]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - No expand arrow for leaf pages
+      const arrowButton = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      expect(arrowButton).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      [{ canPreview: true, isMultipleChoice: true }],
+      [{ canPreview: true, isMultipleChoice: false }],
+      [{ canPreview: false, isMultipleChoice: true }],
+      [{ canPreview: false, isMultipleChoice: false }],
+    ])('should render correctly with props %o', (propVariation) => {
+      // Arrange
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('virtual-list')).toBeInTheDocument()
+      if (propVariation.canPreview)
+        expect(screen.getByText('common.dataSource.notion.selector.preview')).toBeInTheDocument()
+      else
+        expect(screen.queryByText('common.dataSource.notion.selector.preview')).not.toBeInTheDocument()
+
+      if (propVariation.isMultipleChoice)
+        expect(getCheckbox()).toBeInTheDocument()
+      else
+        expect(getRadio()).toBeInTheDocument()
+    })
+
+    it('should handle all default prop values', () => {
+      // Arrange
+      const minimalProps: PageSelectorProps = {
+        checkedIds: new Set(),
+        disabledValue: new Set(),
+        searchValue: '',
+        pagesMap: createMockPagesMap([createMockPage()]),
+        list: [createMockPage()],
+        onSelect: jest.fn(),
+        currentCredentialId: 'cred-1',
+        // canPreview defaults to true
+        // isMultipleChoice defaults to true
+      }
+
+      // Act
+      render(<PageSelector {...minimalProps} />)
+
+      // Assert - Defaults should be applied
+      expect(getCheckbox()).toBeInTheDocument()
+      expect(screen.getByText('common.dataSource.notion.selector.preview')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Utils Function Tests
+  // ==========================================
+  describe('Utils - recursivePushInParentDescendants', () => {
+    it('should build tree structure for simple parent-child relationship', () => {
+      // Arrange
+      const parent = createMockPage({ page_id: 'parent', page_name: 'Parent', parent_id: 'root' })
+      const child = createMockPage({ page_id: 'child', page_name: 'Child', parent_id: 'parent' })
+      const pagesMap = createMockPagesMap([parent, child])
+      const listTreeMap: NotionPageTreeMap = {}
+
+      // Create initial entry for child
+      const childEntry: NotionPageTreeItem = {
+        ...child,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      listTreeMap[child.page_id] = childEntry
+
+      // Act
+      recursivePushInParentDescendants(pagesMap, listTreeMap, childEntry, childEntry)
+
+      // Assert
+      expect(listTreeMap.parent).toBeDefined()
+      expect(listTreeMap.parent.children.has('child')).toBe(true)
+      expect(listTreeMap.parent.descendants.has('child')).toBe(true)
+      expect(childEntry.depth).toBe(1)
+      expect(childEntry.ancestors).toContain('Parent')
+    })
+
+    it('should handle root level pages', () => {
+      // Arrange
+      const rootPage = createMockPage({ page_id: 'root-page', parent_id: 'root' })
+      const pagesMap = createMockPagesMap([rootPage])
+      const listTreeMap: NotionPageTreeMap = {}
+
+      const rootEntry: NotionPageTreeItem = {
+        ...rootPage,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      listTreeMap[rootPage.page_id] = rootEntry
+
+      // Act
+      recursivePushInParentDescendants(pagesMap, listTreeMap, rootEntry, rootEntry)
+
+      // Assert - No parent should be created for root level
+      expect(Object.keys(listTreeMap)).toHaveLength(1)
+      expect(rootEntry.depth).toBe(0)
+      expect(rootEntry.ancestors).toHaveLength(0)
+    })
+
+    it('should handle missing parent in pagesMap', () => {
+      // Arrange
+      const orphan = createMockPage({ page_id: 'orphan', parent_id: 'missing-parent' })
+      const pagesMap = createMockPagesMap([orphan])
+      const listTreeMap: NotionPageTreeMap = {}
+
+      const orphanEntry: NotionPageTreeItem = {
+        ...orphan,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      listTreeMap[orphan.page_id] = orphanEntry
+
+      // Act
+      recursivePushInParentDescendants(pagesMap, listTreeMap, orphanEntry, orphanEntry)
+
+      // Assert - Should not create parent entry for missing parent
+      expect(listTreeMap['missing-parent']).toBeUndefined()
+    })
+
+    it('should handle null parent_id', () => {
+      // Arrange
+      const page = createMockPage({ page_id: 'page', parent_id: '' })
+      const pagesMap = createMockPagesMap([page])
+      const listTreeMap: NotionPageTreeMap = {}
+
+      const pageEntry: NotionPageTreeItem = {
+        ...page,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      listTreeMap[page.page_id] = pageEntry
+
+      // Act
+      recursivePushInParentDescendants(pagesMap, listTreeMap, pageEntry, pageEntry)
+
+      // Assert - Early return, no changes
+      expect(Object.keys(listTreeMap)).toHaveLength(1)
+    })
+
+    it('should accumulate depth for deeply nested pages', () => {
+      // Arrange - 3 levels deep
+      const level0 = createMockPage({ page_id: 'l0', page_name: 'Level 0', parent_id: 'root' })
+      const level1 = createMockPage({ page_id: 'l1', page_name: 'Level 1', parent_id: 'l0' })
+      const level2 = createMockPage({ page_id: 'l2', page_name: 'Level 2', parent_id: 'l1' })
+      const pagesMap = createMockPagesMap([level0, level1, level2])
+      const listTreeMap: NotionPageTreeMap = {}
+
+      // Add all levels
+      const l0Entry: NotionPageTreeItem = {
+        ...level0,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      const l1Entry: NotionPageTreeItem = {
+        ...level1,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      const l2Entry: NotionPageTreeItem = {
+        ...level2,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+
+      listTreeMap[level0.page_id] = l0Entry
+      listTreeMap[level1.page_id] = l1Entry
+      listTreeMap[level2.page_id] = l2Entry
+
+      // Act - Process from leaf to root
+      recursivePushInParentDescendants(pagesMap, listTreeMap, l2Entry, l2Entry)
+
+      // Assert
+      expect(l2Entry.depth).toBe(2)
+      expect(l2Entry.ancestors).toEqual(['Level 0', 'Level 1'])
+      expect(listTreeMap.l1.children.has('l2')).toBe(true)
+      expect(listTreeMap.l0.descendants.has('l2')).toBe(true)
+    })
+
+    it('should update existing parent entry', () => {
+      // Arrange
+      const parent = createMockPage({ page_id: 'parent', page_name: 'Parent', parent_id: 'root' })
+      const child1 = createMockPage({ page_id: 'child1', parent_id: 'parent' })
+      const child2 = createMockPage({ page_id: 'child2', parent_id: 'parent' })
+      const pagesMap = createMockPagesMap([parent, child1, child2])
+      const listTreeMap: NotionPageTreeMap = {}
+
+      // Pre-create parent entry
+      listTreeMap.parent = {
+        ...parent,
+        children: new Set(['child1']),
+        descendants: new Set(['child1']),
+        depth: 0,
+        ancestors: [],
+      }
+
+      const child2Entry: NotionPageTreeItem = {
+        ...child2,
+        children: new Set(),
+        descendants: new Set(),
+        depth: 0,
+        ancestors: [],
+      }
+      listTreeMap[child2.page_id] = child2Entry
+
+      // Act
+      recursivePushInParentDescendants(pagesMap, listTreeMap, child2Entry, child2Entry)
+
+      // Assert - Should add child2 to existing parent
+      expect(listTreeMap.parent.children.has('child1')).toBe(true)
+      expect(listTreeMap.parent.children.has('child2')).toBe(true)
+      expect(listTreeMap.parent.descendants.has('child1')).toBe(true)
+      expect(listTreeMap.parent.descendants.has('child2')).toBe(true)
+    })
+  })
+
+  // ==========================================
+  // Item Component Integration Tests
+  // ==========================================
+  describe('Item Component Integration', () => {
+    it('should render item with correct styling for preview state', () => {
+      // Arrange
+      const page = createMockPage({ page_id: 'page-1', page_name: 'Test Page' })
+      const props = createDefaultProps({
+        list: [page],
+        pagesMap: createMockPagesMap([page]),
+        canPreview: true,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Click preview to set currentPreviewPageId
+      fireEvent.click(screen.getByText('common.dataSource.notion.selector.preview'))
+
+      // Assert - Item should have preview styling class
+      const itemContainer = screen.getByText('Test Page').closest('[class*="group"]')
+      expect(itemContainer).toHaveClass('bg-state-base-hover')
+    })
+
+    it('should show arrow for pages with children', () => {
+      // Arrange
+      const { list, pagesMap } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - Root page should have expand arrow
+      const arrowContainer = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      expect(arrowContainer).toBeInTheDocument()
+    })
+
+    it('should not show arrow for leaf pages', () => {
+      // Arrange
+      const leafPage = createMockPage({ page_id: 'leaf', page_name: 'Leaf' })
+      const props = createDefaultProps({
+        list: [leafPage],
+        pagesMap: createMockPagesMap([leafPage]),
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - No expand arrow for leaf pages
+      const arrowContainer = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      expect(arrowContainer).not.toBeInTheDocument()
+    })
+
+    it('should hide arrows in search mode', () => {
+      // Arrange
+      const { list, pagesMap } = createHierarchicalPages()
+      const props = createDefaultProps({
+        list,
+        pagesMap,
+        searchValue: 'Root',
+      })
+
+      // Act
+      render(<PageSelector {...props} />)
+
+      // Assert - No expand arrows in search mode (renderArrow returns null when searchValue)
+      // The arrows are only shown when !searchValue
+      const arrowContainer = document.querySelector('[class*="hover:bg-components-button-ghost-bg-hover"]')
+      expect(arrowContainer).not.toBeInTheDocument()
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/connect/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/connect/index.spec.tsx
new file mode 100644
index 0000000000..8475a01fa8
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/connect/index.spec.tsx
@@ -0,0 +1,622 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import Connect from './index'
+import type { DataSourceNodeType } from '@/app/components/workflow/nodes/data-source/types'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock useToolIcon - hook has complex dependencies (API calls, stores)
+const mockUseToolIcon = jest.fn()
+jest.mock('@/app/components/workflow/hooks', () => ({
+  useToolIcon: (data: any) => mockUseToolIcon(data),
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockNodeData = (overrides?: Partial<DataSourceNodeType>): DataSourceNodeType => ({
+  title: 'Test Node',
+  plugin_id: 'plugin-123',
+  provider_type: 'online_drive',
+  provider_name: 'online-drive-provider',
+  datasource_name: 'online-drive-ds',
+  datasource_label: 'Online Drive',
+  datasource_parameters: {},
+  datasource_configurations: {},
+  ...overrides,
+} as DataSourceNodeType)
+
+type ConnectProps = React.ComponentProps<typeof Connect>
+
+const createDefaultProps = (overrides?: Partial<ConnectProps>): ConnectProps => ({
+  nodeData: createMockNodeData(),
+  onSetting: jest.fn(),
+  ...overrides,
+})
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('Connect', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+
+    // Default mock return values
+    mockUseToolIcon.mockReturnValue('https://example.com/icon.png')
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Component should render with connect button
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should render the BlockIcon component', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Connect {...props} />)
+
+      // Assert - BlockIcon container should exist
+      const iconContainer = container.querySelector('.size-12')
+      expect(iconContainer).toBeInTheDocument()
+    })
+
+    it('should render the not connected message with node title', () => {
+      // Arrange
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ title: 'My Google Drive' }),
+      })
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Should show translation key with interpolated name (use getAllBy since both messages contain similar text)
+      const messages = screen.getAllByText(/datasetPipeline\.onlineDrive\.notConnected/)
+      expect(messages.length).toBeGreaterThanOrEqual(1)
+    })
+
+    it('should render the not connected tip message', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Should show tip translation key
+      expect(screen.getByText(/datasetPipeline\.onlineDrive\.notConnectedTip/)).toBeInTheDocument()
+    })
+
+    it('should render the connect button with correct text', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Button should have connect text
+      const button = screen.getByRole('button')
+      expect(button).toHaveTextContent('datasetCreation.stepOne.connect')
+    })
+
+    it('should render with primary button variant', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Button should be primary variant
+      const button = screen.getByRole('button')
+      expect(button).toBeInTheDocument()
+    })
+
+    it('should render Icon3Dots component', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Connect {...props} />)
+
+      // Assert - Icon3Dots should be rendered (it's an SVG element)
+      const iconElement = container.querySelector('svg')
+      expect(iconElement).toBeInTheDocument()
+    })
+
+    it('should apply correct container styling', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Connect {...props} />)
+
+      // Assert - Container should have expected classes
+      const mainContainer = container.firstChild
+      expect(mainContainer).toHaveClass('flex', 'flex-col', 'items-start', 'gap-y-2', 'rounded-xl', 'p-6')
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('nodeData prop', () => {
+      it('should pass nodeData to useToolIcon hook', () => {
+        // Arrange
+        const nodeData = createMockNodeData({ plugin_id: 'my-plugin' })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(mockUseToolIcon).toHaveBeenCalledWith(nodeData)
+      })
+
+      it('should display node title in not connected message', () => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title: 'Dropbox Storage' }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Translation key should be in document (mock returns key)
+        const messages = screen.getAllByText(/datasetPipeline\.onlineDrive\.notConnected/)
+        expect(messages.length).toBeGreaterThanOrEqual(1)
+      })
+
+      it('should display node title in tip message', () => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title: 'OneDrive Connector' }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Translation key should be in document
+        expect(screen.getByText(/datasetPipeline\.onlineDrive\.notConnectedTip/)).toBeInTheDocument()
+      })
+
+      it.each([
+        { title: 'Google Drive' },
+        { title: 'Dropbox' },
+        { title: 'OneDrive' },
+        { title: 'Amazon S3' },
+        { title: '' },
+      ])('should handle nodeData with title=$title', ({ title }) => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Should render without error
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+
+    describe('onSetting prop', () => {
+      it('should call onSetting when connect button is clicked', () => {
+        // Arrange
+        const mockOnSetting = jest.fn()
+        const props = createDefaultProps({ onSetting: mockOnSetting })
+
+        // Act
+        render(<Connect {...props} />)
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        expect(mockOnSetting).toHaveBeenCalledTimes(1)
+      })
+
+      it('should call onSetting when button clicked', () => {
+        // Arrange
+        const mockOnSetting = jest.fn()
+        const props = createDefaultProps({ onSetting: mockOnSetting })
+
+        // Act
+        render(<Connect {...props} />)
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert - onClick handler receives the click event from React
+        expect(mockOnSetting).toHaveBeenCalled()
+        expect(mockOnSetting.mock.calls[0]).toBeDefined()
+      })
+
+      it('should call onSetting on each button click', () => {
+        // Arrange
+        const mockOnSetting = jest.fn()
+        const props = createDefaultProps({ onSetting: mockOnSetting })
+
+        // Act
+        render(<Connect {...props} />)
+        const button = screen.getByRole('button')
+        fireEvent.click(button)
+        fireEvent.click(button)
+        fireEvent.click(button)
+
+        // Assert
+        expect(mockOnSetting).toHaveBeenCalledTimes(3)
+      })
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions', () => {
+    describe('Connect Button', () => {
+      it('should trigger onSetting callback on click', () => {
+        // Arrange
+        const mockOnSetting = jest.fn()
+        const props = createDefaultProps({ onSetting: mockOnSetting })
+        render(<Connect {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        expect(mockOnSetting).toHaveBeenCalled()
+      })
+
+      it('should be interactive and focusable', () => {
+        // Arrange
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+        const button = screen.getByRole('button')
+
+        // Assert
+        expect(button).not.toBeDisabled()
+      })
+
+      it('should handle keyboard interaction (Enter key)', () => {
+        // Arrange
+        const mockOnSetting = jest.fn()
+        const props = createDefaultProps({ onSetting: mockOnSetting })
+        render(<Connect {...props} />)
+
+        // Act
+        const button = screen.getByRole('button')
+        fireEvent.keyDown(button, { key: 'Enter' })
+
+        // Assert - Button should be present and interactive
+        expect(button).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Hook Integration Tests
+  // ==========================================
+  describe('Hook Integration', () => {
+    describe('useToolIcon', () => {
+      it('should call useToolIcon with nodeData', () => {
+        // Arrange
+        const nodeData = createMockNodeData()
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(mockUseToolIcon).toHaveBeenCalledWith(nodeData)
+      })
+
+      it('should use toolIcon result from useToolIcon', () => {
+        // Arrange
+        mockUseToolIcon.mockReturnValue('custom-icon-url')
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - The hook should be called and its return value used
+        expect(mockUseToolIcon).toHaveBeenCalled()
+      })
+
+      it('should handle empty string icon', () => {
+        // Arrange
+        mockUseToolIcon.mockReturnValue('')
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Should still render without crashing
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle undefined icon', () => {
+        // Arrange
+        mockUseToolIcon.mockReturnValue(undefined)
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Should still render without crashing
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+
+    describe('useTranslation', () => {
+      it('should use correct translation keys for not connected message', () => {
+        // Arrange
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Should use the correct translation key (both notConnected and notConnectedTip contain similar pattern)
+        const messages = screen.getAllByText(/datasetPipeline\.onlineDrive\.notConnected/)
+        expect(messages.length).toBeGreaterThanOrEqual(1)
+      })
+
+      it('should use correct translation key for tip message', () => {
+        // Arrange
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByText(/datasetPipeline\.onlineDrive\.notConnectedTip/)).toBeInTheDocument()
+      })
+
+      it('should use correct translation key for connect button', () => {
+        // Arrange
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toHaveTextContent('datasetCreation.stepOne.connect')
+      })
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    describe('Empty/Null Values', () => {
+      it('should handle empty title in nodeData', () => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title: '' }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle undefined optional fields in nodeData', () => {
+        // Arrange
+        const minimalNodeData = {
+          title: 'Test',
+          plugin_id: 'test',
+          provider_type: 'online_drive',
+          provider_name: 'provider',
+          datasource_name: 'ds',
+          datasource_label: 'Label',
+          datasource_parameters: {},
+          datasource_configurations: {},
+        } as DataSourceNodeType
+        const props = createDefaultProps({ nodeData: minimalNodeData })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle empty plugin_id', () => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ plugin_id: '' }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+
+    describe('Special Characters', () => {
+      it('should handle special characters in title', () => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title: 'Drive <script>alert("xss")</script>' }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert - Should render safely without executing script
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle unicode characters in title', () => {
+        // Arrange
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title: '云盘存储 🌐' }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle very long title', () => {
+        // Arrange
+        const longTitle = 'A'.repeat(500)
+        const props = createDefaultProps({
+          nodeData: createMockNodeData({ title: longTitle }),
+        })
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+
+    describe('Icon Variations', () => {
+      it('should handle string icon URL', () => {
+        // Arrange
+        mockUseToolIcon.mockReturnValue('https://cdn.example.com/icon.png')
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle object icon with url property', () => {
+        // Arrange
+        mockUseToolIcon.mockReturnValue({ url: 'https://cdn.example.com/icon.png' })
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+
+      it('should handle null icon', () => {
+        // Arrange
+        mockUseToolIcon.mockReturnValue(null)
+        const props = createDefaultProps()
+
+        // Act
+        render(<Connect {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { title: 'Google Drive', plugin_id: 'google-drive' },
+      { title: 'Dropbox', plugin_id: 'dropbox' },
+      { title: 'OneDrive', plugin_id: 'onedrive' },
+      { title: 'Amazon S3', plugin_id: 's3' },
+      { title: 'Box', plugin_id: 'box' },
+    ])('should render correctly with title=$title and plugin_id=$plugin_id', ({ title, plugin_id }) => {
+      // Arrange
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ title, plugin_id }),
+      })
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+      expect(mockUseToolIcon).toHaveBeenCalledWith(
+        expect.objectContaining({ title, plugin_id }),
+      )
+    })
+
+    it.each([
+      { provider_type: 'online_drive' },
+      { provider_type: 'cloud_storage' },
+      { provider_type: 'file_system' },
+    ])('should render correctly with provider_type=$provider_type', ({ provider_type }) => {
+      // Arrange
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ provider_type }),
+      })
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it.each([
+      { datasource_label: 'Google Drive Storage' },
+      { datasource_label: 'Dropbox Files' },
+      { datasource_label: '' },
+      { datasource_label: 'S3 Bucket' },
+    ])('should render correctly with datasource_label=$datasource_label', ({ datasource_label }) => {
+      // Arrange
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ datasource_label }),
+      })
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Accessibility Tests
+  // ==========================================
+  describe('Accessibility', () => {
+    it('should have an accessible button', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Button should be accessible by role
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should have proper text content for screen readers', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Connect {...props} />)
+
+      // Assert - Text content should be present
+      const messages = screen.getAllByText(/datasetPipeline\.onlineDrive\.notConnected/)
+      expect(messages.length).toBe(2) // Both notConnected and notConnectedTip
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/breadcrumbs/dropdown/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/breadcrumbs/dropdown/index.spec.tsx
new file mode 100644
index 0000000000..887ca856cc
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/breadcrumbs/dropdown/index.spec.tsx
@@ -0,0 +1,865 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import React from 'react'
+import Dropdown from './index'
+
+// ==========================================
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+// ==========================================
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+type DropdownProps = React.ComponentProps<typeof Dropdown>
+
+const createDefaultProps = (overrides?: Partial<DropdownProps>): DropdownProps => ({
+  startIndex: 0,
+  breadcrumbs: ['folder1', 'folder2'],
+  onBreadcrumbClick: jest.fn(),
+  ...overrides,
+})
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('Dropdown', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Dropdown {...props} />)
+
+      // Assert - Trigger button should be visible
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should render trigger button with more icon', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Dropdown {...props} />)
+
+      // Assert - Button should have RiMoreFill icon (rendered as svg)
+      const button = screen.getByRole('button')
+      expect(button).toBeInTheDocument()
+      expect(container.querySelector('svg')).toBeInTheDocument()
+    })
+
+    it('should render separator after dropdown', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Dropdown {...props} />)
+
+      // Assert - Separator "/" should be visible
+      expect(screen.getByText('/')).toBeInTheDocument()
+    })
+
+    it('should render trigger button with correct default styles', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Dropdown {...props} />)
+
+      // Assert
+      const button = screen.getByRole('button')
+      expect(button).toHaveClass('flex')
+      expect(button).toHaveClass('size-6')
+      expect(button).toHaveClass('items-center')
+      expect(button).toHaveClass('justify-center')
+      expect(button).toHaveClass('rounded-md')
+    })
+
+    it('should not render menu content when closed', () => {
+      // Arrange
+      const props = createDefaultProps({ breadcrumbs: ['visible-folder'] })
+
+      // Act
+      render(<Dropdown {...props} />)
+
+      // Assert - Menu content should not be visible when dropdown is closed
+      expect(screen.queryByText('visible-folder')).not.toBeInTheDocument()
+    })
+
+    it('should render menu content when opened', async () => {
+      // Arrange
+      const props = createDefaultProps({ breadcrumbs: ['test-folder1', 'test-folder2'] })
+      render(<Dropdown {...props} />)
+
+      // Act - Open dropdown
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - Menu items should be visible
+      await waitFor(() => {
+        expect(screen.getByText('test-folder1')).toBeInTheDocument()
+        expect(screen.getByText('test-folder2')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('startIndex prop', () => {
+      it('should pass startIndex to Menu component', async () => {
+        // Arrange
+        const mockOnBreadcrumbClick = jest.fn()
+        const props = createDefaultProps({
+          startIndex: 5,
+          breadcrumbs: ['folder1'],
+          onBreadcrumbClick: mockOnBreadcrumbClick,
+        })
+        render(<Dropdown {...props} />)
+
+        // Act - Open dropdown and click on item
+        fireEvent.click(screen.getByRole('button'))
+
+        await waitFor(() => {
+          expect(screen.getByText('folder1')).toBeInTheDocument()
+        })
+
+        fireEvent.click(screen.getByText('folder1'))
+
+        // Assert - Should be called with startIndex (5) + item index (0) = 5
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(5)
+      })
+
+      it('should calculate correct index for second item', async () => {
+        // Arrange
+        const mockOnBreadcrumbClick = jest.fn()
+        const props = createDefaultProps({
+          startIndex: 3,
+          breadcrumbs: ['folder1', 'folder2'],
+          onBreadcrumbClick: mockOnBreadcrumbClick,
+        })
+        render(<Dropdown {...props} />)
+
+        // Act - Open dropdown and click on second item
+        fireEvent.click(screen.getByRole('button'))
+
+        await waitFor(() => {
+          expect(screen.getByText('folder2')).toBeInTheDocument()
+        })
+
+        fireEvent.click(screen.getByText('folder2'))
+
+        // Assert - Should be called with startIndex (3) + item index (1) = 4
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(4)
+      })
+    })
+
+    describe('breadcrumbs prop', () => {
+      it('should render all breadcrumbs in menu', async () => {
+        // Arrange
+        const props = createDefaultProps({
+          breadcrumbs: ['folder-a', 'folder-b', 'folder-c'],
+        })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        await waitFor(() => {
+          expect(screen.getByText('folder-a')).toBeInTheDocument()
+          expect(screen.getByText('folder-b')).toBeInTheDocument()
+          expect(screen.getByText('folder-c')).toBeInTheDocument()
+        })
+      })
+
+      it('should handle single breadcrumb', async () => {
+        // Arrange
+        const props = createDefaultProps({
+          breadcrumbs: ['single-folder'],
+        })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        await waitFor(() => {
+          expect(screen.getByText('single-folder')).toBeInTheDocument()
+        })
+      })
+
+      it('should handle empty breadcrumbs array', async () => {
+        // Arrange
+        const props = createDefaultProps({
+          breadcrumbs: [],
+        })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert - Menu should be rendered but with no items
+        await waitFor(() => {
+          // The menu container should exist but be empty
+          expect(screen.getByRole('button')).toBeInTheDocument()
+        })
+      })
+
+      it('should handle breadcrumbs with special characters', async () => {
+        // Arrange
+        const props = createDefaultProps({
+          breadcrumbs: ['folder [1]', 'folder (copy)', 'folder-v2.0'],
+        })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        await waitFor(() => {
+          expect(screen.getByText('folder [1]')).toBeInTheDocument()
+          expect(screen.getByText('folder (copy)')).toBeInTheDocument()
+          expect(screen.getByText('folder-v2.0')).toBeInTheDocument()
+        })
+      })
+
+      it('should handle breadcrumbs with unicode characters', async () => {
+        // Arrange
+        const props = createDefaultProps({
+          breadcrumbs: ['文件夹', 'フォルダ', 'Папка'],
+        })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        await waitFor(() => {
+          expect(screen.getByText('文件夹')).toBeInTheDocument()
+          expect(screen.getByText('フォルダ')).toBeInTheDocument()
+          expect(screen.getByText('Папка')).toBeInTheDocument()
+        })
+      })
+    })
+
+    describe('onBreadcrumbClick prop', () => {
+      it('should call onBreadcrumbClick with correct index when item clicked', async () => {
+        // Arrange
+        const mockOnBreadcrumbClick = jest.fn()
+        const props = createDefaultProps({
+          startIndex: 0,
+          breadcrumbs: ['folder1'],
+          onBreadcrumbClick: mockOnBreadcrumbClick,
+        })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        await waitFor(() => {
+          expect(screen.getByText('folder1')).toBeInTheDocument()
+        })
+
+        fireEvent.click(screen.getByText('folder1'))
+
+        // Assert
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(0)
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledTimes(1)
+      })
+    })
+  })
+
+  // ==========================================
+  // State Management Tests
+  // ==========================================
+  describe('State Management', () => {
+    describe('open state', () => {
+      it('should initialize with closed state', () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['test-folder'] })
+
+        // Act
+        render(<Dropdown {...props} />)
+
+        // Assert - Menu content should not be visible
+        expect(screen.queryByText('test-folder')).not.toBeInTheDocument()
+      })
+
+      it('should toggle to open state when trigger is clicked', async () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['test-folder'] })
+        render(<Dropdown {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        await waitFor(() => {
+          expect(screen.getByText('test-folder')).toBeInTheDocument()
+        })
+      })
+
+      it('should toggle to closed state when trigger is clicked again', async () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['test-folder'] })
+        render(<Dropdown {...props} />)
+
+        // Act - Open and then close
+        fireEvent.click(screen.getByRole('button'))
+        await waitFor(() => {
+          expect(screen.getByText('test-folder')).toBeInTheDocument()
+        })
+
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        await waitFor(() => {
+          expect(screen.queryByText('test-folder')).not.toBeInTheDocument()
+        })
+      })
+
+      it('should close when breadcrumb item is clicked', async () => {
+        // Arrange
+        const mockOnBreadcrumbClick = jest.fn()
+        const props = createDefaultProps({
+          breadcrumbs: ['test-folder'],
+          onBreadcrumbClick: mockOnBreadcrumbClick,
+        })
+        render(<Dropdown {...props} />)
+
+        // Act - Open dropdown
+        fireEvent.click(screen.getByRole('button'))
+
+        await waitFor(() => {
+          expect(screen.getByText('test-folder')).toBeInTheDocument()
+        })
+
+        // Click on breadcrumb item
+        fireEvent.click(screen.getByText('test-folder'))
+
+        // Assert - Menu should close
+        await waitFor(() => {
+          expect(screen.queryByText('test-folder')).not.toBeInTheDocument()
+        })
+      })
+
+      it('should apply correct button styles based on open state', async () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['test-folder'] })
+        render(<Dropdown {...props} />)
+        const button = screen.getByRole('button')
+
+        // Assert - Initial state (closed): should have hover:bg-state-base-hover
+        expect(button).toHaveClass('hover:bg-state-base-hover')
+
+        // Act - Open dropdown
+        fireEvent.click(button)
+
+        // Assert - Open state: should have bg-state-base-hover
+        await waitFor(() => {
+          expect(button).toHaveClass('bg-state-base-hover')
+        })
+      })
+    })
+  })
+
+  // ==========================================
+  // Event Handlers Tests
+  // ==========================================
+  describe('Event Handlers', () => {
+    describe('handleTrigger', () => {
+      it('should toggle open state when trigger is clicked', async () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['folder'] })
+        render(<Dropdown {...props} />)
+
+        // Act & Assert - Initially closed
+        expect(screen.queryByText('folder')).not.toBeInTheDocument()
+
+        // Act - Click to open
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert - Now open
+        await waitFor(() => {
+          expect(screen.getByText('folder')).toBeInTheDocument()
+        })
+      })
+
+      it('should toggle multiple times correctly', async () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['folder'] })
+        render(<Dropdown {...props} />)
+        const button = screen.getByRole('button')
+
+        // Act & Assert - Toggle multiple times
+        // 1st click - open
+        fireEvent.click(button)
+        await waitFor(() => {
+          expect(screen.getByText('folder')).toBeInTheDocument()
+        })
+
+        // 2nd click - close
+        fireEvent.click(button)
+        await waitFor(() => {
+          expect(screen.queryByText('folder')).not.toBeInTheDocument()
+        })
+
+        // 3rd click - open again
+        fireEvent.click(button)
+        await waitFor(() => {
+          expect(screen.getByText('folder')).toBeInTheDocument()
+        })
+      })
+    })
+
+    describe('handleBreadCrumbClick', () => {
+      it('should call onBreadcrumbClick and close menu', async () => {
+        // Arrange
+        const mockOnBreadcrumbClick = jest.fn()
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1'],
+          onBreadcrumbClick: mockOnBreadcrumbClick,
+        })
+        render(<Dropdown {...props} />)
+
+        // Act - Open dropdown
+        fireEvent.click(screen.getByRole('button'))
+
+        await waitFor(() => {
+          expect(screen.getByText('folder1')).toBeInTheDocument()
+        })
+
+        // Click on breadcrumb
+        fireEvent.click(screen.getByText('folder1'))
+
+        // Assert
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledTimes(1)
+
+        // Menu should close
+        await waitFor(() => {
+          expect(screen.queryByText('folder1')).not.toBeInTheDocument()
+        })
+      })
+
+      it('should pass correct index to onBreadcrumbClick for each item', async () => {
+        // Arrange
+        const mockOnBreadcrumbClick = jest.fn()
+        const props = createDefaultProps({
+          startIndex: 2,
+          breadcrumbs: ['folder1', 'folder2', 'folder3'],
+          onBreadcrumbClick: mockOnBreadcrumbClick,
+        })
+        render(<Dropdown {...props} />)
+
+        // Act - Open dropdown and click first item
+        fireEvent.click(screen.getByRole('button'))
+
+        await waitFor(() => {
+          expect(screen.getByText('folder1')).toBeInTheDocument()
+        })
+
+        fireEvent.click(screen.getByText('folder1'))
+
+        // Assert - Index should be startIndex (2) + item index (0) = 2
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(2)
+      })
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization Tests
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Assert - Dropdown component should be memoized
+      expect(Dropdown).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+
+    it('should maintain stable callback after rerender with same props', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        breadcrumbs: ['folder'],
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+      const { rerender } = render(<Dropdown {...props} />)
+
+      // Act - Open and click
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('folder'))
+
+      // Rerender with same props and click again
+      rerender(<Dropdown {...props} />)
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('folder'))
+
+      // Assert
+      expect(mockOnBreadcrumbClick).toHaveBeenCalledTimes(2)
+    })
+
+    it('should update callback when onBreadcrumbClick prop changes', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick1 = jest.fn()
+      const mockOnBreadcrumbClick2 = jest.fn()
+      const props = createDefaultProps({
+        breadcrumbs: ['folder'],
+        onBreadcrumbClick: mockOnBreadcrumbClick1,
+      })
+      const { rerender } = render(<Dropdown {...props} />)
+
+      // Act - Open and click with first callback
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('folder'))
+
+      // Rerender with different callback
+      rerender(<Dropdown {...createDefaultProps({
+        breadcrumbs: ['folder'],
+        onBreadcrumbClick: mockOnBreadcrumbClick2,
+      })} />)
+
+      // Open and click with second callback
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('folder'))
+
+      // Assert
+      expect(mockOnBreadcrumbClick1).toHaveBeenCalledTimes(1)
+      expect(mockOnBreadcrumbClick2).toHaveBeenCalledTimes(1)
+    })
+
+    it('should not re-render when props are the same', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const { rerender } = render(<Dropdown {...props} />)
+
+      // Act - Rerender with same props
+      rerender(<Dropdown {...props} />)
+
+      // Assert - Component should render without errors
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle rapid toggle clicks', async () => {
+      // Arrange
+      const props = createDefaultProps({ breadcrumbs: ['folder'] })
+      render(<Dropdown {...props} />)
+      const button = screen.getByRole('button')
+
+      // Act - Rapid clicks
+      fireEvent.click(button)
+      fireEvent.click(button)
+      fireEvent.click(button)
+
+      // Assert - Should handle gracefully (open after odd number of clicks)
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+    })
+
+    it('should handle very long folder names', async () => {
+      // Arrange
+      const longName = 'a'.repeat(100)
+      const props = createDefaultProps({
+        breadcrumbs: [longName],
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      await waitFor(() => {
+        expect(screen.getByText(longName)).toBeInTheDocument()
+      })
+    })
+
+    it('should handle many breadcrumbs', async () => {
+      // Arrange
+      const manyBreadcrumbs = Array.from({ length: 20 }, (_, i) => `folder-${i}`)
+      const props = createDefaultProps({
+        breadcrumbs: manyBreadcrumbs,
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - First and last items should be visible
+      await waitFor(() => {
+        expect(screen.getByText('folder-0')).toBeInTheDocument()
+        expect(screen.getByText('folder-19')).toBeInTheDocument()
+      })
+    })
+
+    it('should handle startIndex of 0', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        startIndex: 0,
+        breadcrumbs: ['folder'],
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('folder'))
+
+      // Assert
+      expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(0)
+    })
+
+    it('should handle large startIndex values', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        startIndex: 999,
+        breadcrumbs: ['folder'],
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('folder'))
+
+      // Assert
+      expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(999)
+    })
+
+    it('should handle breadcrumbs with whitespace-only names', async () => {
+      // Arrange
+      const props = createDefaultProps({
+        breadcrumbs: ['   ', 'normal-folder'],
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      await waitFor(() => {
+        expect(screen.getByText('normal-folder')).toBeInTheDocument()
+      })
+    })
+
+    it('should handle breadcrumbs with empty string', async () => {
+      // Arrange
+      const props = createDefaultProps({
+        breadcrumbs: ['', 'folder'],
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      await waitFor(() => {
+        expect(screen.getByText('folder')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { startIndex: 0, breadcrumbs: ['a'], expectedIndex: 0 },
+      { startIndex: 1, breadcrumbs: ['a'], expectedIndex: 1 },
+      { startIndex: 5, breadcrumbs: ['a'], expectedIndex: 5 },
+      { startIndex: 10, breadcrumbs: ['a', 'b'], expectedIndex: 10 },
+    ])('should handle startIndex=$startIndex correctly', async ({ startIndex, breadcrumbs, expectedIndex }) => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        startIndex,
+        breadcrumbs,
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText(breadcrumbs[0])).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText(breadcrumbs[0]))
+
+      // Assert
+      expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(expectedIndex)
+    })
+
+    it.each([
+      { breadcrumbs: [], description: 'empty array' },
+      { breadcrumbs: ['single'], description: 'single item' },
+      { breadcrumbs: ['a', 'b'], description: 'two items' },
+      { breadcrumbs: ['a', 'b', 'c', 'd', 'e'], description: 'five items' },
+    ])('should render correctly with $description breadcrumbs', async ({ breadcrumbs }) => {
+      // Arrange
+      const props = createDefaultProps({ breadcrumbs })
+
+      // Act
+      render(<Dropdown {...props} />)
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - Should render without errors
+      await waitFor(() => {
+        if (breadcrumbs.length > 0)
+          expect(screen.getByText(breadcrumbs[0])).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Integration Tests (Menu and Item)
+  // ==========================================
+  describe('Integration with Menu and Item', () => {
+    it('should render all menu items with correct content', async () => {
+      // Arrange
+      const props = createDefaultProps({
+        breadcrumbs: ['Documents', 'Projects', 'Archive'],
+      })
+      render(<Dropdown {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      await waitFor(() => {
+        expect(screen.getByText('Documents')).toBeInTheDocument()
+        expect(screen.getByText('Projects')).toBeInTheDocument()
+        expect(screen.getByText('Archive')).toBeInTheDocument()
+      })
+    })
+
+    it('should handle click on any menu item', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        startIndex: 0,
+        breadcrumbs: ['first', 'second', 'third'],
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+      render(<Dropdown {...props} />)
+
+      // Act - Open and click on second item
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('second')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('second'))
+
+      // Assert - Index should be 1 (second item)
+      expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(1)
+    })
+
+    it('should close menu after any item click', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        breadcrumbs: ['item1', 'item2', 'item3'],
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+      render(<Dropdown {...props} />)
+
+      // Act - Open and click on middle item
+      fireEvent.click(screen.getByRole('button'))
+      await waitFor(() => {
+        expect(screen.getByText('item2')).toBeInTheDocument()
+      })
+      fireEvent.click(screen.getByText('item2'))
+
+      // Assert - Menu should close
+      await waitFor(() => {
+        expect(screen.queryByText('item1')).not.toBeInTheDocument()
+        expect(screen.queryByText('item2')).not.toBeInTheDocument()
+        expect(screen.queryByText('item3')).not.toBeInTheDocument()
+      })
+    })
+
+    it('should correctly calculate index for each item based on startIndex', async () => {
+      // Arrange
+      const mockOnBreadcrumbClick = jest.fn()
+      const props = createDefaultProps({
+        startIndex: 3,
+        breadcrumbs: ['folder-a', 'folder-b', 'folder-c'],
+        onBreadcrumbClick: mockOnBreadcrumbClick,
+      })
+
+      // Test clicking each item
+      for (let i = 0; i < 3; i++) {
+        mockOnBreadcrumbClick.mockClear()
+        const { unmount } = render(<Dropdown {...props} />)
+
+        fireEvent.click(screen.getByRole('button'))
+        await waitFor(() => {
+          expect(screen.getByText(`folder-${String.fromCharCode(97 + i)}`)).toBeInTheDocument()
+        })
+        fireEvent.click(screen.getByText(`folder-${String.fromCharCode(97 + i)}`))
+
+        expect(mockOnBreadcrumbClick).toHaveBeenCalledWith(3 + i)
+        unmount()
+      }
+    })
+  })
+
+  // ==========================================
+  // Accessibility Tests
+  // ==========================================
+  describe('Accessibility', () => {
+    it('should render trigger as button element', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Dropdown {...props} />)
+
+      // Assert
+      const button = screen.getByRole('button')
+      expect(button).toBeInTheDocument()
+      expect(button.tagName).toBe('BUTTON')
+    })
+
+    it('should have type="button" attribute', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Dropdown {...props} />)
+
+      // Assert
+      const button = screen.getByRole('button')
+      expect(button).toHaveAttribute('type', 'button')
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/breadcrumbs/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/breadcrumbs/index.spec.tsx
new file mode 100644
index 0000000000..2ccb460a06
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/breadcrumbs/index.spec.tsx
@@ -0,0 +1,1079 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import React from 'react'
+import Breadcrumbs from './index'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock store - context provider requires mocking
+const mockStoreState = {
+  hasBucket: false,
+  breadcrumbs: [] as string[],
+  prefix: [] as string[],
+  setOnlineDriveFileList: jest.fn(),
+  setSelectedFileIds: jest.fn(),
+  setBreadcrumbs: jest.fn(),
+  setPrefix: jest.fn(),
+  setBucket: jest.fn(),
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../../../../store', () => ({
+  useDataSourceStore: () => mockDataSourceStore,
+  useDataSourceStoreWithSelector: (selector: (s: typeof mockStoreState) => unknown) => selector(mockStoreState),
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+type BreadcrumbsProps = React.ComponentProps<typeof Breadcrumbs>
+
+const createDefaultProps = (overrides?: Partial<BreadcrumbsProps>): BreadcrumbsProps => ({
+  breadcrumbs: [],
+  keywords: '',
+  bucket: '',
+  searchResultsLength: 0,
+  isInPipeline: false,
+  ...overrides,
+})
+
+// ==========================================
+// Helper Functions
+// ==========================================
+const resetMockStoreState = () => {
+  mockStoreState.hasBucket = false
+  mockStoreState.breadcrumbs = []
+  mockStoreState.prefix = []
+  mockStoreState.setOnlineDriveFileList = jest.fn()
+  mockStoreState.setSelectedFileIds = jest.fn()
+  mockStoreState.setBreadcrumbs = jest.fn()
+  mockStoreState.setPrefix = jest.fn()
+  mockStoreState.setBucket = jest.fn()
+}
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('Breadcrumbs', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+    resetMockStoreState()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert - Container should be in the document
+      const container = document.querySelector('.flex.grow')
+      expect(container).toBeInTheDocument()
+    })
+
+    it('should render with correct container styles', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Breadcrumbs {...props} />)
+
+      // Assert
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass('flex')
+      expect(wrapper).toHaveClass('grow')
+      expect(wrapper).toHaveClass('items-center')
+      expect(wrapper).toHaveClass('overflow-hidden')
+    })
+
+    describe('Search Results Display', () => {
+      it('should show search results when keywords and searchResultsLength > 0', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'test',
+          searchResultsLength: 5,
+          breadcrumbs: ['folder1'],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Search result text should be displayed
+        expect(screen.getByText(/datasetPipeline\.onlineDrive\.breadcrumbs\.searchResult/)).toBeInTheDocument()
+      })
+
+      it('should not show search results when keywords is empty', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: '',
+          searchResultsLength: 5,
+          breadcrumbs: ['folder1'],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.queryByText(/searchResult/)).not.toBeInTheDocument()
+      })
+
+      it('should not show search results when searchResultsLength is 0', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'test',
+          searchResultsLength: 0,
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.queryByText(/searchResult/)).not.toBeInTheDocument()
+      })
+
+      it('should use bucket as folderName when breadcrumbs is empty', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'test',
+          searchResultsLength: 5,
+          breadcrumbs: [],
+          bucket: 'my-bucket',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should use bucket name in search result
+        expect(screen.getByText(/searchResult.*my-bucket/i)).toBeInTheDocument()
+      })
+
+      it('should use last breadcrumb as folderName when breadcrumbs exist', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'test',
+          searchResultsLength: 5,
+          breadcrumbs: ['folder1', 'folder2'],
+          bucket: 'my-bucket',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should use last breadcrumb in search result
+        expect(screen.getByText(/searchResult.*folder2/i)).toBeInTheDocument()
+      })
+    })
+
+    describe('All Buckets Title Display', () => {
+      it('should show all buckets title when hasBucket=true, bucket is empty, and no breadcrumbs', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          breadcrumbs: [],
+          bucket: '',
+          keywords: '',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('datasetPipeline.onlineDrive.breadcrumbs.allBuckets')).toBeInTheDocument()
+      })
+
+      it('should not show all buckets title when breadcrumbs exist', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1'],
+          bucket: '',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.queryByText('datasetPipeline.onlineDrive.breadcrumbs.allBuckets')).not.toBeInTheDocument()
+      })
+
+      it('should not show all buckets title when bucket is set', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          breadcrumbs: [],
+          bucket: 'my-bucket',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should show bucket name instead
+        expect(screen.queryByText('datasetPipeline.onlineDrive.breadcrumbs.allBuckets')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('Bucket Component Display', () => {
+      it('should render Bucket component when hasBucket and bucket are set', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'test-bucket',
+          breadcrumbs: [],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Bucket name should be displayed
+        expect(screen.getByText('test-bucket')).toBeInTheDocument()
+      })
+
+      it('should not render Bucket when hasBucket is false', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          bucket: 'test-bucket',
+          breadcrumbs: [],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Bucket should not be displayed, Drive should be shown instead
+        expect(screen.queryByText('test-bucket')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('Drive Component Display', () => {
+      it('should render Drive component when hasBucket is false', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: [],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - "All Files" should be displayed
+        expect(screen.getByText('datasetPipeline.onlineDrive.breadcrumbs.allFiles')).toBeInTheDocument()
+      })
+
+      it('should not render Drive component when hasBucket is true', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'test-bucket',
+          breadcrumbs: [],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.queryByText('datasetPipeline.onlineDrive.breadcrumbs.allFiles')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('BreadcrumbItem Display', () => {
+      it('should render all breadcrumbs when not collapsed', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2'],
+          isInPipeline: false,
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('folder1')).toBeInTheDocument()
+        expect(screen.getByText('folder2')).toBeInTheDocument()
+      })
+
+      it('should render last breadcrumb as active', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2'],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Last breadcrumb should have active styles
+        const lastBreadcrumb = screen.getByText('folder2')
+        expect(lastBreadcrumb).toHaveClass('system-sm-medium')
+        expect(lastBreadcrumb).toHaveClass('text-text-secondary')
+      })
+
+      it('should render non-last breadcrumbs with tertiary styles', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2'],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - First breadcrumb should have tertiary styles
+        const firstBreadcrumb = screen.getByText('folder1')
+        expect(firstBreadcrumb).toHaveClass('system-sm-regular')
+        expect(firstBreadcrumb).toHaveClass('text-text-tertiary')
+      })
+    })
+
+    describe('Collapsed Breadcrumbs (Dropdown)', () => {
+      it('should show dropdown when breadcrumbs exceed displayBreadcrumbNum', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3', 'folder4'],
+          isInPipeline: false, // displayBreadcrumbNum = 3
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Dropdown trigger (more button) should be present
+        expect(screen.getByRole('button', { name: '' })).toBeInTheDocument()
+      })
+
+      it('should not show dropdown when breadcrumbs do not exceed displayBreadcrumbNum', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2'],
+          isInPipeline: false, // displayBreadcrumbNum = 3
+        })
+
+        // Act
+        const { container } = render(<Breadcrumbs {...props} />)
+
+        // Assert - Should not have dropdown, just regular breadcrumbs
+        // All breadcrumbs should be directly visible
+        expect(screen.getByText('folder1')).toBeInTheDocument()
+        expect(screen.getByText('folder2')).toBeInTheDocument()
+        // Count buttons - should be 3 (allFiles + folder1 + folder2)
+        const buttons = container.querySelectorAll('button')
+        expect(buttons.length).toBe(3)
+      })
+
+      it('should show prefix breadcrumbs and last breadcrumb when collapsed', async () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3', 'folder4', 'folder5'],
+          isInPipeline: false, // displayBreadcrumbNum = 3
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - First breadcrumb and last breadcrumb should be visible
+        expect(screen.getByText('folder1')).toBeInTheDocument()
+        expect(screen.getByText('folder2')).toBeInTheDocument()
+        expect(screen.getByText('folder5')).toBeInTheDocument()
+        // Middle breadcrumbs should be in dropdown
+        expect(screen.queryByText('folder3')).not.toBeInTheDocument()
+        expect(screen.queryByText('folder4')).not.toBeInTheDocument()
+      })
+
+      it('should show collapsed breadcrumbs in dropdown when clicked', async () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3', 'folder4', 'folder5'],
+          isInPipeline: false,
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click on dropdown trigger (the ... button)
+        const dropdownTrigger = screen.getAllByRole('button').find(btn => btn.querySelector('svg'))
+        if (dropdownTrigger)
+          fireEvent.click(dropdownTrigger)
+
+        // Assert - Collapsed breadcrumbs should be visible
+        await waitFor(() => {
+          expect(screen.getByText('folder3')).toBeInTheDocument()
+          expect(screen.getByText('folder4')).toBeInTheDocument()
+        })
+      })
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('breadcrumbs prop', () => {
+      it('should handle empty breadcrumbs array', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({ breadcrumbs: [] })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Only Drive should be visible
+        expect(screen.getByText('datasetPipeline.onlineDrive.breadcrumbs.allFiles')).toBeInTheDocument()
+      })
+
+      it('should handle single breadcrumb', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({ breadcrumbs: ['single-folder'] })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('single-folder')).toBeInTheDocument()
+      })
+
+      it('should handle breadcrumbs with special characters', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder [1]', 'folder (copy)'],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('folder [1]')).toBeInTheDocument()
+        expect(screen.getByText('folder (copy)')).toBeInTheDocument()
+      })
+
+      it('should handle breadcrumbs with unicode characters', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['文件夹', 'フォルダ'],
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('文件夹')).toBeInTheDocument()
+        expect(screen.getByText('フォルダ')).toBeInTheDocument()
+      })
+    })
+
+    describe('keywords prop', () => {
+      it('should show search results when keywords is non-empty with results', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'search-term',
+          searchResultsLength: 10,
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText(/searchResult/)).toBeInTheDocument()
+      })
+
+      it('should handle whitespace keywords', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: '   ',
+          searchResultsLength: 5,
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Whitespace is truthy, so should show search results
+        expect(screen.getByText(/searchResult/)).toBeInTheDocument()
+      })
+    })
+
+    describe('bucket prop', () => {
+      it('should display bucket name when hasBucket and bucket are set', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'production-bucket',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('production-bucket')).toBeInTheDocument()
+      })
+
+      it('should handle bucket with special characters', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'bucket-v2.0_backup',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText('bucket-v2.0_backup')).toBeInTheDocument()
+      })
+    })
+
+    describe('searchResultsLength prop', () => {
+      it('should handle zero searchResultsLength', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'test',
+          searchResultsLength: 0,
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should not show search results
+        expect(screen.queryByText(/searchResult/)).not.toBeInTheDocument()
+      })
+
+      it('should handle large searchResultsLength', () => {
+        // Arrange
+        const props = createDefaultProps({
+          keywords: 'test',
+          searchResultsLength: 10000,
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert
+        expect(screen.getByText(/searchResult.*10000/)).toBeInTheDocument()
+      })
+    })
+
+    describe('isInPipeline prop', () => {
+      it('should use displayBreadcrumbNum=2 when isInPipeline is true', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3'],
+          isInPipeline: true, // displayBreadcrumbNum = 2
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should collapse because 3 > 2
+        // Dropdown should be present
+        const buttons = screen.getAllByRole('button')
+        const hasDropdownTrigger = buttons.some(btn => btn.querySelector('svg'))
+        expect(hasDropdownTrigger).toBe(true)
+      })
+
+      it('should use displayBreadcrumbNum=3 when isInPipeline is false', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3'],
+          isInPipeline: false, // displayBreadcrumbNum = 3
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should NOT collapse because 3 <= 3
+        expect(screen.getByText('folder1')).toBeInTheDocument()
+        expect(screen.getByText('folder2')).toBeInTheDocument()
+        expect(screen.getByText('folder3')).toBeInTheDocument()
+      })
+
+      it('should reduce displayBreadcrumbNum by 1 when bucket is set', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3'],
+          bucket: 'my-bucket',
+          isInPipeline: false, // displayBreadcrumbNum = 3 - 1 = 2
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - Should collapse because 3 > 2
+        const buttons = screen.getAllByRole('button')
+        const hasDropdownTrigger = buttons.some(btn => btn.querySelector('svg'))
+        expect(hasDropdownTrigger).toBe(true)
+      })
+    })
+  })
+
+  // ==========================================
+  // Memoization Logic and Dependencies Tests
+  // ==========================================
+  describe('Memoization Logic and Dependencies', () => {
+    describe('displayBreadcrumbNum useMemo', () => {
+      it('should calculate correct value when isInPipeline=false and no bucket', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['a', 'b', 'c', 'd'],
+          isInPipeline: false,
+          bucket: '',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - displayBreadcrumbNum = 3, so 4 breadcrumbs should collapse
+        // First 2 visible, dropdown, last 1 visible
+        expect(screen.getByText('a')).toBeInTheDocument()
+        expect(screen.getByText('b')).toBeInTheDocument()
+        expect(screen.getByText('d')).toBeInTheDocument()
+        expect(screen.queryByText('c')).not.toBeInTheDocument()
+      })
+
+      it('should calculate correct value when isInPipeline=true and no bucket', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['a', 'b', 'c'],
+          isInPipeline: true,
+          bucket: '',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - displayBreadcrumbNum = 2, so 3 breadcrumbs should collapse
+        expect(screen.getByText('a')).toBeInTheDocument()
+        expect(screen.getByText('c')).toBeInTheDocument()
+        expect(screen.queryByText('b')).not.toBeInTheDocument()
+      })
+
+      it('should calculate correct value when isInPipeline=false and bucket exists', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          breadcrumbs: ['a', 'b', 'c'],
+          isInPipeline: false,
+          bucket: 'my-bucket',
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - displayBreadcrumbNum = 3 - 1 = 2, so 3 breadcrumbs should collapse
+        expect(screen.getByText('a')).toBeInTheDocument()
+        expect(screen.getByText('c')).toBeInTheDocument()
+        expect(screen.queryByText('b')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('breadcrumbsConfig useMemo', () => {
+      it('should correctly split breadcrumbs when collapsed', async () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['f1', 'f2', 'f3', 'f4', 'f5'],
+          isInPipeline: false, // displayBreadcrumbNum = 3
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click dropdown to see collapsed items
+        const dropdownTrigger = screen.getAllByRole('button').find(btn => btn.querySelector('svg'))
+        if (dropdownTrigger)
+          fireEvent.click(dropdownTrigger)
+
+        // Assert
+        // prefixBreadcrumbs = ['f1', 'f2']
+        // collapsedBreadcrumbs = ['f3', 'f4']
+        // lastBreadcrumb = 'f5'
+        expect(screen.getByText('f1')).toBeInTheDocument()
+        expect(screen.getByText('f2')).toBeInTheDocument()
+        expect(screen.getByText('f5')).toBeInTheDocument()
+        await waitFor(() => {
+          expect(screen.getByText('f3')).toBeInTheDocument()
+          expect(screen.getByText('f4')).toBeInTheDocument()
+        })
+      })
+
+      it('should not collapse when breadcrumbs.length <= displayBreadcrumbNum', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['f1', 'f2'],
+          isInPipeline: false, // displayBreadcrumbNum = 3
+        })
+
+        // Act
+        render(<Breadcrumbs {...props} />)
+
+        // Assert - All breadcrumbs should be visible
+        expect(screen.getByText('f1')).toBeInTheDocument()
+        expect(screen.getByText('f2')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Event Handlers Tests
+  // ==========================================
+  describe('Callback Stability and Event Handlers', () => {
+    describe('handleBackToBucketList', () => {
+      it('should reset store state when called', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'my-bucket',
+          breadcrumbs: [],
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click bucket icon button (first button in Bucket component)
+        const buttons = screen.getAllByRole('button')
+        fireEvent.click(buttons[0]) // Bucket icon button
+
+        // Assert
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalledWith([])
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith([])
+        expect(mockStoreState.setBucket).toHaveBeenCalledWith('')
+        expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith([])
+        expect(mockStoreState.setPrefix).toHaveBeenCalledWith([])
+      })
+    })
+
+    describe('handleClickBucketName', () => {
+      it('should reset breadcrumbs and prefix when bucket name is clicked', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'my-bucket',
+          breadcrumbs: ['folder1'],
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click bucket name button
+        const bucketButton = screen.getByText('my-bucket')
+        fireEvent.click(bucketButton)
+
+        // Assert
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalledWith([])
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith([])
+        expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith([])
+        expect(mockStoreState.setPrefix).toHaveBeenCalledWith([])
+      })
+
+      it('should not call handler when bucket is disabled (no breadcrumbs)', () => {
+        // Arrange
+        mockStoreState.hasBucket = true
+        const props = createDefaultProps({
+          bucket: 'my-bucket',
+          breadcrumbs: [], // disabled when no breadcrumbs
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click bucket name button (should be disabled)
+        const bucketButton = screen.getByText('my-bucket')
+        fireEvent.click(bucketButton)
+
+        // Assert - Store methods should NOT be called because button is disabled
+        expect(mockStoreState.setOnlineDriveFileList).not.toHaveBeenCalled()
+      })
+    })
+
+    describe('handleBackToRoot', () => {
+      it('should reset state when Drive button is clicked', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1'],
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click "All Files" button
+        const driveButton = screen.getByText('datasetPipeline.onlineDrive.breadcrumbs.allFiles')
+        fireEvent.click(driveButton)
+
+        // Assert
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalledWith([])
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith([])
+        expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith([])
+        expect(mockStoreState.setPrefix).toHaveBeenCalledWith([])
+      })
+    })
+
+    describe('handleClickBreadcrumb', () => {
+      it('should slice breadcrumbs and prefix when breadcrumb is clicked', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        mockStoreState.breadcrumbs = ['folder1', 'folder2', 'folder3']
+        mockStoreState.prefix = ['prefix1', 'prefix2', 'prefix3']
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2', 'folder3'],
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click on first breadcrumb (index 0)
+        const firstBreadcrumb = screen.getByText('folder1')
+        fireEvent.click(firstBreadcrumb)
+
+        // Assert - Should slice to index 0 + 1 = 1
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalledWith([])
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith([])
+        expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith(['folder1'])
+        expect(mockStoreState.setPrefix).toHaveBeenCalledWith(['prefix1'])
+      })
+
+      it('should not call handler when last breadcrumb is clicked (disabled)', () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        const props = createDefaultProps({
+          breadcrumbs: ['folder1', 'folder2'],
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Click on last breadcrumb (should be disabled)
+        const lastBreadcrumb = screen.getByText('folder2')
+        fireEvent.click(lastBreadcrumb)
+
+        // Assert - Store methods should NOT be called
+        expect(mockStoreState.setBreadcrumbs).not.toHaveBeenCalled()
+      })
+
+      it('should handle click on collapsed breadcrumb from dropdown', async () => {
+        // Arrange
+        mockStoreState.hasBucket = false
+        mockStoreState.breadcrumbs = ['f1', 'f2', 'f3', 'f4', 'f5']
+        mockStoreState.prefix = ['p1', 'p2', 'p3', 'p4', 'p5']
+        const props = createDefaultProps({
+          breadcrumbs: ['f1', 'f2', 'f3', 'f4', 'f5'],
+          isInPipeline: false,
+        })
+        render(<Breadcrumbs {...props} />)
+
+        // Act - Open dropdown and click on collapsed breadcrumb (f3, index=2)
+        const dropdownTrigger = screen.getAllByRole('button').find(btn => btn.querySelector('svg'))
+        if (dropdownTrigger)
+          fireEvent.click(dropdownTrigger)
+
+        await waitFor(() => {
+          expect(screen.getByText('f3')).toBeInTheDocument()
+        })
+
+        fireEvent.click(screen.getByText('f3'))
+
+        // Assert - Should slice to index 2 + 1 = 3
+        expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith(['f1', 'f2', 'f3'])
+        expect(mockStoreState.setPrefix).toHaveBeenCalledWith(['p1', 'p2', 'p3'])
+      })
+    })
+  })
+
+  // ==========================================
+  // Component Memoization Tests
+  // ==========================================
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Assert
+      expect(Breadcrumbs).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+
+    it('should not re-render when props are the same', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const { rerender } = render(<Breadcrumbs {...props} />)
+
+      // Act - Rerender with same props
+      rerender(<Breadcrumbs {...props} />)
+
+      // Assert - Component should render without errors
+      const container = document.querySelector('.flex.grow')
+      expect(container).toBeInTheDocument()
+    })
+
+    it('should re-render when breadcrumbs change', () => {
+      // Arrange
+      mockStoreState.hasBucket = false
+      const props = createDefaultProps({ breadcrumbs: ['folder1'] })
+      const { rerender } = render(<Breadcrumbs {...props} />)
+      expect(screen.getByText('folder1')).toBeInTheDocument()
+
+      // Act - Rerender with different breadcrumbs
+      rerender(<Breadcrumbs {...createDefaultProps({ breadcrumbs: ['folder2'] })} />)
+
+      // Assert
+      expect(screen.getByText('folder2')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling Tests
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle very long breadcrumb names', () => {
+      // Arrange
+      mockStoreState.hasBucket = false
+      const longName = 'a'.repeat(100)
+      const props = createDefaultProps({
+        breadcrumbs: [longName],
+      })
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert
+      expect(screen.getByText(longName)).toBeInTheDocument()
+    })
+
+    it('should handle many breadcrumbs', async () => {
+      // Arrange
+      mockStoreState.hasBucket = false
+      const manyBreadcrumbs = Array.from({ length: 20 }, (_, i) => `folder-${i}`)
+      const props = createDefaultProps({
+        breadcrumbs: manyBreadcrumbs,
+      })
+      render(<Breadcrumbs {...props} />)
+
+      // Act - Open dropdown
+      const dropdownTrigger = screen.getAllByRole('button').find(btn => btn.querySelector('svg'))
+      if (dropdownTrigger)
+        fireEvent.click(dropdownTrigger)
+
+      // Assert - First, last, and collapsed should be accessible
+      expect(screen.getByText('folder-0')).toBeInTheDocument()
+      expect(screen.getByText('folder-1')).toBeInTheDocument()
+      expect(screen.getByText('folder-19')).toBeInTheDocument()
+      await waitFor(() => {
+        expect(screen.getByText('folder-2')).toBeInTheDocument()
+      })
+    })
+
+    it('should handle empty bucket string', () => {
+      // Arrange
+      mockStoreState.hasBucket = true
+      const props = createDefaultProps({
+        bucket: '',
+        breadcrumbs: [],
+      })
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert - Should show all buckets title
+      expect(screen.getByText('datasetPipeline.onlineDrive.breadcrumbs.allBuckets')).toBeInTheDocument()
+    })
+
+    it('should handle breadcrumb with only whitespace', () => {
+      // Arrange
+      mockStoreState.hasBucket = false
+      const props = createDefaultProps({
+        breadcrumbs: ['   ', 'normal-folder'],
+      })
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert - Both should be rendered
+      expect(screen.getByText('normal-folder')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { hasBucket: true, bucket: 'b1', breadcrumbs: [], expected: 'bucket visible' },
+      { hasBucket: true, bucket: '', breadcrumbs: [], expected: 'all buckets title' },
+      { hasBucket: false, bucket: '', breadcrumbs: [], expected: 'all files' },
+      { hasBucket: false, bucket: '', breadcrumbs: ['f1'], expected: 'drive with breadcrumb' },
+    ])('should render correctly for $expected', ({ hasBucket, bucket, breadcrumbs }) => {
+      // Arrange
+      mockStoreState.hasBucket = hasBucket
+      const props = createDefaultProps({ bucket, breadcrumbs })
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert - Component should render without errors
+      const container = document.querySelector('.flex.grow')
+      expect(container).toBeInTheDocument()
+    })
+
+    it.each([
+      { isInPipeline: true, bucket: '', expectedNum: 2 },
+      { isInPipeline: false, bucket: '', expectedNum: 3 },
+      { isInPipeline: true, bucket: 'b', expectedNum: 1 },
+      { isInPipeline: false, bucket: 'b', expectedNum: 2 },
+    ])('should calculate displayBreadcrumbNum=$expectedNum when isInPipeline=$isInPipeline and bucket=$bucket', ({ isInPipeline, bucket, expectedNum }) => {
+      // Arrange
+      mockStoreState.hasBucket = !!bucket
+      const breadcrumbs = Array.from({ length: expectedNum + 2 }, (_, i) => `f${i}`)
+      const props = createDefaultProps({ isInPipeline, bucket, breadcrumbs })
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert - Should collapse because breadcrumbs.length > expectedNum
+      const buttons = screen.getAllByRole('button')
+      const hasDropdownTrigger = buttons.some(btn => btn.querySelector('svg'))
+      expect(hasDropdownTrigger).toBe(true)
+    })
+  })
+
+  // ==========================================
+  // Integration Tests
+  // ==========================================
+  describe('Integration', () => {
+    it('should handle full navigation flow: bucket -> folders -> navigation back', () => {
+      // Arrange
+      mockStoreState.hasBucket = true
+      mockStoreState.breadcrumbs = ['folder1', 'folder2']
+      mockStoreState.prefix = ['prefix1', 'prefix2']
+      const props = createDefaultProps({
+        bucket: 'my-bucket',
+        breadcrumbs: ['folder1', 'folder2'],
+      })
+      render(<Breadcrumbs {...props} />)
+
+      // Act - Click on first folder to navigate back
+      const firstFolder = screen.getByText('folder1')
+      fireEvent.click(firstFolder)
+
+      // Assert
+      expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith(['folder1'])
+      expect(mockStoreState.setPrefix).toHaveBeenCalledWith(['prefix1'])
+    })
+
+    it('should handle search result display with navigation elements hidden', () => {
+      // Arrange
+      mockStoreState.hasBucket = true
+      const props = createDefaultProps({
+        keywords: 'test',
+        searchResultsLength: 5,
+        bucket: 'my-bucket',
+        breadcrumbs: ['folder1'],
+      })
+
+      // Act
+      render(<Breadcrumbs {...props} />)
+
+      // Assert - Search result should be shown, navigation elements should be hidden
+      expect(screen.getByText(/searchResult/)).toBeInTheDocument()
+      expect(screen.queryByText('my-bucket')).not.toBeInTheDocument()
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/index.spec.tsx
new file mode 100644
index 0000000000..3982fd4243
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/header/index.spec.tsx
@@ -0,0 +1,727 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import React from 'react'
+import Header from './index'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock store - required by Breadcrumbs component
+const mockStoreState = {
+  hasBucket: false,
+  setOnlineDriveFileList: jest.fn(),
+  setSelectedFileIds: jest.fn(),
+  setBreadcrumbs: jest.fn(),
+  setPrefix: jest.fn(),
+  setBucket: jest.fn(),
+  breadcrumbs: [],
+  prefix: [],
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../../../store', () => ({
+  useDataSourceStore: () => mockDataSourceStore,
+  useDataSourceStoreWithSelector: (selector: (s: typeof mockStoreState) => unknown) => selector(mockStoreState),
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+type HeaderProps = React.ComponentProps<typeof Header>
+
+const createDefaultProps = (overrides?: Partial<HeaderProps>): HeaderProps => ({
+  breadcrumbs: [],
+  inputValue: '',
+  keywords: '',
+  bucket: '',
+  searchResultsLength: 0,
+  handleInputChange: jest.fn(),
+  handleResetKeywords: jest.fn(),
+  isInPipeline: false,
+  ...overrides,
+})
+
+// ==========================================
+// Helper Functions
+// ==========================================
+const resetMockStoreState = () => {
+  mockStoreState.hasBucket = false
+  mockStoreState.setOnlineDriveFileList = jest.fn()
+  mockStoreState.setSelectedFileIds = jest.fn()
+  mockStoreState.setBreadcrumbs = jest.fn()
+  mockStoreState.setPrefix = jest.fn()
+  mockStoreState.setBucket = jest.fn()
+  mockStoreState.breadcrumbs = []
+  mockStoreState.prefix = []
+}
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('Header', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+    resetMockStoreState()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - search input should be visible
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should render with correct container styles', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Header {...props} />)
+
+      // Assert - container should have correct class names
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass('flex')
+      expect(wrapper).toHaveClass('items-center')
+      expect(wrapper).toHaveClass('gap-x-2')
+      expect(wrapper).toHaveClass('bg-components-panel-bg')
+      expect(wrapper).toHaveClass('p-1')
+      expect(wrapper).toHaveClass('pl-3')
+    })
+
+    it('should render Input component with correct props', () => {
+      // Arrange
+      const props = createDefaultProps({ inputValue: 'test-value' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toBeInTheDocument()
+      expect(input).toHaveValue('test-value')
+    })
+
+    it('should render Input with search icon', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Header {...props} />)
+
+      // Assert - Input should have search icon (RiSearchLine is rendered as svg)
+      const searchIcon = container.querySelector('svg.h-4.w-4')
+      expect(searchIcon).toBeInTheDocument()
+    })
+
+    it('should render Input with correct wrapper width', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Header {...props} />)
+
+      // Assert - Input wrapper should have w-[200px] class
+      const inputWrapper = container.querySelector('.w-\\[200px\\]')
+      expect(inputWrapper).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('inputValue prop', () => {
+      it('should display empty input when inputValue is empty string', () => {
+        // Arrange
+        const props = createDefaultProps({ inputValue: '' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        expect(input).toHaveValue('')
+      })
+
+      it('should display input value correctly', () => {
+        // Arrange
+        const props = createDefaultProps({ inputValue: 'search-query' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        expect(input).toHaveValue('search-query')
+      })
+
+      it('should handle special characters in inputValue', () => {
+        // Arrange
+        const specialChars = 'test[file].txt (copy)'
+        const props = createDefaultProps({ inputValue: specialChars })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        expect(input).toHaveValue(specialChars)
+      })
+
+      it('should handle unicode characters in inputValue', () => {
+        // Arrange
+        const unicodeValue = '文件搜索 日本語'
+        const props = createDefaultProps({ inputValue: unicodeValue })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        expect(input).toHaveValue(unicodeValue)
+      })
+    })
+
+    describe('breadcrumbs prop', () => {
+      it('should render with empty breadcrumbs', () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: [] })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert - Component should render without errors
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+
+      it('should render with single breadcrumb', () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['folder1'] })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+
+      it('should render with multiple breadcrumbs', () => {
+        // Arrange
+        const props = createDefaultProps({ breadcrumbs: ['folder1', 'folder2', 'folder3'] })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+    })
+
+    describe('keywords prop', () => {
+      it('should pass keywords to Breadcrumbs', () => {
+        // Arrange
+        const props = createDefaultProps({ keywords: 'search-keyword' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert - keywords are passed through, component renders
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+    })
+
+    describe('bucket prop', () => {
+      it('should render with empty bucket', () => {
+        // Arrange
+        const props = createDefaultProps({ bucket: '' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+
+      it('should render with bucket value', () => {
+        // Arrange
+        const props = createDefaultProps({ bucket: 'my-bucket' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+    })
+
+    describe('searchResultsLength prop', () => {
+      it('should handle zero search results', () => {
+        // Arrange
+        const props = createDefaultProps({ searchResultsLength: 0 })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+
+      it('should handle positive search results', () => {
+        // Arrange
+        const props = createDefaultProps({ searchResultsLength: 10, keywords: 'test' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert - Breadcrumbs will show search results text when keywords exist and results > 0
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+
+      it('should handle large search results count', () => {
+        // Arrange
+        const props = createDefaultProps({ searchResultsLength: 1000, keywords: 'test' })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+    })
+
+    describe('isInPipeline prop', () => {
+      it('should render correctly when isInPipeline is false', () => {
+        // Arrange
+        const props = createDefaultProps({ isInPipeline: false })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+
+      it('should render correctly when isInPipeline is true', () => {
+        // Arrange
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Event Handlers Tests
+  // ==========================================
+  describe('Event Handlers', () => {
+    describe('handleInputChange', () => {
+      it('should call handleInputChange when input value changes', () => {
+        // Arrange
+        const mockHandleInputChange = jest.fn()
+        const props = createDefaultProps({ handleInputChange: mockHandleInputChange })
+        render(<Header {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'new-value' } })
+
+        // Assert
+        expect(mockHandleInputChange).toHaveBeenCalledTimes(1)
+        // Verify that onChange event was triggered (React's synthetic event structure)
+        expect(mockHandleInputChange.mock.calls[0][0]).toHaveProperty('type', 'change')
+      })
+
+      it('should call handleInputChange on each keystroke', () => {
+        // Arrange
+        const mockHandleInputChange = jest.fn()
+        const props = createDefaultProps({ handleInputChange: mockHandleInputChange })
+        render(<Header {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'a' } })
+        fireEvent.change(input, { target: { value: 'ab' } })
+        fireEvent.change(input, { target: { value: 'abc' } })
+
+        // Assert
+        expect(mockHandleInputChange).toHaveBeenCalledTimes(3)
+      })
+
+      it('should handle empty string input', () => {
+        // Arrange
+        const mockHandleInputChange = jest.fn()
+        const props = createDefaultProps({ inputValue: 'existing', handleInputChange: mockHandleInputChange })
+        render(<Header {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: '' } })
+
+        // Assert
+        expect(mockHandleInputChange).toHaveBeenCalledTimes(1)
+        expect(mockHandleInputChange.mock.calls[0][0]).toHaveProperty('type', 'change')
+      })
+
+      it('should handle whitespace-only input', () => {
+        // Arrange
+        const mockHandleInputChange = jest.fn()
+        const props = createDefaultProps({ handleInputChange: mockHandleInputChange })
+        render(<Header {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: '   ' } })
+
+        // Assert
+        expect(mockHandleInputChange).toHaveBeenCalledTimes(1)
+        expect(mockHandleInputChange.mock.calls[0][0]).toHaveProperty('type', 'change')
+      })
+    })
+
+    describe('handleResetKeywords', () => {
+      it('should call handleResetKeywords when clear icon is clicked', () => {
+        // Arrange
+        const mockHandleResetKeywords = jest.fn()
+        const props = createDefaultProps({
+          inputValue: 'to-clear',
+          handleResetKeywords: mockHandleResetKeywords,
+        })
+        const { container } = render(<Header {...props} />)
+
+        // Act - Find and click the clear icon container
+        const clearButton = container.querySelector('[class*="cursor-pointer"] svg[class*="h-3.5"]')?.parentElement
+        expect(clearButton).toBeInTheDocument()
+        fireEvent.click(clearButton!)
+
+        // Assert
+        expect(mockHandleResetKeywords).toHaveBeenCalledTimes(1)
+      })
+
+      it('should not show clear icon when inputValue is empty', () => {
+        // Arrange
+        const props = createDefaultProps({ inputValue: '' })
+        const { container } = render(<Header {...props} />)
+
+        // Act & Assert - Clear icon should not be visible
+        const clearIcon = container.querySelector('[class*="cursor-pointer"] svg[class*="h-3.5"]')
+        expect(clearIcon).not.toBeInTheDocument()
+      })
+
+      it('should show clear icon when inputValue is not empty', () => {
+        // Arrange
+        const props = createDefaultProps({ inputValue: 'some-value' })
+        const { container } = render(<Header {...props} />)
+
+        // Act & Assert - Clear icon should be visible
+        const clearIcon = container.querySelector('[class*="cursor-pointer"] svg[class*="h-3.5"]')
+        expect(clearIcon).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Component Memoization Tests
+  // ==========================================
+  describe('Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Assert - Header component should be memoized
+      expect(Header).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+
+    it('should not re-render when props are the same', () => {
+      // Arrange
+      const mockHandleInputChange = jest.fn()
+      const mockHandleResetKeywords = jest.fn()
+      const props = createDefaultProps({
+        handleInputChange: mockHandleInputChange,
+        handleResetKeywords: mockHandleResetKeywords,
+      })
+
+      // Act - Initial render
+      const { rerender } = render(<Header {...props} />)
+
+      // Rerender with same props
+      rerender(<Header {...props} />)
+
+      // Assert - Component renders without errors
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should re-render when inputValue changes', () => {
+      // Arrange
+      const props = createDefaultProps({ inputValue: 'initial' })
+      const { rerender } = render(<Header {...props} />)
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue('initial')
+
+      // Act - Rerender with different inputValue
+      const newProps = createDefaultProps({ inputValue: 'changed' })
+      rerender(<Header {...newProps} />)
+
+      // Assert - Input value should be updated
+      expect(input).toHaveValue('changed')
+    })
+
+    it('should re-render when breadcrumbs change', () => {
+      // Arrange
+      const props = createDefaultProps({ breadcrumbs: [] })
+      const { rerender } = render(<Header {...props} />)
+
+      // Act - Rerender with different breadcrumbs
+      const newProps = createDefaultProps({ breadcrumbs: ['folder1', 'folder2'] })
+      rerender(<Header {...newProps} />)
+
+      // Assert - Component renders without errors
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should re-render when keywords change', () => {
+      // Arrange
+      const props = createDefaultProps({ keywords: '' })
+      const { rerender } = render(<Header {...props} />)
+
+      // Act - Rerender with different keywords
+      const newProps = createDefaultProps({ keywords: 'search-term' })
+      rerender(<Header {...newProps} />)
+
+      // Assert - Component renders without errors
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle very long inputValue', () => {
+      // Arrange
+      const longValue = 'a'.repeat(500)
+      const props = createDefaultProps({ inputValue: longValue })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue(longValue)
+    })
+
+    it('should handle very long breadcrumb paths', () => {
+      // Arrange
+      const longBreadcrumbs = Array.from({ length: 20 }, (_, i) => `folder-${i}`)
+      const props = createDefaultProps({ breadcrumbs: longBreadcrumbs })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should handle breadcrumbs with special characters', () => {
+      // Arrange
+      const specialBreadcrumbs = ['folder [1]', 'folder (2)', 'folder-3.backup']
+      const props = createDefaultProps({ breadcrumbs: specialBreadcrumbs })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should handle breadcrumbs with unicode names', () => {
+      // Arrange
+      const unicodeBreadcrumbs = ['文件夹', 'フォルダ', 'Папка']
+      const props = createDefaultProps({ breadcrumbs: unicodeBreadcrumbs })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should handle bucket with special characters', () => {
+      // Arrange
+      const props = createDefaultProps({ bucket: 'my-bucket_2024.backup' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should pass the event object to handleInputChange callback', () => {
+      // Arrange
+      const mockHandleInputChange = jest.fn()
+      const props = createDefaultProps({ handleInputChange: mockHandleInputChange })
+      render(<Header {...props} />)
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+      // Act
+      fireEvent.change(input, { target: { value: 'test-value' } })
+
+      // Assert - Verify the event object is passed correctly
+      expect(mockHandleInputChange).toHaveBeenCalledTimes(1)
+      const eventArg = mockHandleInputChange.mock.calls[0][0]
+      expect(eventArg).toHaveProperty('type', 'change')
+      expect(eventArg).toHaveProperty('target')
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { isInPipeline: true, bucket: '' },
+      { isInPipeline: true, bucket: 'my-bucket' },
+      { isInPipeline: false, bucket: '' },
+      { isInPipeline: false, bucket: 'my-bucket' },
+    ])('should render correctly with isInPipeline=$isInPipeline and bucket=$bucket', (propVariation) => {
+      // Arrange
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it.each([
+      { keywords: '', searchResultsLength: 0, description: 'no search' },
+      { keywords: 'test', searchResultsLength: 0, description: 'search with no results' },
+      { keywords: 'test', searchResultsLength: 5, description: 'search with results' },
+      { keywords: '', searchResultsLength: 5, description: 'no keywords but has results count' },
+    ])('should render correctly with $description', ({ keywords, searchResultsLength }) => {
+      // Arrange
+      const props = createDefaultProps({ keywords, searchResultsLength })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it.each([
+      { breadcrumbs: [], inputValue: '', expected: 'empty state' },
+      { breadcrumbs: ['root'], inputValue: 'search', expected: 'single breadcrumb with search' },
+      { breadcrumbs: ['a', 'b', 'c'], inputValue: '', expected: 'multiple breadcrumbs no search' },
+      { breadcrumbs: ['a', 'b', 'c', 'd', 'e'], inputValue: 'query', expected: 'many breadcrumbs with search' },
+    ])('should handle $expected correctly', ({ breadcrumbs, inputValue }) => {
+      // Arrange
+      const props = createDefaultProps({ breadcrumbs, inputValue })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue(inputValue)
+    })
+  })
+
+  // ==========================================
+  // Integration with Child Components
+  // ==========================================
+  describe('Integration with Child Components', () => {
+    it('should pass all required props to Breadcrumbs', () => {
+      // Arrange
+      const props = createDefaultProps({
+        breadcrumbs: ['folder1', 'folder2'],
+        keywords: 'test-keyword',
+        bucket: 'test-bucket',
+        searchResultsLength: 10,
+        isInPipeline: true,
+      })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert - Component should render successfully, meaning props are passed correctly
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should pass correct props to Input component', () => {
+      // Arrange
+      const mockHandleInputChange = jest.fn()
+      const mockHandleResetKeywords = jest.fn()
+      const props = createDefaultProps({
+        inputValue: 'test-input',
+        handleInputChange: mockHandleInputChange,
+        handleResetKeywords: mockHandleResetKeywords,
+      })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue('test-input')
+
+      // Test onChange handler
+      fireEvent.change(input, { target: { value: 'new-value' } })
+      expect(mockHandleInputChange).toHaveBeenCalled()
+    })
+  })
+
+  // ==========================================
+  // Callback Stability Tests
+  // ==========================================
+  describe('Callback Stability', () => {
+    it('should maintain stable handleInputChange callback after rerender', () => {
+      // Arrange
+      const mockHandleInputChange = jest.fn()
+      const props = createDefaultProps({ handleInputChange: mockHandleInputChange })
+      const { rerender } = render(<Header {...props} />)
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+      // Act - Fire change event, rerender, fire again
+      fireEvent.change(input, { target: { value: 'first' } })
+      rerender(<Header {...props} />)
+      fireEvent.change(input, { target: { value: 'second' } })
+
+      // Assert
+      expect(mockHandleInputChange).toHaveBeenCalledTimes(2)
+    })
+
+    it('should maintain stable handleResetKeywords callback after rerender', () => {
+      // Arrange
+      const mockHandleResetKeywords = jest.fn()
+      const props = createDefaultProps({
+        inputValue: 'to-clear',
+        handleResetKeywords: mockHandleResetKeywords,
+      })
+      const { container, rerender } = render(<Header {...props} />)
+
+      // Act - Click clear, rerender, click again
+      const clearButton = container.querySelector('[class*="cursor-pointer"] svg[class*="h-3.5"]')?.parentElement
+      fireEvent.click(clearButton!)
+      rerender(<Header {...props} />)
+      fireEvent.click(clearButton!)
+
+      // Assert
+      expect(mockHandleResetKeywords).toHaveBeenCalledTimes(2)
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/index.spec.tsx
new file mode 100644
index 0000000000..e8e0930e44
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/index.spec.tsx
@@ -0,0 +1,757 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import React from 'react'
+import FileList from './index'
+import type { OnlineDriveFile } from '@/models/pipeline'
+import { OnlineDriveFileType } from '@/models/pipeline'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock ahooks useDebounceFn - third-party library requires mocking
+const mockDebounceFnRun = jest.fn()
+jest.mock('ahooks', () => ({
+  useDebounceFn: (fn: (...args: any[]) => void) => {
+    mockDebounceFnRun.mockImplementation(fn)
+    return { run: mockDebounceFnRun }
+  },
+}))
+
+// Mock store - context provider requires mocking
+const mockStoreState = {
+  setNextPageParameters: jest.fn(),
+  currentNextPageParametersRef: { current: {} },
+  isTruncated: { current: false },
+  hasBucket: false,
+  setOnlineDriveFileList: jest.fn(),
+  setSelectedFileIds: jest.fn(),
+  setBreadcrumbs: jest.fn(),
+  setPrefix: jest.fn(),
+  setBucket: jest.fn(),
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../../store', () => ({
+  useDataSourceStore: () => mockDataSourceStore,
+  useDataSourceStoreWithSelector: (selector: (s: any) => any) => selector(mockStoreState),
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockOnlineDriveFile = (overrides?: Partial<OnlineDriveFile>): OnlineDriveFile => ({
+  id: 'file-1',
+  name: 'test-file.txt',
+  size: 1024,
+  type: OnlineDriveFileType.file,
+  ...overrides,
+})
+
+type FileListProps = React.ComponentProps<typeof FileList>
+
+const createDefaultProps = (overrides?: Partial<FileListProps>): FileListProps => ({
+  fileList: [],
+  selectedFileIds: [],
+  breadcrumbs: [],
+  keywords: '',
+  bucket: '',
+  isInPipeline: false,
+  resetKeywords: jest.fn(),
+  updateKeywords: jest.fn(),
+  searchResultsLength: 0,
+  handleSelectFile: jest.fn(),
+  handleOpenFolder: jest.fn(),
+  isLoading: false,
+  supportBatchUpload: true,
+  ...overrides,
+})
+
+// ==========================================
+// Helper Functions
+// ==========================================
+const resetMockStoreState = () => {
+  mockStoreState.setNextPageParameters = jest.fn()
+  mockStoreState.currentNextPageParametersRef = { current: {} }
+  mockStoreState.isTruncated = { current: false }
+  mockStoreState.hasBucket = false
+  mockStoreState.setOnlineDriveFileList = jest.fn()
+  mockStoreState.setSelectedFileIds = jest.fn()
+  mockStoreState.setBreadcrumbs = jest.fn()
+  mockStoreState.setPrefix = jest.fn()
+  mockStoreState.setBucket = jest.fn()
+}
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('FileList', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+    resetMockStoreState()
+    mockDebounceFnRun.mockClear()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert - search input should be visible
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it('should render with correct container styles', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<FileList {...props} />)
+
+      // Assert
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass('flex')
+      expect(wrapper).toHaveClass('h-[400px]')
+      expect(wrapper).toHaveClass('flex-col')
+      expect(wrapper).toHaveClass('overflow-hidden')
+      expect(wrapper).toHaveClass('rounded-xl')
+    })
+
+    it('should render Header component with search input', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toBeInTheDocument()
+    })
+
+    it('should render files when fileList has items', () => {
+      // Arrange
+      const fileList = [
+        createMockOnlineDriveFile({ id: 'file-1', name: 'file1.txt' }),
+        createMockOnlineDriveFile({ id: 'file-2', name: 'file2.txt' }),
+      ]
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText('file1.txt')).toBeInTheDocument()
+      expect(screen.getByText('file2.txt')).toBeInTheDocument()
+    })
+
+    it('should show loading state when isLoading is true and fileList is empty', () => {
+      // Arrange
+      const props = createDefaultProps({ isLoading: true, fileList: [] })
+
+      // Act
+      const { container } = render(<FileList {...props} />)
+
+      // Assert - Loading component should be rendered with spin-animation class
+      expect(container.querySelector('.spin-animation')).toBeInTheDocument()
+    })
+
+    it('should show empty folder state when not loading and fileList is empty', () => {
+      // Arrange
+      const props = createDefaultProps({ isLoading: false, fileList: [], keywords: '' })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText('datasetPipeline.onlineDrive.emptyFolder')).toBeInTheDocument()
+    })
+
+    it('should show empty search result when not loading, fileList is empty, and keywords exist', () => {
+      // Arrange
+      const props = createDefaultProps({ isLoading: false, fileList: [], keywords: 'search-term' })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText('datasetPipeline.onlineDrive.emptySearchResult')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('fileList prop', () => {
+      it('should render all files from fileList', () => {
+        // Arrange
+        const fileList = [
+          createMockOnlineDriveFile({ id: '1', name: 'a.txt' }),
+          createMockOnlineDriveFile({ id: '2', name: 'b.txt' }),
+          createMockOnlineDriveFile({ id: '3', name: 'c.txt' }),
+        ]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<FileList {...props} />)
+
+        // Assert
+        expect(screen.getByText('a.txt')).toBeInTheDocument()
+        expect(screen.getByText('b.txt')).toBeInTheDocument()
+        expect(screen.getByText('c.txt')).toBeInTheDocument()
+      })
+
+      it('should handle empty fileList', () => {
+        // Arrange
+        const props = createDefaultProps({ fileList: [] })
+
+        // Act
+        render(<FileList {...props} />)
+
+        // Assert - Should show empty folder state
+        expect(screen.getByText('datasetPipeline.onlineDrive.emptyFolder')).toBeInTheDocument()
+      })
+    })
+
+    describe('selectedFileIds prop', () => {
+      it('should mark files as selected based on selectedFileIds', () => {
+        // Arrange
+        const fileList = [
+          createMockOnlineDriveFile({ id: 'file-1', name: 'file1.txt' }),
+          createMockOnlineDriveFile({ id: 'file-2', name: 'file2.txt' }),
+        ]
+        const props = createDefaultProps({ fileList, selectedFileIds: ['file-1'] })
+
+        // Act
+        render(<FileList {...props} />)
+
+        // Assert - The checkbox for file-1 should be checked (check icon present)
+        expect(screen.getByTestId('checkbox-file-1')).toBeInTheDocument()
+        expect(screen.getByTestId('check-icon-file-1')).toBeInTheDocument()
+        expect(screen.getByTestId('checkbox-file-2')).toBeInTheDocument()
+        expect(screen.queryByTestId('check-icon-file-2')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('keywords prop', () => {
+      it('should initialize input with keywords value', () => {
+        // Arrange
+        const props = createDefaultProps({ keywords: 'my-search' })
+
+        // Act
+        render(<FileList {...props} />)
+
+        // Assert
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        expect(input).toHaveValue('my-search')
+      })
+    })
+
+    describe('isLoading prop', () => {
+      it('should show loading when isLoading is true with empty list', () => {
+        // Arrange
+        const props = createDefaultProps({ isLoading: true, fileList: [] })
+
+        // Act
+        const { container } = render(<FileList {...props} />)
+
+        // Assert - Loading component with spin-animation class
+        expect(container.querySelector('.spin-animation')).toBeInTheDocument()
+      })
+
+      it('should show loading indicator at bottom when isLoading is true with files', () => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile()]
+        const props = createDefaultProps({ isLoading: true, fileList })
+
+        // Act
+        const { container } = render(<FileList {...props} />)
+
+        // Assert - Should show spinner icon at the bottom
+        expect(container.querySelector('.animation-spin')).toBeInTheDocument()
+      })
+    })
+
+    describe('supportBatchUpload prop', () => {
+      it('should render checkboxes when supportBatchUpload is true', () => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile({ id: 'file-1', name: 'file1.txt' })]
+        const props = createDefaultProps({ fileList, supportBatchUpload: true })
+
+        // Act
+        render(<FileList {...props} />)
+
+        // Assert - Checkbox component has data-testid="checkbox-{id}"
+        expect(screen.getByTestId('checkbox-file-1')).toBeInTheDocument()
+      })
+
+      it('should render radio buttons when supportBatchUpload is false', () => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile({ id: 'file-1', name: 'file1.txt' })]
+        const props = createDefaultProps({ fileList, supportBatchUpload: false })
+
+        // Act
+        const { container } = render(<FileList {...props} />)
+
+        // Assert - Radio is rendered as a div with rounded-full class
+        expect(container.querySelector('.rounded-full')).toBeInTheDocument()
+        // And checkbox should not be present
+        expect(screen.queryByTestId('checkbox-file-1')).not.toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // State Management Tests
+  // ==========================================
+  describe('State Management', () => {
+    describe('inputValue state', () => {
+      it('should initialize inputValue with keywords prop', () => {
+        // Arrange
+        const props = createDefaultProps({ keywords: 'initial-keyword' })
+
+        // Act
+        render(<FileList {...props} />)
+
+        // Assert
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        expect(input).toHaveValue('initial-keyword')
+      })
+
+      it('should update inputValue when input changes', () => {
+        // Arrange
+        const props = createDefaultProps({ keywords: '' })
+        render(<FileList {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'new-value' } })
+
+        // Assert
+        expect(input).toHaveValue('new-value')
+      })
+    })
+
+    describe('debounced keywords update', () => {
+      it('should call updateKeywords with debounce when input changes', () => {
+        // Arrange
+        const mockUpdateKeywords = jest.fn()
+        const props = createDefaultProps({ updateKeywords: mockUpdateKeywords })
+        render(<FileList {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'debounced-value' } })
+
+        // Assert
+        expect(mockDebounceFnRun).toHaveBeenCalledWith('debounced-value')
+      })
+    })
+  })
+
+  // ==========================================
+  // Event Handlers Tests
+  // ==========================================
+  describe('Event Handlers', () => {
+    describe('handleInputChange', () => {
+      it('should update inputValue on input change', () => {
+        // Arrange
+        const props = createDefaultProps()
+        render(<FileList {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'typed-text' } })
+
+        // Assert
+        expect(input).toHaveValue('typed-text')
+      })
+
+      it('should trigger debounced updateKeywords on input change', () => {
+        // Arrange
+        const mockUpdateKeywords = jest.fn()
+        const props = createDefaultProps({ updateKeywords: mockUpdateKeywords })
+        render(<FileList {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'search-term' } })
+
+        // Assert
+        expect(mockDebounceFnRun).toHaveBeenCalledWith('search-term')
+      })
+
+      it('should handle multiple sequential input changes', () => {
+        // Arrange
+        const mockUpdateKeywords = jest.fn()
+        const props = createDefaultProps({ updateKeywords: mockUpdateKeywords })
+        render(<FileList {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+        // Act
+        fireEvent.change(input, { target: { value: 'a' } })
+        fireEvent.change(input, { target: { value: 'ab' } })
+        fireEvent.change(input, { target: { value: 'abc' } })
+
+        // Assert
+        expect(mockDebounceFnRun).toHaveBeenCalledTimes(3)
+        expect(mockDebounceFnRun).toHaveBeenLastCalledWith('abc')
+        expect(input).toHaveValue('abc')
+      })
+    })
+
+    describe('handleResetKeywords', () => {
+      it('should call resetKeywords prop when clear button is clicked', () => {
+        // Arrange
+        const mockResetKeywords = jest.fn()
+        const props = createDefaultProps({ resetKeywords: mockResetKeywords, keywords: 'to-reset' })
+        const { container } = render(<FileList {...props} />)
+
+        // Act - Click the clear icon div (it contains RiCloseCircleFill icon)
+        const clearButton = container.querySelector('[class*="cursor-pointer"] svg[class*="h-3.5"]')?.parentElement
+        expect(clearButton).toBeInTheDocument()
+        fireEvent.click(clearButton!)
+
+        // Assert
+        expect(mockResetKeywords).toHaveBeenCalledTimes(1)
+      })
+
+      it('should reset inputValue to empty string when clear is clicked', () => {
+        // Arrange
+        const props = createDefaultProps({ keywords: 'to-be-reset' })
+        const { container } = render(<FileList {...props} />)
+        const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+        fireEvent.change(input, { target: { value: 'some-search' } })
+
+        // Act - Find and click the clear icon
+        const clearButton = container.querySelector('[class*="cursor-pointer"] svg[class*="h-3.5"]')?.parentElement
+        expect(clearButton).toBeInTheDocument()
+        fireEvent.click(clearButton!)
+
+        // Assert
+        expect(input).toHaveValue('')
+      })
+    })
+
+    describe('handleSelectFile', () => {
+      it('should call handleSelectFile when file item is clicked', () => {
+        // Arrange
+        const mockHandleSelectFile = jest.fn()
+        const fileList = [createMockOnlineDriveFile({ id: 'file-1', name: 'test.txt' })]
+        const props = createDefaultProps({ handleSelectFile: mockHandleSelectFile, fileList })
+        render(<FileList {...props} />)
+
+        // Act - Click on the file item
+        const fileItem = screen.getByText('test.txt')
+        fireEvent.click(fileItem.closest('[class*="cursor-pointer"]')!)
+
+        // Assert
+        expect(mockHandleSelectFile).toHaveBeenCalledWith(expect.objectContaining({
+          id: 'file-1',
+          name: 'test.txt',
+          type: OnlineDriveFileType.file,
+        }))
+      })
+    })
+
+    describe('handleOpenFolder', () => {
+      it('should call handleOpenFolder when folder item is clicked', () => {
+        // Arrange
+        const mockHandleOpenFolder = jest.fn()
+        const fileList = [createMockOnlineDriveFile({ id: 'folder-1', name: 'my-folder', type: OnlineDriveFileType.folder })]
+        const props = createDefaultProps({ handleOpenFolder: mockHandleOpenFolder, fileList })
+        render(<FileList {...props} />)
+
+        // Act - Click on the folder item
+        const folderItem = screen.getByText('my-folder')
+        fireEvent.click(folderItem.closest('[class*="cursor-pointer"]')!)
+
+        // Assert
+        expect(mockHandleOpenFolder).toHaveBeenCalledWith(expect.objectContaining({
+          id: 'folder-1',
+          name: 'my-folder',
+          type: OnlineDriveFileType.folder,
+        }))
+      })
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle empty string keywords', () => {
+      // Arrange
+      const props = createDefaultProps({ keywords: '' })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue('')
+    })
+
+    it('should handle special characters in keywords', () => {
+      // Arrange
+      const specialChars = 'test[file].txt (copy)'
+      const props = createDefaultProps({ keywords: specialChars })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue(specialChars)
+    })
+
+    it('should handle unicode characters in keywords', () => {
+      // Arrange
+      const unicodeKeywords = '文件搜索 日本語'
+      const props = createDefaultProps({ keywords: unicodeKeywords })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue(unicodeKeywords)
+    })
+
+    it('should handle very long file names in fileList', () => {
+      // Arrange
+      const longName = `${'a'.repeat(100)}.txt`
+      const fileList = [createMockOnlineDriveFile({ id: '1', name: longName })]
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText(longName)).toBeInTheDocument()
+    })
+
+    it('should handle large number of files', () => {
+      // Arrange
+      const fileList = Array.from({ length: 50 }, (_, i) =>
+        createMockOnlineDriveFile({ id: `file-${i}`, name: `file-${i}.txt` }),
+      )
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert - Check a few files exist
+      expect(screen.getByText('file-0.txt')).toBeInTheDocument()
+      expect(screen.getByText('file-49.txt')).toBeInTheDocument()
+    })
+
+    it('should handle whitespace-only keywords input', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<FileList {...props} />)
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+
+      // Act
+      fireEvent.change(input, { target: { value: '   ' } })
+
+      // Assert
+      expect(input).toHaveValue('   ')
+      expect(mockDebounceFnRun).toHaveBeenCalledWith('   ')
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { isInPipeline: true, supportBatchUpload: true },
+      { isInPipeline: true, supportBatchUpload: false },
+      { isInPipeline: false, supportBatchUpload: true },
+      { isInPipeline: false, supportBatchUpload: false },
+    ])('should render correctly with isInPipeline=$isInPipeline and supportBatchUpload=$supportBatchUpload', (propVariation) => {
+      // Arrange
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert - Component should render without crashing
+      expect(screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')).toBeInTheDocument()
+    })
+
+    it.each([
+      { isLoading: true, fileCount: 0, description: 'loading state with no files' },
+      { isLoading: false, fileCount: 0, description: 'not loading with no files' },
+      { isLoading: false, fileCount: 3, description: 'not loading with files' },
+    ])('should handle $description correctly', ({ isLoading, fileCount }) => {
+      // Arrange
+      const fileList = Array.from({ length: fileCount }, (_, i) =>
+        createMockOnlineDriveFile({ id: `file-${i}`, name: `file-${i}.txt` }),
+      )
+      const props = createDefaultProps({ isLoading, fileList })
+
+      // Act
+      const { container } = render(<FileList {...props} />)
+
+      // Assert
+      if (isLoading && fileCount === 0)
+        expect(container.querySelector('.spin-animation')).toBeInTheDocument()
+
+      else if (!isLoading && fileCount === 0)
+        expect(screen.getByText('datasetPipeline.onlineDrive.emptyFolder')).toBeInTheDocument()
+
+      else
+        expect(screen.getByText('file-0.txt')).toBeInTheDocument()
+    })
+
+    it.each([
+      { keywords: '', searchResultsLength: 0 },
+      { keywords: 'test', searchResultsLength: 5 },
+      { keywords: 'not-found', searchResultsLength: 0 },
+    ])('should render correctly with keywords="$keywords" and searchResultsLength=$searchResultsLength', ({ keywords, searchResultsLength }) => {
+      // Arrange
+      const props = createDefaultProps({ keywords, searchResultsLength })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      const input = screen.getByPlaceholderText('datasetPipeline.onlineDrive.breadcrumbs.searchPlaceholder')
+      expect(input).toHaveValue(keywords)
+    })
+  })
+
+  // ==========================================
+  // File Type Variations
+  // ==========================================
+  describe('File Type Variations', () => {
+    it('should render folder type correctly', () => {
+      // Arrange
+      const fileList = [createMockOnlineDriveFile({ id: 'folder-1', name: 'my-folder', type: OnlineDriveFileType.folder })]
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText('my-folder')).toBeInTheDocument()
+    })
+
+    it('should render bucket type correctly', () => {
+      // Arrange
+      const fileList = [createMockOnlineDriveFile({ id: 'bucket-1', name: 'my-bucket', type: OnlineDriveFileType.bucket })]
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText('my-bucket')).toBeInTheDocument()
+    })
+
+    it('should render file with size', () => {
+      // Arrange
+      const fileList = [createMockOnlineDriveFile({ id: 'file-1', name: 'test.txt', size: 1024 })]
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText('test.txt')).toBeInTheDocument()
+      // formatFileSize returns '1.00 KB' for 1024 bytes
+      expect(screen.getByText('1.00 KB')).toBeInTheDocument()
+    })
+
+    it('should not show checkbox for bucket type', () => {
+      // Arrange
+      const fileList = [createMockOnlineDriveFile({ id: 'bucket-1', name: 'my-bucket', type: OnlineDriveFileType.bucket })]
+      const props = createDefaultProps({ fileList, supportBatchUpload: true })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert - No checkbox should be rendered for bucket
+      expect(screen.queryByRole('checkbox')).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Search Results Display
+  // ==========================================
+  describe('Search Results Display', () => {
+    it('should show search results count when keywords and results exist', () => {
+      // Arrange
+      const props = createDefaultProps({
+        keywords: 'test',
+        searchResultsLength: 5,
+        breadcrumbs: ['folder1'],
+      })
+
+      // Act
+      render(<FileList {...props} />)
+
+      // Assert
+      expect(screen.getByText(/datasetPipeline\.onlineDrive\.breadcrumbs\.searchResult/)).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Callback Stability
+  // ==========================================
+  describe('Callback Stability', () => {
+    it('should maintain stable handleSelectFile callback', () => {
+      // Arrange
+      const mockHandleSelectFile = jest.fn()
+      const fileList = [createMockOnlineDriveFile({ id: 'file-1', name: 'test.txt' })]
+      const props = createDefaultProps({ handleSelectFile: mockHandleSelectFile, fileList })
+      const { rerender } = render(<FileList {...props} />)
+
+      // Act - Click once
+      const fileItem = screen.getByText('test.txt')
+      fireEvent.click(fileItem.closest('[class*="cursor-pointer"]')!)
+
+      // Rerender with same props
+      rerender(<FileList {...props} />)
+
+      // Click again
+      fireEvent.click(fileItem.closest('[class*="cursor-pointer"]')!)
+
+      // Assert
+      expect(mockHandleSelectFile).toHaveBeenCalledTimes(2)
+    })
+
+    it('should maintain stable handleOpenFolder callback', () => {
+      // Arrange
+      const mockHandleOpenFolder = jest.fn()
+      const fileList = [createMockOnlineDriveFile({ id: 'folder-1', name: 'my-folder', type: OnlineDriveFileType.folder })]
+      const props = createDefaultProps({ handleOpenFolder: mockHandleOpenFolder, fileList })
+      const { rerender } = render(<FileList {...props} />)
+
+      // Act - Click once
+      const folderItem = screen.getByText('my-folder')
+      fireEvent.click(folderItem.closest('[class*="cursor-pointer"]')!)
+
+      // Rerender with same props
+      rerender(<FileList {...props} />)
+
+      // Click again
+      fireEvent.click(folderItem.closest('[class*="cursor-pointer"]')!)
+
+      // Assert
+      expect(mockHandleOpenFolder).toHaveBeenCalledTimes(2)
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/list/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/list/index.spec.tsx
new file mode 100644
index 0000000000..9d27cff4cf
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/file-list/list/index.spec.tsx
@@ -0,0 +1,2071 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import React from 'react'
+import List from './index'
+import type { OnlineDriveFile } from '@/models/pipeline'
+import { OnlineDriveFileType } from '@/models/pipeline'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock Loading component - base component with simple render
+jest.mock('@/app/components/base/loading', () => {
+  const MockLoading = ({ type }: { type?: string }) => (
+    <div data-testid="loading" data-type={type}>Loading...</div>
+  )
+  return MockLoading
+})
+
+// Mock Item component for List tests - child component with complex behavior
+jest.mock('./item', () => {
+  const MockItem = ({ file, isSelected, onSelect, onOpen, isMultipleChoice }: {
+    file: OnlineDriveFile
+    isSelected: boolean
+    onSelect: (file: OnlineDriveFile) => void
+    onOpen: (file: OnlineDriveFile) => void
+    isMultipleChoice: boolean
+  }) => {
+    return (
+      <div
+        data-testid={`item-${file.id}`}
+        data-selected={isSelected}
+        data-multiple-choice={isMultipleChoice}
+      >
+        <span data-testid={`item-name-${file.id}`}>{file.name}</span>
+        <button data-testid={`item-select-${file.id}`} onClick={() => onSelect(file)}>Select</button>
+        <button data-testid={`item-open-${file.id}`} onClick={() => onOpen(file)}>Open</button>
+      </div>
+    )
+  }
+  return MockItem
+})
+
+// Mock EmptyFolder component for List tests
+jest.mock('./empty-folder', () => {
+  const MockEmptyFolder = () => (
+    <div data-testid="empty-folder">Empty Folder</div>
+  )
+  return MockEmptyFolder
+})
+
+// Mock EmptySearchResult component for List tests
+jest.mock('./empty-search-result', () => {
+  const MockEmptySearchResult = ({ onResetKeywords }: { onResetKeywords: () => void }) => (
+    <div data-testid="empty-search-result">
+      <span>No results</span>
+      <button data-testid="reset-keywords-btn" onClick={onResetKeywords}>Reset</button>
+    </div>
+  )
+  return MockEmptySearchResult
+})
+
+// Mock store state and refs
+const mockIsTruncated = { current: false }
+const mockCurrentNextPageParametersRef = { current: {} as Record<string, any> }
+const mockSetNextPageParameters = jest.fn()
+
+const mockStoreState = {
+  isTruncated: mockIsTruncated,
+  currentNextPageParametersRef: mockCurrentNextPageParametersRef,
+  setNextPageParameters: mockSetNextPageParameters,
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../../../store', () => ({
+  useDataSourceStore: () => mockDataSourceStore,
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockOnlineDriveFile = (overrides?: Partial<OnlineDriveFile>): OnlineDriveFile => ({
+  id: 'file-1',
+  name: 'test-file.txt',
+  size: 1024,
+  type: OnlineDriveFileType.file,
+  ...overrides,
+})
+
+const createMockFileList = (count: number): OnlineDriveFile[] => {
+  return Array.from({ length: count }, (_, index) => createMockOnlineDriveFile({
+    id: `file-${index + 1}`,
+    name: `file-${index + 1}.txt`,
+    size: (index + 1) * 1024,
+  }))
+}
+
+type ListProps = React.ComponentProps<typeof List>
+
+const createDefaultProps = (overrides?: Partial<ListProps>): ListProps => ({
+  fileList: [],
+  selectedFileIds: [],
+  keywords: '',
+  isLoading: false,
+  supportBatchUpload: true,
+  handleResetKeywords: jest.fn(),
+  handleSelectFile: jest.fn(),
+  handleOpenFolder: jest.fn(),
+  ...overrides,
+})
+
+// ==========================================
+// Mock IntersectionObserver
+// ==========================================
+let mockIntersectionObserverCallback: IntersectionObserverCallback | null = null
+let mockIntersectionObserverInstance: {
+  observe: jest.Mock
+  disconnect: jest.Mock
+  unobserve: jest.Mock
+} | null = null
+
+const createMockIntersectionObserver = () => {
+  const instance = {
+    observe: jest.fn(),
+    disconnect: jest.fn(),
+    unobserve: jest.fn(),
+  }
+  mockIntersectionObserverInstance = instance
+
+  return class MockIntersectionObserver {
+    callback: IntersectionObserverCallback
+    options: IntersectionObserverInit
+
+    constructor(callback: IntersectionObserverCallback, options?: IntersectionObserverInit) {
+      this.callback = callback
+      this.options = options || {}
+      mockIntersectionObserverCallback = callback
+    }
+
+    observe = instance.observe
+    disconnect = instance.disconnect
+    unobserve = instance.unobserve
+  }
+}
+
+// ==========================================
+// Helper Functions
+// ==========================================
+const triggerIntersection = (isIntersecting: boolean) => {
+  if (mockIntersectionObserverCallback) {
+    const entries = [{
+      isIntersecting,
+      boundingClientRect: {} as DOMRectReadOnly,
+      intersectionRatio: isIntersecting ? 1 : 0,
+      intersectionRect: {} as DOMRectReadOnly,
+      rootBounds: null,
+      target: document.createElement('div'),
+      time: Date.now(),
+    }] as IntersectionObserverEntry[]
+    mockIntersectionObserverCallback(entries, {} as IntersectionObserver)
+  }
+}
+
+const resetMockStoreState = () => {
+  mockIsTruncated.current = false
+  mockCurrentNextPageParametersRef.current = {}
+  mockSetNextPageParameters.mockClear()
+  mockGetState.mockClear()
+}
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('List', () => {
+  const originalIntersectionObserver = window.IntersectionObserver
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    resetMockStoreState()
+    mockIntersectionObserverCallback = null
+    mockIntersectionObserverInstance = null
+
+    // Setup IntersectionObserver mock
+    window.IntersectionObserver = createMockIntersectionObserver() as unknown as typeof IntersectionObserver
+  })
+
+  afterEach(() => {
+    window.IntersectionObserver = originalIntersectionObserver
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      expect(document.body).toBeInTheDocument()
+    })
+
+    it('should render Loading component when isAllLoading is true', () => {
+      // Arrange
+      const props = createDefaultProps({
+        isLoading: true,
+        fileList: [],
+        keywords: '',
+      })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('loading')).toBeInTheDocument()
+      expect(screen.getByTestId('loading')).toHaveAttribute('data-type', 'app')
+    })
+
+    it('should render EmptyFolder when folder is empty and not loading', () => {
+      // Arrange
+      const props = createDefaultProps({
+        isLoading: false,
+        fileList: [],
+        keywords: '',
+      })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+    })
+
+    it('should render EmptySearchResult when search has no results', () => {
+      // Arrange
+      const props = createDefaultProps({
+        isLoading: false,
+        fileList: [],
+        keywords: 'non-existent-file',
+      })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('empty-search-result')).toBeInTheDocument()
+    })
+
+    it('should render file list when files exist', () => {
+      // Arrange
+      const fileList = createMockFileList(3)
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      expect(screen.getByTestId('item-file-2')).toBeInTheDocument()
+      expect(screen.getByTestId('item-file-3')).toBeInTheDocument()
+    })
+
+    it('should render partial loading spinner when loading more files', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props = createDefaultProps({
+        fileList,
+        isLoading: true,
+      })
+
+      // Act
+      const { container } = render(<List {...props} />)
+
+      // Assert - Should show files AND loading spinner (animation-spin class)
+      expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      expect(container.querySelector('.animation-spin')).toBeInTheDocument()
+    })
+
+    it('should not render Loading component when partial loading', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props = createDefaultProps({
+        fileList,
+        isLoading: true,
+      })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert - Full page loading should not appear
+      expect(screen.queryByTestId('loading')).not.toBeInTheDocument()
+    })
+
+    it('should render anchor div for infinite scroll', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      const { container } = render(<List {...props} />)
+
+      // Assert - Anchor div should exist with h-0 class
+      const anchorDiv = container.querySelector('.h-0')
+      expect(anchorDiv).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('fileList prop', () => {
+      it('should render all files from fileList', () => {
+        // Arrange
+        const fileList = createMockFileList(5)
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        fileList.forEach((file) => {
+          expect(screen.getByTestId(`item-${file.id}`)).toBeInTheDocument()
+          expect(screen.getByTestId(`item-name-${file.id}`)).toHaveTextContent(file.name)
+        })
+      })
+
+      it('should handle empty fileList', () => {
+        // Arrange
+        const props = createDefaultProps({ fileList: [] })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+      })
+
+      it('should handle single file in fileList', () => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile()]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      })
+
+      it('should handle large fileList', () => {
+        // Arrange
+        const fileList = createMockFileList(100)
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+        expect(screen.getByTestId('item-file-100')).toBeInTheDocument()
+      })
+    })
+
+    describe('selectedFileIds prop', () => {
+      it('should mark selected files as selected', () => {
+        // Arrange
+        const fileList = createMockFileList(3)
+        const props = createDefaultProps({
+          fileList,
+          selectedFileIds: ['file-1', 'file-3'],
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toHaveAttribute('data-selected', 'true')
+        expect(screen.getByTestId('item-file-2')).toHaveAttribute('data-selected', 'false')
+        expect(screen.getByTestId('item-file-3')).toHaveAttribute('data-selected', 'true')
+      })
+
+      it('should handle empty selectedFileIds', () => {
+        // Arrange
+        const fileList = createMockFileList(3)
+        const props = createDefaultProps({
+          fileList,
+          selectedFileIds: [],
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        fileList.forEach((file) => {
+          expect(screen.getByTestId(`item-${file.id}`)).toHaveAttribute('data-selected', 'false')
+        })
+      })
+
+      it('should handle all files selected', () => {
+        // Arrange
+        const fileList = createMockFileList(3)
+        const props = createDefaultProps({
+          fileList,
+          selectedFileIds: ['file-1', 'file-2', 'file-3'],
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        fileList.forEach((file) => {
+          expect(screen.getByTestId(`item-${file.id}`)).toHaveAttribute('data-selected', 'true')
+        })
+      })
+    })
+
+    describe('keywords prop', () => {
+      it('should show EmptySearchResult when keywords exist but no results', () => {
+        // Arrange
+        const props = createDefaultProps({
+          fileList: [],
+          keywords: 'search-term',
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('empty-search-result')).toBeInTheDocument()
+      })
+
+      it('should show EmptyFolder when keywords is empty and no files', () => {
+        // Arrange
+        const props = createDefaultProps({
+          fileList: [],
+          keywords: '',
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+      })
+    })
+
+    describe('isLoading prop', () => {
+      it.each([
+        { isLoading: true, fileList: [], keywords: '', expected: 'isAllLoading' },
+        { isLoading: true, fileList: createMockFileList(2), keywords: '', expected: 'isPartialLoading' },
+        { isLoading: false, fileList: [], keywords: '', expected: 'isEmpty' },
+        { isLoading: false, fileList: createMockFileList(2), keywords: '', expected: 'hasFiles' },
+      ])('should render correctly when isLoading=$isLoading with fileList.length=$fileList.length', ({ isLoading, fileList, expected }) => {
+        // Arrange
+        const props = createDefaultProps({ isLoading, fileList })
+
+        // Act
+        const { container } = render(<List {...props} />)
+
+        // Assert
+        switch (expected) {
+          case 'isAllLoading':
+            expect(screen.getByTestId('loading')).toBeInTheDocument()
+            break
+          case 'isPartialLoading':
+            expect(container.querySelector('.animation-spin')).toBeInTheDocument()
+            break
+          case 'isEmpty':
+            expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+            break
+          case 'hasFiles':
+            expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+            break
+        }
+      })
+    })
+
+    describe('supportBatchUpload prop', () => {
+      it('should pass supportBatchUpload true to Item components', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          supportBatchUpload: true,
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toHaveAttribute('data-multiple-choice', 'true')
+      })
+
+      it('should pass supportBatchUpload false to Item components', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          supportBatchUpload: false,
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toHaveAttribute('data-multiple-choice', 'false')
+      })
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions', () => {
+    describe('File Selection', () => {
+      it('should call handleSelectFile when selecting a file', () => {
+        // Arrange
+        const handleSelectFile = jest.fn()
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          handleSelectFile,
+        })
+        render(<List {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('item-select-file-1'))
+
+        // Assert
+        expect(handleSelectFile).toHaveBeenCalledWith(fileList[0])
+      })
+
+      it('should call handleSelectFile with correct file data', () => {
+        // Arrange
+        const handleSelectFile = jest.fn()
+        const fileList = [
+          createMockOnlineDriveFile({ id: 'unique-id', name: 'special-file.pdf', size: 5000 }),
+        ]
+        const props = createDefaultProps({
+          fileList,
+          handleSelectFile,
+        })
+        render(<List {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('item-select-unique-id'))
+
+        // Assert
+        expect(handleSelectFile).toHaveBeenCalledWith(
+          expect.objectContaining({
+            id: 'unique-id',
+            name: 'special-file.pdf',
+            size: 5000,
+          }),
+        )
+      })
+    })
+
+    describe('Folder Navigation', () => {
+      it('should call handleOpenFolder when opening a folder', () => {
+        // Arrange
+        const handleOpenFolder = jest.fn()
+        const fileList = [
+          createMockOnlineDriveFile({ id: 'folder-1', name: 'Documents', type: OnlineDriveFileType.folder }),
+        ]
+        const props = createDefaultProps({
+          fileList,
+          handleOpenFolder,
+        })
+        render(<List {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('item-open-folder-1'))
+
+        // Assert
+        expect(handleOpenFolder).toHaveBeenCalledWith(fileList[0])
+      })
+    })
+
+    describe('Reset Keywords', () => {
+      it('should call handleResetKeywords when reset button is clicked', () => {
+        // Arrange
+        const handleResetKeywords = jest.fn()
+        const props = createDefaultProps({
+          fileList: [],
+          keywords: 'search-term',
+          handleResetKeywords,
+        })
+        render(<List {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('reset-keywords-btn'))
+
+        // Assert
+        expect(handleResetKeywords).toHaveBeenCalledTimes(1)
+      })
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup Tests (IntersectionObserver)
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    describe('IntersectionObserver Setup', () => {
+      it('should create IntersectionObserver on mount', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(mockIntersectionObserverInstance?.observe).toHaveBeenCalled()
+      })
+
+      it('should create IntersectionObserver with correct rootMargin', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert - Callback should be set
+        expect(mockIntersectionObserverCallback).toBeDefined()
+      })
+
+      it('should observe the anchor element', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        const { container } = render(<List {...props} />)
+
+        // Assert
+        expect(mockIntersectionObserverInstance?.observe).toHaveBeenCalled()
+        const anchorDiv = container.querySelector('.h-0')
+        expect(anchorDiv).toBeInTheDocument()
+      })
+    })
+
+    describe('IntersectionObserver Callback', () => {
+      it('should call setNextPageParameters when intersecting and truncated', async () => {
+        // Arrange
+        mockIsTruncated.current = true
+        mockCurrentNextPageParametersRef.current = { cursor: 'next-cursor' }
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: false,
+        })
+        render(<List {...props} />)
+
+        // Act
+        triggerIntersection(true)
+
+        // Assert
+        await waitFor(() => {
+          expect(mockSetNextPageParameters).toHaveBeenCalledWith({ cursor: 'next-cursor' })
+        })
+      })
+
+      it('should not call setNextPageParameters when not intersecting', () => {
+        // Arrange
+        mockIsTruncated.current = true
+        mockCurrentNextPageParametersRef.current = { cursor: 'next-cursor' }
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: false,
+        })
+        render(<List {...props} />)
+
+        // Act
+        triggerIntersection(false)
+
+        // Assert
+        expect(mockSetNextPageParameters).not.toHaveBeenCalled()
+      })
+
+      it('should not call setNextPageParameters when not truncated', () => {
+        // Arrange
+        mockIsTruncated.current = false
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: false,
+        })
+        render(<List {...props} />)
+
+        // Act
+        triggerIntersection(true)
+
+        // Assert
+        expect(mockSetNextPageParameters).not.toHaveBeenCalled()
+      })
+
+      it('should not call setNextPageParameters when loading', () => {
+        // Arrange
+        mockIsTruncated.current = true
+        mockCurrentNextPageParametersRef.current = { cursor: 'next-cursor' }
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: true,
+        })
+        render(<List {...props} />)
+
+        // Act
+        triggerIntersection(true)
+
+        // Assert
+        expect(mockSetNextPageParameters).not.toHaveBeenCalled()
+      })
+    })
+
+    describe('IntersectionObserver Cleanup', () => {
+      it('should disconnect IntersectionObserver on unmount', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({ fileList })
+        const { unmount } = render(<List {...props} />)
+
+        // Act
+        unmount()
+
+        // Assert
+        expect(mockIntersectionObserverInstance?.disconnect).toHaveBeenCalled()
+      })
+
+      it('should cleanup previous observer when dependencies change', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: false,
+        })
+        const { rerender } = render(<List {...props} />)
+
+        // Act - Trigger re-render with changed isLoading
+        rerender(<List {...props} isLoading={true} />)
+
+        // Assert - Previous observer should be disconnected
+        expect(mockIntersectionObserverInstance?.disconnect).toHaveBeenCalled()
+      })
+    })
+  })
+
+  // ==========================================
+  // Component Memoization Tests
+  // ==========================================
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Arrange & Assert
+      // List component should have $$typeof symbol indicating memo wrapper
+      expect(List).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+
+    it('should not re-render when props are equal', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props = createDefaultProps({ fileList })
+      const renderSpy = jest.fn()
+
+      // Create a wrapper component to track renders
+      const TestWrapper = ({ testProps }: { testProps: ListProps }) => {
+        renderSpy()
+        return <List {...testProps} />
+      }
+
+      const { rerender } = render(<TestWrapper testProps={props} />)
+      const initialRenderCount = renderSpy.mock.calls.length
+
+      // Act - Rerender with same props
+      rerender(<TestWrapper testProps={props} />)
+
+      // Assert - Should have rendered again (wrapper re-renders, but memo prevents List re-render)
+      expect(renderSpy.mock.calls.length).toBe(initialRenderCount + 1)
+    })
+
+    it('should re-render when fileList changes', () => {
+      // Arrange
+      const fileList1 = createMockFileList(2)
+      const fileList2 = createMockFileList(3)
+      const props1 = createDefaultProps({ fileList: fileList1 })
+      const props2 = createDefaultProps({ fileList: fileList2 })
+
+      const { rerender } = render(<List {...props1} />)
+
+      // Assert initial state
+      expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      expect(screen.getByTestId('item-file-2')).toBeInTheDocument()
+      expect(screen.queryByTestId('item-file-3')).not.toBeInTheDocument()
+
+      // Act - Rerender with new fileList
+      rerender(<List {...props2} />)
+
+      // Assert - Should show new file
+      expect(screen.getByTestId('item-file-3')).toBeInTheDocument()
+    })
+
+    it('should re-render when selectedFileIds changes', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props1 = createDefaultProps({ fileList, selectedFileIds: [] })
+      const props2 = createDefaultProps({ fileList, selectedFileIds: ['file-1'] })
+
+      const { rerender } = render(<List {...props1} />)
+
+      // Assert initial state
+      expect(screen.getByTestId('item-file-1')).toHaveAttribute('data-selected', 'false')
+
+      // Act
+      rerender(<List {...props2} />)
+
+      // Assert
+      expect(screen.getByTestId('item-file-1')).toHaveAttribute('data-selected', 'true')
+    })
+
+    it('should re-render when isLoading changes', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props1 = createDefaultProps({ fileList, isLoading: false })
+      const props2 = createDefaultProps({ fileList, isLoading: true })
+
+      const { rerender, container } = render(<List {...props1} />)
+
+      // Assert initial state - no loading spinner
+      expect(container.querySelector('.animation-spin')).not.toBeInTheDocument()
+
+      // Act
+      rerender(<List {...props2} />)
+
+      // Assert - loading spinner should appear
+      expect(container.querySelector('.animation-spin')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    describe('Empty/Null Values', () => {
+      it('should handle empty fileList array', () => {
+        // Arrange
+        const props = createDefaultProps({ fileList: [] })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+      })
+
+      it('should handle empty selectedFileIds array', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          selectedFileIds: [],
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toHaveAttribute('data-selected', 'false')
+      })
+
+      it('should handle empty keywords string', () => {
+        // Arrange
+        const props = createDefaultProps({
+          fileList: [],
+          keywords: '',
+        })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert - Shows empty folder, not empty search result
+        expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+        expect(screen.queryByTestId('empty-search-result')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('Boundary Conditions', () => {
+      it('should handle very long file names', () => {
+        // Arrange
+        const longName = `${'a'.repeat(500)}.txt`
+        const fileList = [createMockOnlineDriveFile({ name: longName })]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-name-file-1')).toHaveTextContent(longName)
+      })
+
+      it('should handle special characters in file names', () => {
+        // Arrange
+        const specialName = 'test<script>alert("xss")</script>.txt'
+        const fileList = [createMockOnlineDriveFile({ name: specialName })]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-name-file-1')).toHaveTextContent(specialName)
+      })
+
+      it('should handle unicode characters in file names', () => {
+        // Arrange
+        const unicodeName = '文件_📁_ファイル.txt'
+        const fileList = [createMockOnlineDriveFile({ name: unicodeName })]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-name-file-1')).toHaveTextContent(unicodeName)
+      })
+
+      it('should handle file with zero size', () => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile({ size: 0 })]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      })
+
+      it('should handle file with undefined size', () => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile({ size: undefined })]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      })
+    })
+
+    describe('Different File Types', () => {
+      it.each([
+        { type: OnlineDriveFileType.file, name: 'document.pdf' },
+        { type: OnlineDriveFileType.folder, name: 'Documents' },
+        { type: OnlineDriveFileType.bucket, name: 'my-bucket' },
+      ])('should render $type type correctly', ({ type, name }) => {
+        // Arrange
+        const fileList = [createMockOnlineDriveFile({ id: `item-${type}`, type, name })]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId(`item-item-${type}`)).toBeInTheDocument()
+        expect(screen.getByTestId(`item-name-item-${type}`)).toHaveTextContent(name)
+      })
+
+      it('should handle mixed file types in list', () => {
+        // Arrange
+        const fileList = [
+          createMockOnlineDriveFile({ id: 'file-1', type: OnlineDriveFileType.file, name: 'doc.pdf' }),
+          createMockOnlineDriveFile({ id: 'folder-1', type: OnlineDriveFileType.folder, name: 'Documents' }),
+          createMockOnlineDriveFile({ id: 'bucket-1', type: OnlineDriveFileType.bucket, name: 'my-bucket' }),
+        ]
+        const props = createDefaultProps({ fileList })
+
+        // Act
+        render(<List {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+        expect(screen.getByTestId('item-folder-1')).toBeInTheDocument()
+        expect(screen.getByTestId('item-bucket-1')).toBeInTheDocument()
+      })
+    })
+
+    describe('Loading States Transitions', () => {
+      it('should transition from loading to empty folder', () => {
+        // Arrange
+        const props1 = createDefaultProps({ isLoading: true, fileList: [] })
+        const props2 = createDefaultProps({ isLoading: false, fileList: [] })
+
+        const { rerender } = render(<List {...props1} />)
+
+        // Assert initial loading state
+        expect(screen.getByTestId('loading')).toBeInTheDocument()
+
+        // Act
+        rerender(<List {...props2} />)
+
+        // Assert
+        expect(screen.queryByTestId('loading')).not.toBeInTheDocument()
+        expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+      })
+
+      it('should transition from loading to file list', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props1 = createDefaultProps({ isLoading: true, fileList: [] })
+        const props2 = createDefaultProps({ isLoading: false, fileList })
+
+        const { rerender } = render(<List {...props1} />)
+
+        // Assert initial loading state
+        expect(screen.getByTestId('loading')).toBeInTheDocument()
+
+        // Act
+        rerender(<List {...props2} />)
+
+        // Assert
+        expect(screen.queryByTestId('loading')).not.toBeInTheDocument()
+        expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+      })
+
+      it('should transition from partial loading to loaded', () => {
+        // Arrange
+        const fileList = createMockFileList(2)
+        const props1 = createDefaultProps({ isLoading: true, fileList })
+        const props2 = createDefaultProps({ isLoading: false, fileList })
+
+        const { rerender, container } = render(<List {...props1} />)
+
+        // Assert initial partial loading state
+        expect(container.querySelector('.animation-spin')).toBeInTheDocument()
+
+        // Act
+        rerender(<List {...props2} />)
+
+        // Assert
+        expect(container.querySelector('.animation-spin')).not.toBeInTheDocument()
+      })
+    })
+
+    describe('Store State Edge Cases', () => {
+      it('should handle store state with empty next page parameters', () => {
+        // Arrange
+        mockIsTruncated.current = true
+        mockCurrentNextPageParametersRef.current = {}
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: false,
+        })
+        render(<List {...props} />)
+
+        // Act
+        triggerIntersection(true)
+
+        // Assert
+        expect(mockSetNextPageParameters).toHaveBeenCalledWith({})
+      })
+
+      it('should handle store state with complex next page parameters', () => {
+        // Arrange
+        const complexParams = {
+          cursor: 'abc123',
+          page: 2,
+          metadata: { nested: { value: true } },
+        }
+        mockIsTruncated.current = true
+        mockCurrentNextPageParametersRef.current = complexParams
+        const fileList = createMockFileList(2)
+        const props = createDefaultProps({
+          fileList,
+          isLoading: false,
+        })
+        render(<List {...props} />)
+
+        // Act
+        triggerIntersection(true)
+
+        // Assert
+        expect(mockSetNextPageParameters).toHaveBeenCalledWith(complexParams)
+      })
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { supportBatchUpload: true },
+      { supportBatchUpload: false },
+    ])('should render correctly with supportBatchUpload=$supportBatchUpload', ({ supportBatchUpload }) => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props = createDefaultProps({ fileList, supportBatchUpload })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('item-file-1')).toHaveAttribute(
+        'data-multiple-choice',
+        String(supportBatchUpload),
+      )
+    })
+
+    it.each([
+      { isLoading: true, fileCount: 0, keywords: '', expectedState: 'all-loading' },
+      { isLoading: true, fileCount: 5, keywords: '', expectedState: 'partial-loading' },
+      { isLoading: false, fileCount: 0, keywords: '', expectedState: 'empty-folder' },
+      { isLoading: false, fileCount: 0, keywords: 'search', expectedState: 'empty-search' },
+      { isLoading: false, fileCount: 5, keywords: '', expectedState: 'file-list' },
+    ])('should render $expectedState when isLoading=$isLoading, fileCount=$fileCount, keywords=$keywords',
+      ({ isLoading, fileCount, keywords, expectedState }) => {
+        // Arrange
+        const fileList = createMockFileList(fileCount)
+        const props = createDefaultProps({ fileList, isLoading, keywords })
+
+        // Act
+        const { container } = render(<List {...props} />)
+
+        // Assert
+        switch (expectedState) {
+          case 'all-loading':
+            expect(screen.getByTestId('loading')).toBeInTheDocument()
+            break
+          case 'partial-loading':
+            expect(container.querySelector('.animation-spin')).toBeInTheDocument()
+            break
+          case 'empty-folder':
+            expect(screen.getByTestId('empty-folder')).toBeInTheDocument()
+            break
+          case 'empty-search':
+            expect(screen.getByTestId('empty-search-result')).toBeInTheDocument()
+            break
+          case 'file-list':
+            expect(screen.getByTestId('item-file-1')).toBeInTheDocument()
+            break
+        }
+      })
+
+    it.each([
+      { selectedCount: 0, expectedSelected: [] },
+      { selectedCount: 1, expectedSelected: ['file-1'] },
+      { selectedCount: 3, expectedSelected: ['file-1', 'file-2', 'file-3'] },
+    ])('should handle $selectedCount selected files', ({ expectedSelected }) => {
+      // Arrange
+      const fileList = createMockFileList(3)
+      const props = createDefaultProps({
+        fileList,
+        selectedFileIds: expectedSelected,
+      })
+
+      // Act
+      render(<List {...props} />)
+
+      // Assert
+      fileList.forEach((file) => {
+        const isSelected = expectedSelected.includes(file.id)
+        expect(screen.getByTestId(`item-${file.id}`)).toHaveAttribute('data-selected', String(isSelected))
+      })
+    })
+  })
+
+  // ==========================================
+  // Accessibility Tests
+  // ==========================================
+  describe('Accessibility', () => {
+    it('should have proper container structure', () => {
+      // Arrange
+      const fileList = createMockFileList(2)
+      const props = createDefaultProps({ fileList })
+
+      // Act
+      const { container } = render(<List {...props} />)
+
+      // Assert - Container should be scrollable
+      const scrollContainer = container.querySelector('.overflow-y-auto')
+      expect(scrollContainer).toBeInTheDocument()
+    })
+
+    it('should allow interaction with reset keywords button in empty search state', () => {
+      // Arrange
+      const handleResetKeywords = jest.fn()
+      const props = createDefaultProps({
+        fileList: [],
+        keywords: 'search-term',
+        handleResetKeywords,
+      })
+
+      // Act
+      render(<List {...props} />)
+      const resetButton = screen.getByTestId('reset-keywords-btn')
+
+      // Assert
+      expect(resetButton).toBeInTheDocument()
+      fireEvent.click(resetButton)
+      expect(handleResetKeywords).toHaveBeenCalled()
+    })
+  })
+})
+
+// ==========================================
+// EmptyFolder Component Tests (using actual component)
+// ==========================================
+describe('EmptyFolder', () => {
+  // Get real component for testing
+  const ActualEmptyFolder = jest.requireActual('./empty-folder').default
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      render(<ActualEmptyFolder />)
+      expect(document.body).toBeInTheDocument()
+    })
+
+    it('should render empty folder message', () => {
+      render(<ActualEmptyFolder />)
+      expect(screen.getByText(/datasetPipeline\.onlineDrive\.emptyFolder/)).toBeInTheDocument()
+    })
+
+    it('should render with correct container classes', () => {
+      const { container } = render(<ActualEmptyFolder />)
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass('flex', 'size-full', 'items-center', 'justify-center')
+    })
+
+    it('should render text with correct styling classes', () => {
+      render(<ActualEmptyFolder />)
+      const textElement = screen.getByText(/datasetPipeline\.onlineDrive\.emptyFolder/)
+      expect(textElement).toHaveClass('system-xs-regular', 'text-text-tertiary')
+    })
+  })
+
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      expect(ActualEmptyFolder).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+  })
+
+  describe('Accessibility', () => {
+    it('should have readable text content', () => {
+      render(<ActualEmptyFolder />)
+      const textElement = screen.getByText(/datasetPipeline\.onlineDrive\.emptyFolder/)
+      expect(textElement.tagName).toBe('SPAN')
+    })
+  })
+})
+
+// ==========================================
+// EmptySearchResult Component Tests (using actual component)
+// ==========================================
+describe('EmptySearchResult', () => {
+  // Get real component for testing
+  const ActualEmptySearchResult = jest.requireActual('./empty-search-result').default
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      const onResetKeywords = jest.fn()
+      render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      expect(document.body).toBeInTheDocument()
+    })
+
+    it('should render empty search result message', () => {
+      const onResetKeywords = jest.fn()
+      render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      expect(screen.getByText(/datasetPipeline\.onlineDrive\.emptySearchResult/)).toBeInTheDocument()
+    })
+
+    it('should render reset keywords button', () => {
+      const onResetKeywords = jest.fn()
+      render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      expect(screen.getByRole('button')).toBeInTheDocument()
+      expect(screen.getByText(/datasetPipeline\.onlineDrive\.resetKeywords/)).toBeInTheDocument()
+    })
+
+    it('should render search icon', () => {
+      const onResetKeywords = jest.fn()
+      const { container } = render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      const svgElement = container.querySelector('svg')
+      expect(svgElement).toBeInTheDocument()
+    })
+
+    it('should render with correct container classes', () => {
+      const onResetKeywords = jest.fn()
+      const { container } = render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass('flex', 'size-full', 'flex-col', 'items-center', 'justify-center', 'gap-y-2')
+    })
+  })
+
+  describe('Props', () => {
+    describe('onResetKeywords prop', () => {
+      it('should call onResetKeywords when button is clicked', () => {
+        const onResetKeywords = jest.fn()
+        render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+        fireEvent.click(screen.getByRole('button'))
+        expect(onResetKeywords).toHaveBeenCalledTimes(1)
+      })
+
+      it('should call onResetKeywords on each click', () => {
+        const onResetKeywords = jest.fn()
+        render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+        const button = screen.getByRole('button')
+        fireEvent.click(button)
+        fireEvent.click(button)
+        fireEvent.click(button)
+        expect(onResetKeywords).toHaveBeenCalledTimes(3)
+      })
+    })
+  })
+
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      expect(ActualEmptySearchResult).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+  })
+
+  describe('Accessibility', () => {
+    it('should have accessible button', () => {
+      const onResetKeywords = jest.fn()
+      render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should have readable text content', () => {
+      const onResetKeywords = jest.fn()
+      render(<ActualEmptySearchResult onResetKeywords={onResetKeywords} />)
+      expect(screen.getByText(/datasetPipeline\.onlineDrive\.emptySearchResult/)).toBeInTheDocument()
+    })
+  })
+})
+
+// ==========================================
+// FileIcon Component Tests (using actual component)
+// ==========================================
+describe('FileIcon', () => {
+  // Get real component for testing
+  const ActualFileIcon = jest.requireActual('./file-icon').default
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName="test.txt" />,
+      )
+      expect(container).toBeInTheDocument()
+    })
+
+    it('should render bucket icon for bucket type', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.bucket} fileName="my-bucket" />,
+      )
+      const svg = container.querySelector('svg')
+      expect(svg).toBeInTheDocument()
+    })
+
+    it('should render folder icon for folder type', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.folder} fileName="Documents" />,
+      )
+      const svg = container.querySelector('svg')
+      expect(svg).toBeInTheDocument()
+    })
+
+    it('should render file type icon for file type', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName="document.pdf" />,
+      )
+      expect(container.firstChild).toBeInTheDocument()
+    })
+  })
+
+  describe('Props', () => {
+    describe('type prop', () => {
+      it.each([
+        { type: OnlineDriveFileType.bucket, fileName: 'bucket-name' },
+        { type: OnlineDriveFileType.folder, fileName: 'folder-name' },
+        { type: OnlineDriveFileType.file, fileName: 'file.txt' },
+      ])('should render correctly for type=$type', ({ type, fileName }) => {
+        const { container } = render(
+          <ActualFileIcon type={type} fileName={fileName} />,
+        )
+        expect(container.firstChild).toBeInTheDocument()
+      })
+    })
+
+    describe('fileName prop', () => {
+      it.each([
+        { fileName: 'document.pdf' },
+        { fileName: 'image.png' },
+        { fileName: 'video.mp4' },
+        { fileName: 'audio.mp3' },
+        { fileName: 'code.json' },
+        { fileName: 'readme.md' },
+        { fileName: 'data.xlsx' },
+        { fileName: 'doc.docx' },
+        { fileName: 'slides.pptx' },
+        { fileName: 'unknown.xyz' },
+      ])('should render icon for $fileName', ({ fileName }) => {
+        const { container } = render(
+          <ActualFileIcon type={OnlineDriveFileType.file} fileName={fileName} />,
+        )
+        expect(container.firstChild).toBeInTheDocument()
+      })
+    })
+
+    describe('size prop', () => {
+      it.each(['sm', 'md', 'lg', 'xl'] as const)('should accept size=%s', (size) => {
+        const { container } = render(
+          <ActualFileIcon type={OnlineDriveFileType.file} fileName="test.pdf" size={size} />,
+        )
+        expect(container.firstChild).toBeInTheDocument()
+      })
+
+      it('should default to md size', () => {
+        const { container } = render(
+          <ActualFileIcon type={OnlineDriveFileType.file} fileName="test.pdf" />,
+        )
+        expect(container.firstChild).toBeInTheDocument()
+      })
+    })
+
+    describe('className prop', () => {
+      it('should apply custom className to bucket icon', () => {
+        const { container } = render(
+          <ActualFileIcon type={OnlineDriveFileType.bucket} fileName="bucket" className="custom-class" />,
+        )
+        const svg = container.querySelector('svg')
+        expect(svg).toHaveClass('custom-class')
+      })
+
+      it('should apply className to folder icon', () => {
+        const { container } = render(
+          <ActualFileIcon type={OnlineDriveFileType.folder} fileName="folder" className="folder-custom" />,
+        )
+        const svg = container.querySelector('svg')
+        expect(svg).toHaveClass('folder-custom')
+      })
+    })
+  })
+
+  describe('Icon Type Determination', () => {
+    it('should render bucket icon regardless of fileName', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.bucket} fileName="file.pdf" />,
+      )
+      const svg = container.querySelector('svg')
+      expect(svg).toBeInTheDocument()
+    })
+
+    it('should render folder icon regardless of fileName', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.folder} fileName="document.pdf" />,
+      )
+      const svg = container.querySelector('svg')
+      expect(svg).toBeInTheDocument()
+    })
+
+    it('should determine file type based on fileName extension', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName="image.gif" />,
+      )
+      expect(container.firstChild).toBeInTheDocument()
+    })
+  })
+
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      expect(ActualFileIcon).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+  })
+
+  describe('Edge Cases', () => {
+    it('should handle empty fileName', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName="" />,
+      )
+      expect(container.firstChild).toBeInTheDocument()
+    })
+
+    it('should handle fileName without extension', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName="README" />,
+      )
+      expect(container.firstChild).toBeInTheDocument()
+    })
+
+    it('should handle special characters in fileName', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName="文件 (1).pdf" />,
+      )
+      expect(container.firstChild).toBeInTheDocument()
+    })
+
+    it('should handle very long fileName', () => {
+      const longFileName = `${'a'.repeat(500)}.pdf`
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.file} fileName={longFileName} />,
+      )
+      expect(container.firstChild).toBeInTheDocument()
+    })
+  })
+
+  describe('Styling', () => {
+    it('should apply default size class to bucket icon', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.bucket} fileName="bucket" />,
+      )
+      const svg = container.querySelector('svg')
+      expect(svg).toHaveClass('size-[18px]')
+    })
+
+    it('should apply default size class to folder icon', () => {
+      const { container } = render(
+        <ActualFileIcon type={OnlineDriveFileType.folder} fileName="folder" />,
+      )
+      const svg = container.querySelector('svg')
+      expect(svg).toHaveClass('size-[18px]')
+    })
+  })
+})
+
+// ==========================================
+// Item Component Tests (using actual component)
+// ==========================================
+describe('Item', () => {
+  // Get real component for testing
+  const ActualItem = jest.requireActual('./item').default
+
+  type ItemProps = {
+    file: OnlineDriveFile
+    isSelected: boolean
+    disabled?: boolean
+    isMultipleChoice?: boolean
+    onSelect: (file: OnlineDriveFile) => void
+    onOpen: (file: OnlineDriveFile) => void
+  }
+
+  // Reuse createMockOnlineDriveFile from outer scope
+  const createItemProps = (overrides?: Partial<ItemProps>): ItemProps => ({
+    file: createMockOnlineDriveFile(),
+    isSelected: false,
+    onSelect: jest.fn(),
+    onOpen: jest.fn(),
+    ...overrides,
+  })
+
+  // Helper to find custom checkbox element (div-based implementation)
+  const findCheckbox = (container: HTMLElement) => container.querySelector('[data-testid^="checkbox-"]')
+  // Helper to find custom radio element (div-based implementation)
+  const findRadio = (container: HTMLElement) => container.querySelector('.rounded-full.size-4')
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      const props = createItemProps()
+      render(<ActualItem {...props} />)
+      expect(screen.getByText('test-file.txt')).toBeInTheDocument()
+    })
+
+    it('should render file name', () => {
+      const props = createItemProps({
+        file: createMockOnlineDriveFile({ name: 'document.pdf' }),
+      })
+      render(<ActualItem {...props} />)
+      expect(screen.getByText('document.pdf')).toBeInTheDocument()
+    })
+
+    it('should render file size for file type', () => {
+      const props = createItemProps({
+        file: createMockOnlineDriveFile({ size: 1024, type: OnlineDriveFileType.file }),
+      })
+      render(<ActualItem {...props} />)
+      expect(screen.getByText('1.00 KB')).toBeInTheDocument()
+    })
+
+    it('should not render file size for folder type', () => {
+      const props = createItemProps({
+        file: createMockOnlineDriveFile({ size: 1024, type: OnlineDriveFileType.folder, name: 'Documents' }),
+      })
+      render(<ActualItem {...props} />)
+      expect(screen.queryByText('1 KB')).not.toBeInTheDocument()
+    })
+
+    it('should render checkbox in multiple choice mode for file', () => {
+      const props = createItemProps({
+        isMultipleChoice: true,
+        file: createMockOnlineDriveFile({ type: OnlineDriveFileType.file }),
+      })
+      const { container } = render(<ActualItem {...props} />)
+      expect(findCheckbox(container)).toBeInTheDocument()
+    })
+
+    it('should render radio in single choice mode for file', () => {
+      const props = createItemProps({
+        isMultipleChoice: false,
+        file: createMockOnlineDriveFile({ type: OnlineDriveFileType.file }),
+      })
+      const { container } = render(<ActualItem {...props} />)
+      expect(findRadio(container)).toBeInTheDocument()
+    })
+
+    it('should not render checkbox or radio for bucket type', () => {
+      const props = createItemProps({
+        file: createMockOnlineDriveFile({ type: OnlineDriveFileType.bucket, name: 'my-bucket' }),
+        isMultipleChoice: true,
+      })
+      const { container } = render(<ActualItem {...props} />)
+      expect(findCheckbox(container)).not.toBeInTheDocument()
+      expect(findRadio(container)).not.toBeInTheDocument()
+    })
+
+    it('should render with title attribute for file name', () => {
+      const props = createItemProps({
+        file: createMockOnlineDriveFile({ name: 'very-long-file-name.txt' }),
+      })
+      render(<ActualItem {...props} />)
+      expect(screen.getByTitle('very-long-file-name.txt')).toBeInTheDocument()
+    })
+  })
+
+  describe('Props', () => {
+    describe('isSelected prop', () => {
+      it('should show checkbox as checked when isSelected is true', () => {
+        const props = createItemProps({ isSelected: true, isMultipleChoice: true })
+        const { container } = render(<ActualItem {...props} />)
+        const checkbox = findCheckbox(container)
+        // Checked checkbox shows check icon
+        expect(checkbox?.querySelector('[data-testid^="check-icon-"]')).toBeInTheDocument()
+      })
+
+      it('should show checkbox as unchecked when isSelected is false', () => {
+        const props = createItemProps({ isSelected: false, isMultipleChoice: true })
+        const { container } = render(<ActualItem {...props} />)
+        const checkbox = findCheckbox(container)
+        // Unchecked checkbox has no check icon
+        expect(checkbox?.querySelector('[data-testid^="check-icon-"]')).not.toBeInTheDocument()
+      })
+
+      it('should show radio as checked when isSelected is true', () => {
+        const props = createItemProps({ isSelected: true, isMultipleChoice: false })
+        const { container } = render(<ActualItem {...props} />)
+        const radio = findRadio(container)
+        // Checked radio has border-[5px] class
+        expect(radio).toHaveClass('border-[5px]')
+      })
+    })
+
+    describe('disabled prop', () => {
+      it('should apply opacity class when disabled', () => {
+        const props = createItemProps({ disabled: true })
+        const { container } = render(<ActualItem {...props} />)
+        expect(container.querySelector('.opacity-30')).toBeInTheDocument()
+      })
+
+      it('should apply disabled styles to checkbox when disabled', () => {
+        const props = createItemProps({ disabled: true, isMultipleChoice: true })
+        const { container } = render(<ActualItem {...props} />)
+        const checkbox = findCheckbox(container)
+        expect(checkbox).toHaveClass('cursor-not-allowed')
+      })
+
+      it('should apply disabled styles to radio when disabled', () => {
+        const props = createItemProps({ disabled: true, isMultipleChoice: false })
+        const { container } = render(<ActualItem {...props} />)
+        const radio = findRadio(container)
+        expect(radio).toHaveClass('border-components-radio-border-disabled')
+      })
+    })
+
+    describe('isMultipleChoice prop', () => {
+      it('should default to true', () => {
+        const props = createItemProps()
+        delete (props as Partial<ItemProps>).isMultipleChoice
+        const { container } = render(<ActualItem {...props} />)
+        expect(findCheckbox(container)).toBeInTheDocument()
+      })
+
+      it('should render checkbox when true', () => {
+        const props = createItemProps({ isMultipleChoice: true })
+        const { container } = render(<ActualItem {...props} />)
+        expect(findCheckbox(container)).toBeInTheDocument()
+        expect(findRadio(container)).not.toBeInTheDocument()
+      })
+
+      it('should render radio when false', () => {
+        const props = createItemProps({ isMultipleChoice: false })
+        const { container } = render(<ActualItem {...props} />)
+        expect(findRadio(container)).toBeInTheDocument()
+        expect(findCheckbox(container)).not.toBeInTheDocument()
+      })
+    })
+  })
+
+  describe('User Interactions', () => {
+    describe('Click on Item', () => {
+      it('should call onSelect when clicking on file item', () => {
+        const onSelect = jest.fn()
+        const file = createMockOnlineDriveFile({ type: OnlineDriveFileType.file })
+        const props = createItemProps({ file, onSelect })
+        render(<ActualItem {...props} />)
+        fireEvent.click(screen.getByText('test-file.txt'))
+        expect(onSelect).toHaveBeenCalledWith(file)
+      })
+
+      it('should call onOpen when clicking on folder item', () => {
+        const onOpen = jest.fn()
+        const file = createMockOnlineDriveFile({ type: OnlineDriveFileType.folder, name: 'Documents' })
+        const props = createItemProps({ file, onOpen })
+        render(<ActualItem {...props} />)
+        fireEvent.click(screen.getByText('Documents'))
+        expect(onOpen).toHaveBeenCalledWith(file)
+      })
+
+      it('should call onOpen when clicking on bucket item', () => {
+        const onOpen = jest.fn()
+        const file = createMockOnlineDriveFile({ type: OnlineDriveFileType.bucket, name: 'my-bucket' })
+        const props = createItemProps({ file, onOpen })
+        render(<ActualItem {...props} />)
+        fireEvent.click(screen.getByText('my-bucket'))
+        expect(onOpen).toHaveBeenCalledWith(file)
+      })
+
+      it('should not call any handler when clicking disabled item', () => {
+        const onSelect = jest.fn()
+        const onOpen = jest.fn()
+        const props = createItemProps({ disabled: true, onSelect, onOpen })
+        render(<ActualItem {...props} />)
+        fireEvent.click(screen.getByText('test-file.txt'))
+        expect(onSelect).not.toHaveBeenCalled()
+        expect(onOpen).not.toHaveBeenCalled()
+      })
+    })
+
+    describe('Click on Checkbox/Radio', () => {
+      it('should call onSelect when clicking checkbox', () => {
+        const onSelect = jest.fn()
+        const file = createMockOnlineDriveFile()
+        const props = createItemProps({ file, onSelect, isMultipleChoice: true })
+        const { container } = render(<ActualItem {...props} />)
+        const checkbox = findCheckbox(container)
+        fireEvent.click(checkbox!)
+        expect(onSelect).toHaveBeenCalledWith(file)
+      })
+
+      it('should call onSelect when clicking radio', () => {
+        const onSelect = jest.fn()
+        const file = createMockOnlineDriveFile()
+        const props = createItemProps({ file, onSelect, isMultipleChoice: false })
+        const { container } = render(<ActualItem {...props} />)
+        const radio = findRadio(container)
+        fireEvent.click(radio!)
+        expect(onSelect).toHaveBeenCalledWith(file)
+      })
+
+      it('should stop event propagation when clicking checkbox', () => {
+        const onSelect = jest.fn()
+        const file = createMockOnlineDriveFile()
+        const props = createItemProps({ file, onSelect, isMultipleChoice: true })
+        const { container } = render(<ActualItem {...props} />)
+        const checkbox = findCheckbox(container)
+        fireEvent.click(checkbox!)
+        expect(onSelect).toHaveBeenCalledTimes(1)
+      })
+    })
+  })
+
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      expect(ActualItem).toHaveProperty('$$typeof', Symbol.for('react.memo'))
+    })
+  })
+
+  describe('Edge Cases', () => {
+    it('should handle empty file name', () => {
+      const props = createItemProps({ file: createMockOnlineDriveFile({ name: '' }) })
+      render(<ActualItem {...props} />)
+      expect(document.body).toBeInTheDocument()
+    })
+
+    it('should handle very long file name', () => {
+      const longName = `${'a'.repeat(500)}.txt`
+      const props = createItemProps({ file: createMockOnlineDriveFile({ name: longName }) })
+      render(<ActualItem {...props} />)
+      expect(screen.getByText(longName)).toBeInTheDocument()
+    })
+
+    it('should handle special characters in file name', () => {
+      const specialName = '文件 <test> (1).pdf'
+      const props = createItemProps({ file: createMockOnlineDriveFile({ name: specialName }) })
+      render(<ActualItem {...props} />)
+      expect(screen.getByText(specialName)).toBeInTheDocument()
+    })
+
+    it('should handle zero file size', () => {
+      const props = createItemProps({ file: createMockOnlineDriveFile({ size: 0 }) })
+      render(<ActualItem {...props} />)
+      // formatFileSize returns 0 for size 0
+      expect(screen.getByText('0')).toBeInTheDocument()
+    })
+
+    it('should handle very large file size', () => {
+      const props = createItemProps({ file: createMockOnlineDriveFile({ size: 1024 * 1024 * 1024 * 5 }) })
+      render(<ActualItem {...props} />)
+      expect(screen.getByText('5.00 GB')).toBeInTheDocument()
+    })
+  })
+
+  describe('Styling', () => {
+    it('should have cursor-pointer class', () => {
+      const props = createItemProps()
+      const { container } = render(<ActualItem {...props} />)
+      expect(container.firstChild).toHaveClass('cursor-pointer')
+    })
+
+    it('should have hover class', () => {
+      const props = createItemProps()
+      const { container } = render(<ActualItem {...props} />)
+      expect(container.firstChild).toHaveClass('hover:bg-state-base-hover')
+    })
+
+    it('should truncate file name', () => {
+      const props = createItemProps()
+      render(<ActualItem {...props} />)
+      const nameElement = screen.getByText('test-file.txt')
+      expect(nameElement).toHaveClass('truncate')
+    })
+  })
+
+  describe('Prop Variations', () => {
+    it.each([
+      { isSelected: true, isMultipleChoice: true, disabled: false },
+      { isSelected: true, isMultipleChoice: false, disabled: false },
+      { isSelected: false, isMultipleChoice: true, disabled: false },
+      { isSelected: false, isMultipleChoice: false, disabled: false },
+      { isSelected: true, isMultipleChoice: true, disabled: true },
+      { isSelected: false, isMultipleChoice: false, disabled: true },
+    ])('should render with isSelected=$isSelected, isMultipleChoice=$isMultipleChoice, disabled=$disabled',
+      ({ isSelected, isMultipleChoice, disabled }) => {
+        const props = createItemProps({ isSelected, isMultipleChoice, disabled })
+        const { container } = render(<ActualItem {...props} />)
+        if (isMultipleChoice) {
+          const checkbox = findCheckbox(container)
+          expect(checkbox).toBeInTheDocument()
+          if (isSelected)
+            expect(checkbox?.querySelector('[data-testid^="check-icon-"]')).toBeInTheDocument()
+          if (disabled)
+            expect(checkbox).toHaveClass('cursor-not-allowed')
+        }
+        else {
+          const radio = findRadio(container)
+          expect(radio).toBeInTheDocument()
+          if (isSelected)
+            expect(radio).toHaveClass('border-[5px]')
+          if (disabled)
+            expect(radio).toHaveClass('border-components-radio-border-disabled')
+        }
+      })
+  })
+})
+
+// ==========================================
+// Utils Tests
+// ==========================================
+describe('utils', () => {
+  // Import actual utils functions
+  const { getFileExtension, getFileType } = jest.requireActual('./utils')
+  const { FileAppearanceTypeEnum } = jest.requireActual('@/app/components/base/file-uploader/types')
+
+  describe('getFileExtension', () => {
+    describe('Basic Functionality', () => {
+      it('should return file extension for normal file names', () => {
+        expect(getFileExtension('document.pdf')).toBe('pdf')
+        expect(getFileExtension('image.PNG')).toBe('png')
+        expect(getFileExtension('data.JSON')).toBe('json')
+      })
+
+      it('should return lowercase extension', () => {
+        expect(getFileExtension('FILE.PDF')).toBe('pdf')
+        expect(getFileExtension('IMAGE.JPEG')).toBe('jpeg')
+        expect(getFileExtension('Doc.TXT')).toBe('txt')
+      })
+
+      it('should handle multiple dots in filename', () => {
+        expect(getFileExtension('file.backup.tar.gz')).toBe('gz')
+        expect(getFileExtension('my.document.v2.pdf')).toBe('pdf')
+        expect(getFileExtension('test.spec.ts')).toBe('ts')
+      })
+    })
+
+    describe('Edge Cases', () => {
+      it('should return empty string for empty filename', () => {
+        expect(getFileExtension('')).toBe('')
+      })
+
+      it('should return empty string for filename without extension', () => {
+        expect(getFileExtension('README')).toBe('')
+        expect(getFileExtension('Makefile')).toBe('')
+      })
+
+      it('should return empty string for hidden files without extension', () => {
+        expect(getFileExtension('.gitignore')).toBe('')
+        expect(getFileExtension('.env')).toBe('')
+      })
+
+      it('should handle hidden files with extension', () => {
+        expect(getFileExtension('.eslintrc.json')).toBe('json')
+        expect(getFileExtension('.config.yaml')).toBe('yaml')
+      })
+
+      it('should handle files ending with dot', () => {
+        expect(getFileExtension('file.')).toBe('')
+      })
+
+      it('should handle special characters in filename', () => {
+        expect(getFileExtension('file-name_v1.0.pdf')).toBe('pdf')
+        expect(getFileExtension('data (1).xlsx')).toBe('xlsx')
+      })
+    })
+
+    describe('Boundary Conditions', () => {
+      it('should handle very long file extensions', () => {
+        expect(getFileExtension('file.verylongextension')).toBe('verylongextension')
+      })
+
+      it('should handle single character extensions', () => {
+        expect(getFileExtension('file.a')).toBe('a')
+        expect(getFileExtension('data.c')).toBe('c')
+      })
+
+      it('should handle numeric extensions', () => {
+        expect(getFileExtension('file.001')).toBe('001')
+        expect(getFileExtension('backup.123')).toBe('123')
+      })
+    })
+  })
+
+  describe('getFileType', () => {
+    describe('Image Files', () => {
+      it('should return gif type for gif files', () => {
+        expect(getFileType('animation.gif')).toBe(FileAppearanceTypeEnum.gif)
+        expect(getFileType('image.GIF')).toBe(FileAppearanceTypeEnum.gif)
+      })
+
+      it('should return image type for common image formats', () => {
+        expect(getFileType('photo.jpg')).toBe(FileAppearanceTypeEnum.image)
+        expect(getFileType('photo.jpeg')).toBe(FileAppearanceTypeEnum.image)
+        expect(getFileType('photo.png')).toBe(FileAppearanceTypeEnum.image)
+        expect(getFileType('photo.webp')).toBe(FileAppearanceTypeEnum.image)
+        expect(getFileType('photo.svg')).toBe(FileAppearanceTypeEnum.image)
+      })
+    })
+
+    describe('Video Files', () => {
+      it('should return video type for video formats', () => {
+        expect(getFileType('movie.mp4')).toBe(FileAppearanceTypeEnum.video)
+        expect(getFileType('clip.mov')).toBe(FileAppearanceTypeEnum.video)
+        expect(getFileType('video.webm')).toBe(FileAppearanceTypeEnum.video)
+        expect(getFileType('recording.mpeg')).toBe(FileAppearanceTypeEnum.video)
+      })
+    })
+
+    describe('Audio Files', () => {
+      it('should return audio type for audio formats', () => {
+        expect(getFileType('song.mp3')).toBe(FileAppearanceTypeEnum.audio)
+        expect(getFileType('podcast.wav')).toBe(FileAppearanceTypeEnum.audio)
+        expect(getFileType('audio.m4a')).toBe(FileAppearanceTypeEnum.audio)
+        expect(getFileType('music.mpga')).toBe(FileAppearanceTypeEnum.audio)
+      })
+    })
+
+    describe('Code Files', () => {
+      it('should return code type for code-related formats', () => {
+        expect(getFileType('page.html')).toBe(FileAppearanceTypeEnum.code)
+        expect(getFileType('page.htm')).toBe(FileAppearanceTypeEnum.code)
+        expect(getFileType('config.xml')).toBe(FileAppearanceTypeEnum.code)
+        expect(getFileType('data.json')).toBe(FileAppearanceTypeEnum.code)
+      })
+    })
+
+    describe('Document Files', () => {
+      it('should return pdf type for PDF files', () => {
+        expect(getFileType('document.pdf')).toBe(FileAppearanceTypeEnum.pdf)
+        expect(getFileType('report.PDF')).toBe(FileAppearanceTypeEnum.pdf)
+      })
+
+      it('should return markdown type for markdown files', () => {
+        expect(getFileType('README.md')).toBe(FileAppearanceTypeEnum.markdown)
+        expect(getFileType('doc.markdown')).toBe(FileAppearanceTypeEnum.markdown)
+        expect(getFileType('guide.mdx')).toBe(FileAppearanceTypeEnum.markdown)
+      })
+
+      it('should return excel type for spreadsheet files', () => {
+        expect(getFileType('data.xlsx')).toBe(FileAppearanceTypeEnum.excel)
+        expect(getFileType('data.xls')).toBe(FileAppearanceTypeEnum.excel)
+        expect(getFileType('data.csv')).toBe(FileAppearanceTypeEnum.excel)
+      })
+
+      it('should return word type for Word documents', () => {
+        expect(getFileType('document.docx')).toBe(FileAppearanceTypeEnum.word)
+        expect(getFileType('document.doc')).toBe(FileAppearanceTypeEnum.word)
+      })
+
+      it('should return ppt type for PowerPoint files', () => {
+        expect(getFileType('presentation.pptx')).toBe(FileAppearanceTypeEnum.ppt)
+        expect(getFileType('slides.ppt')).toBe(FileAppearanceTypeEnum.ppt)
+      })
+
+      it('should return document type for text files', () => {
+        expect(getFileType('notes.txt')).toBe(FileAppearanceTypeEnum.document)
+      })
+    })
+
+    describe('Unknown Files', () => {
+      it('should return custom type for unknown extensions', () => {
+        expect(getFileType('file.xyz')).toBe(FileAppearanceTypeEnum.custom)
+        expect(getFileType('data.unknown')).toBe(FileAppearanceTypeEnum.custom)
+        expect(getFileType('binary.bin')).toBe(FileAppearanceTypeEnum.custom)
+      })
+
+      it('should return custom type for files without extension', () => {
+        expect(getFileType('README')).toBe(FileAppearanceTypeEnum.custom)
+        expect(getFileType('Makefile')).toBe(FileAppearanceTypeEnum.custom)
+      })
+
+      it('should return custom type for empty filename', () => {
+        expect(getFileType('')).toBe(FileAppearanceTypeEnum.custom)
+      })
+    })
+
+    describe('Case Insensitivity', () => {
+      it('should handle uppercase extensions', () => {
+        expect(getFileType('file.PDF')).toBe(FileAppearanceTypeEnum.pdf)
+        expect(getFileType('file.DOCX')).toBe(FileAppearanceTypeEnum.word)
+        expect(getFileType('file.XLSX')).toBe(FileAppearanceTypeEnum.excel)
+      })
+
+      it('should handle mixed case extensions', () => {
+        expect(getFileType('file.Pdf')).toBe(FileAppearanceTypeEnum.pdf)
+        expect(getFileType('file.DocX')).toBe(FileAppearanceTypeEnum.word)
+      })
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/index.spec.tsx
new file mode 100644
index 0000000000..125a2192aa
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/online-drive/index.spec.tsx
@@ -0,0 +1,1895 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import React from 'react'
+import OnlineDrive from './index'
+import Header from './header'
+import { convertOnlineDriveData, isBucketListInitiation, isFile } from './utils'
+import type { OnlineDriveFile } from '@/models/pipeline'
+import { DatasourceType, OnlineDriveFileType } from '@/models/pipeline'
+import type { DataSourceNodeType } from '@/app/components/workflow/nodes/data-source/types'
+import { ACCOUNT_SETTING_TAB } from '@/app/components/header/account-setting/constants'
+import type { OnlineDriveData } from '@/types/pipeline'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock useDocLink - context hook requires mocking
+const mockDocLink = jest.fn((path?: string) => `https://docs.example.com${path || ''}`)
+jest.mock('@/context/i18n', () => ({
+  useDocLink: () => mockDocLink,
+}))
+
+// Mock dataset-detail context - context provider requires mocking
+let mockPipelineId: string | undefined = 'pipeline-123'
+jest.mock('@/context/dataset-detail', () => ({
+  useDatasetDetailContextWithSelector: (selector: (s: any) => any) => selector({ dataset: { pipeline_id: mockPipelineId } }),
+}))
+
+// Mock modal context - context provider requires mocking
+const mockSetShowAccountSettingModal = jest.fn()
+jest.mock('@/context/modal-context', () => ({
+  useModalContextSelector: (selector: (s: any) => any) => selector({ setShowAccountSettingModal: mockSetShowAccountSettingModal }),
+}))
+
+// Mock ssePost - API service requires mocking
+const mockSsePost = jest.fn()
+jest.mock('@/service/base', () => ({
+  ssePost: (...args: any[]) => mockSsePost(...args),
+}))
+
+// Mock useGetDataSourceAuth - API service hook requires mocking
+const mockUseGetDataSourceAuth = jest.fn()
+jest.mock('@/service/use-datasource', () => ({
+  useGetDataSourceAuth: (params: any) => mockUseGetDataSourceAuth(params),
+}))
+
+// Mock Toast
+const mockToastNotify = jest.fn()
+jest.mock('@/app/components/base/toast', () => ({
+  __esModule: true,
+  default: {
+    notify: (...args: any[]) => mockToastNotify(...args),
+  },
+}))
+
+// Note: zustand/react/shallow useShallow is imported directly (simple utility function)
+
+// Mock store state
+const mockStoreState = {
+  nextPageParameters: {} as Record<string, any>,
+  breadcrumbs: [] as string[],
+  prefix: [] as string[],
+  keywords: '',
+  bucket: '',
+  selectedFileIds: [] as string[],
+  onlineDriveFileList: [] as OnlineDriveFile[],
+  currentCredentialId: '',
+  isTruncated: { current: false },
+  currentNextPageParametersRef: { current: {} },
+  setOnlineDriveFileList: jest.fn(),
+  setKeywords: jest.fn(),
+  setSelectedFileIds: jest.fn(),
+  setBreadcrumbs: jest.fn(),
+  setPrefix: jest.fn(),
+  setBucket: jest.fn(),
+  setHasBucket: jest.fn(),
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../store', () => ({
+  useDataSourceStoreWithSelector: (selector: (s: any) => any) => selector(mockStoreState),
+  useDataSourceStore: () => mockDataSourceStore,
+}))
+
+// Mock Header component
+jest.mock('../base/header', () => {
+  const MockHeader = (props: any) => (
+    <div data-testid="header">
+      <span data-testid="header-doc-title">{props.docTitle}</span>
+      <span data-testid="header-doc-link">{props.docLink}</span>
+      <span data-testid="header-plugin-name">{props.pluginName}</span>
+      <span data-testid="header-credential-id">{props.currentCredentialId}</span>
+      <button data-testid="header-config-btn" onClick={props.onClickConfiguration}>Configure</button>
+      <button data-testid="header-credential-change" onClick={() => props.onCredentialChange('new-cred-id')}>Change Credential</button>
+      <span data-testid="header-credentials-count">{props.credentials?.length || 0}</span>
+    </div>
+  )
+  return MockHeader
+})
+
+// Mock FileList component
+jest.mock('./file-list', () => {
+  const MockFileList = (props: any) => (
+    <div data-testid="file-list">
+      <span data-testid="file-list-count">{props.fileList?.length || 0}</span>
+      <span data-testid="file-list-selected-count">{props.selectedFileIds?.length || 0}</span>
+      <span data-testid="file-list-breadcrumbs">{props.breadcrumbs?.join('/') || ''}</span>
+      <span data-testid="file-list-keywords">{props.keywords}</span>
+      <span data-testid="file-list-bucket">{props.bucket}</span>
+      <span data-testid="file-list-loading">{String(props.isLoading)}</span>
+      <span data-testid="file-list-is-in-pipeline">{String(props.isInPipeline)}</span>
+      <span data-testid="file-list-support-batch">{String(props.supportBatchUpload)}</span>
+      <input
+        data-testid="file-list-search-input"
+        onChange={e => props.updateKeywords(e.target.value)}
+      />
+      <button data-testid="file-list-reset-keywords" onClick={props.resetKeywords}>Reset</button>
+      <button
+        data-testid="file-list-select-file"
+        onClick={() => {
+          const file: OnlineDriveFile = { id: 'file-1', name: 'test.txt', type: OnlineDriveFileType.file }
+          props.handleSelectFile(file)
+        }}
+      >
+        Select File
+      </button>
+      <button
+        data-testid="file-list-select-bucket"
+        onClick={() => {
+          const file: OnlineDriveFile = { id: 'bucket-1', name: 'my-bucket', type: OnlineDriveFileType.bucket }
+          props.handleSelectFile(file)
+        }}
+      >
+        Select Bucket
+      </button>
+      <button
+        data-testid="file-list-open-folder"
+        onClick={() => {
+          const file: OnlineDriveFile = { id: 'folder-1', name: 'my-folder', type: OnlineDriveFileType.folder }
+          props.handleOpenFolder(file)
+        }}
+      >
+        Open Folder
+      </button>
+      <button
+        data-testid="file-list-open-bucket"
+        onClick={() => {
+          const file: OnlineDriveFile = { id: 'bucket-1', name: 'my-bucket', type: OnlineDriveFileType.bucket }
+          props.handleOpenFolder(file)
+        }}
+      >
+        Open Bucket
+      </button>
+      <button
+        data-testid="file-list-open-file"
+        onClick={() => {
+          const file: OnlineDriveFile = { id: 'file-1', name: 'test.txt', type: OnlineDriveFileType.file }
+          props.handleOpenFolder(file)
+        }}
+      >
+        Open File
+      </button>
+    </div>
+  )
+  return MockFileList
+})
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockNodeData = (overrides?: Partial<DataSourceNodeType>): DataSourceNodeType => ({
+  title: 'Test Node',
+  plugin_id: 'plugin-123',
+  provider_type: 'online_drive',
+  provider_name: 'online-drive-provider',
+  datasource_name: 'online-drive-ds',
+  datasource_label: 'Online Drive',
+  datasource_parameters: {},
+  datasource_configurations: {},
+  ...overrides,
+} as DataSourceNodeType)
+
+const createMockOnlineDriveFile = (overrides?: Partial<OnlineDriveFile>): OnlineDriveFile => ({
+  id: 'file-1',
+  name: 'test-file.txt',
+  size: 1024,
+  type: OnlineDriveFileType.file,
+  ...overrides,
+})
+
+const createMockCredential = (overrides?: Partial<{ id: string; name: string }>) => ({
+  id: 'cred-1',
+  name: 'Test Credential',
+  avatar_url: 'https://example.com/avatar.png',
+  credential: {},
+  is_default: false,
+  type: 'oauth2',
+  ...overrides,
+})
+
+type OnlineDriveProps = React.ComponentProps<typeof OnlineDrive>
+
+const createDefaultProps = (overrides?: Partial<OnlineDriveProps>): OnlineDriveProps => ({
+  nodeId: 'node-1',
+  nodeData: createMockNodeData(),
+  onCredentialChange: jest.fn(),
+  isInPipeline: false,
+  supportBatchUpload: true,
+  ...overrides,
+})
+
+// ==========================================
+// Helper Functions
+// ==========================================
+const resetMockStoreState = () => {
+  mockStoreState.nextPageParameters = {}
+  mockStoreState.breadcrumbs = []
+  mockStoreState.prefix = []
+  mockStoreState.keywords = ''
+  mockStoreState.bucket = ''
+  mockStoreState.selectedFileIds = []
+  mockStoreState.onlineDriveFileList = []
+  mockStoreState.currentCredentialId = ''
+  mockStoreState.isTruncated = { current: false }
+  mockStoreState.currentNextPageParametersRef = { current: {} }
+  mockStoreState.setOnlineDriveFileList = jest.fn()
+  mockStoreState.setKeywords = jest.fn()
+  mockStoreState.setSelectedFileIds = jest.fn()
+  mockStoreState.setBreadcrumbs = jest.fn()
+  mockStoreState.setPrefix = jest.fn()
+  mockStoreState.setBucket = jest.fn()
+  mockStoreState.setHasBucket = jest.fn()
+}
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('OnlineDrive', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+
+    // Reset store state
+    resetMockStoreState()
+
+    // Reset context values
+    mockPipelineId = 'pipeline-123'
+    mockSetShowAccountSettingModal.mockClear()
+
+    // Default mock return values
+    mockUseGetDataSourceAuth.mockReturnValue({
+      data: { result: [createMockCredential()] },
+    })
+
+    mockGetState.mockReturnValue(mockStoreState)
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header')).toBeInTheDocument()
+      expect(screen.getByTestId('file-list')).toBeInTheDocument()
+    })
+
+    it('should render Header with correct props', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-123'
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ datasource_label: 'My Online Drive' }),
+      })
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-doc-title')).toHaveTextContent('Docs')
+      expect(screen.getByTestId('header-plugin-name')).toHaveTextContent('My Online Drive')
+      expect(screen.getByTestId('header-credential-id')).toHaveTextContent('cred-123')
+    })
+
+    it('should render FileList with correct props', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.keywords = 'search-term'
+      mockStoreState.breadcrumbs = ['folder1', 'folder2']
+      mockStoreState.bucket = 'my-bucket'
+      mockStoreState.selectedFileIds = ['file-1', 'file-2']
+      mockStoreState.onlineDriveFileList = [
+        createMockOnlineDriveFile({ id: 'file-1', name: 'file1.txt' }),
+        createMockOnlineDriveFile({ id: 'file-2', name: 'file2.txt' }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list')).toBeInTheDocument()
+      expect(screen.getByTestId('file-list-keywords')).toHaveTextContent('search-term')
+      expect(screen.getByTestId('file-list-breadcrumbs')).toHaveTextContent('folder1/folder2')
+      expect(screen.getByTestId('file-list-bucket')).toHaveTextContent('my-bucket')
+      expect(screen.getByTestId('file-list-selected-count')).toHaveTextContent('2')
+    })
+
+    it('should pass docLink with correct path to Header', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(mockDocLink).toHaveBeenCalledWith('/guides/knowledge-base/knowledge-pipeline/authorize-data-source')
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('nodeId prop', () => {
+      it('should use nodeId in datasourceNodeRunURL for non-pipeline mode', async () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({
+          nodeId: 'custom-node-id',
+          isInPipeline: false,
+        })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert - ssePost should be called with correct URL
+        await waitFor(() => {
+          expect(mockSsePost).toHaveBeenCalledWith(
+            expect.stringContaining('/rag/pipelines/pipeline-123/workflows/published/datasource/nodes/custom-node-id/run'),
+            expect.any(Object),
+            expect.any(Object),
+          )
+        })
+      })
+
+      it('should use nodeId in datasourceNodeRunURL for pipeline mode', async () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({
+          nodeId: 'custom-node-id',
+          isInPipeline: true,
+        })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert - ssePost should be called with correct URL for draft
+        await waitFor(() => {
+          expect(mockSsePost).toHaveBeenCalledWith(
+            expect.stringContaining('/rag/pipelines/pipeline-123/workflows/draft/datasource/nodes/custom-node-id/run'),
+            expect.any(Object),
+            expect.any(Object),
+          )
+        })
+      })
+    })
+
+    describe('nodeData prop', () => {
+      it('should pass plugin_id and provider_name to useGetDataSourceAuth', () => {
+        // Arrange
+        const nodeData = createMockNodeData({
+          plugin_id: 'my-plugin-id',
+          provider_name: 'my-provider',
+        })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        expect(mockUseGetDataSourceAuth).toHaveBeenCalledWith({
+          pluginId: 'my-plugin-id',
+          provider: 'my-provider',
+        })
+      })
+
+      it('should pass datasource_label to Header as pluginName', () => {
+        // Arrange
+        const nodeData = createMockNodeData({
+          datasource_label: 'Custom Online Drive',
+        })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('header-plugin-name')).toHaveTextContent('Custom Online Drive')
+      })
+    })
+
+    describe('isInPipeline prop', () => {
+      it('should use draft URL when isInPipeline is true', async () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        await waitFor(() => {
+          expect(mockSsePost).toHaveBeenCalledWith(
+            expect.stringContaining('/workflows/draft/'),
+            expect.any(Object),
+            expect.any(Object),
+          )
+        })
+      })
+
+      it('should use published URL when isInPipeline is false', async () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({ isInPipeline: false })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        await waitFor(() => {
+          expect(mockSsePost).toHaveBeenCalledWith(
+            expect.stringContaining('/workflows/published/'),
+            expect.any(Object),
+            expect.any(Object),
+          )
+        })
+      })
+
+      it('should pass isInPipeline to FileList', () => {
+        // Arrange
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('file-list-is-in-pipeline')).toHaveTextContent('true')
+      })
+    })
+
+    describe('supportBatchUpload prop', () => {
+      it('should pass supportBatchUpload true to FileList when supportBatchUpload is true', () => {
+        // Arrange
+        const props = createDefaultProps({ supportBatchUpload: true })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('file-list-support-batch')).toHaveTextContent('true')
+      })
+
+      it('should pass supportBatchUpload false to FileList when supportBatchUpload is false', () => {
+        // Arrange
+        const props = createDefaultProps({ supportBatchUpload: false })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('file-list-support-batch')).toHaveTextContent('false')
+      })
+
+      it.each([
+        [true, 'true'],
+        [false, 'false'],
+        [undefined, 'true'], // Default value
+      ])('should handle supportBatchUpload=%s correctly', (value, expected) => {
+        // Arrange
+        const props = createDefaultProps({ supportBatchUpload: value })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('file-list-support-batch')).toHaveTextContent(expected)
+      })
+    })
+
+    describe('onCredentialChange prop', () => {
+      it('should call onCredentialChange with credential id', () => {
+        // Arrange
+        const mockOnCredentialChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+
+        // Act
+        render(<OnlineDrive {...props} />)
+        fireEvent.click(screen.getByTestId('header-credential-change'))
+
+        // Assert
+        expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+      })
+    })
+  })
+
+  // ==========================================
+  // State Management Tests
+  // ==========================================
+  describe('State Management', () => {
+    it('should fetch files on initial mount when fileList is empty', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.onlineDriveFileList = []
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should not fetch files on initial mount when fileList is not empty', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.onlineDriveFileList = [createMockOnlineDriveFile()]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert - Wait a bit to ensure no call is made
+      await new Promise(resolve => setTimeout(resolve, 100))
+      expect(mockSsePost).not.toHaveBeenCalled()
+    })
+
+    it('should not fetch files when currentCredentialId is empty', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = ''
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert - Wait a bit to ensure no call is made
+      await new Promise(resolve => setTimeout(resolve, 100))
+      expect(mockSsePost).not.toHaveBeenCalled()
+    })
+
+    it('should show loading state during fetch', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockSsePost.mockImplementation(() => {
+        // Never resolves to keep loading state
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(screen.getByTestId('file-list-loading')).toHaveTextContent('true')
+      })
+    })
+
+    it('should update file list on successful fetch', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockFiles = [
+        { id: 'file-1', name: 'file1.txt', type: 'file' as const },
+        { id: 'file-2', name: 'file2.txt', type: 'file' as const },
+      ]
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          data: [{
+            bucket: '',
+            files: mockFiles,
+            is_truncated: false,
+            next_page_parameters: {},
+          }],
+          time_consuming: 1.0,
+        })
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalled()
+      })
+    })
+
+    it('should show error toast on fetch error', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const errorMessage = 'Failed to fetch files'
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          error: errorMessage,
+        })
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockToastNotify).toHaveBeenCalledWith({
+          type: 'error',
+          message: errorMessage,
+        })
+      })
+    })
+  })
+
+  // ==========================================
+  // Memoization Logic and Dependencies Tests
+  // ==========================================
+  describe('Memoization Logic', () => {
+    it('should filter files by keywords', () => {
+      // Arrange
+      mockStoreState.keywords = 'test'
+      mockStoreState.onlineDriveFileList = [
+        createMockOnlineDriveFile({ id: '1', name: 'test-file.txt' }),
+        createMockOnlineDriveFile({ id: '2', name: 'other-file.txt' }),
+        createMockOnlineDriveFile({ id: '3', name: 'another-test.pdf' }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert - filteredOnlineDriveFileList should have 2 items matching 'test'
+      expect(screen.getByTestId('file-list-count')).toHaveTextContent('2')
+    })
+
+    it('should return all files when keywords is empty', () => {
+      // Arrange
+      mockStoreState.keywords = ''
+      mockStoreState.onlineDriveFileList = [
+        createMockOnlineDriveFile({ id: '1', name: 'file1.txt' }),
+        createMockOnlineDriveFile({ id: '2', name: 'file2.txt' }),
+        createMockOnlineDriveFile({ id: '3', name: 'file3.pdf' }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list-count')).toHaveTextContent('3')
+    })
+
+    it('should filter files case-insensitively', () => {
+      // Arrange
+      mockStoreState.keywords = 'TEST'
+      mockStoreState.onlineDriveFileList = [
+        createMockOnlineDriveFile({ id: '1', name: 'test-file.txt' }),
+        createMockOnlineDriveFile({ id: '2', name: 'Test-Document.pdf' }),
+        createMockOnlineDriveFile({ id: '3', name: 'other.txt' }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list-count')).toHaveTextContent('2')
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should have stable handleSetting callback', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<OnlineDrive {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-config-btn'))
+
+      // Assert
+      expect(mockSetShowAccountSettingModal).toHaveBeenCalledWith({
+        payload: ACCOUNT_SETTING_TAB.DATA_SOURCE,
+      })
+    })
+
+    it('should have stable updateKeywords that updates store', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<OnlineDrive {...props} />)
+
+      // Act
+      fireEvent.change(screen.getByTestId('file-list-search-input'), { target: { value: 'new-keyword' } })
+
+      // Assert
+      expect(mockStoreState.setKeywords).toHaveBeenCalledWith('new-keyword')
+    })
+
+    it('should have stable resetKeywords that clears keywords', () => {
+      // Arrange
+      mockStoreState.keywords = 'old-keyword'
+      const props = createDefaultProps()
+      render(<OnlineDrive {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('file-list-reset-keywords'))
+
+      // Assert
+      expect(mockStoreState.setKeywords).toHaveBeenCalledWith('')
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions', () => {
+    describe('File Selection', () => {
+      it('should toggle file selection on file click', () => {
+        // Arrange
+        mockStoreState.selectedFileIds = []
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-select-file'))
+
+        // Assert
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith(['file-1'])
+      })
+
+      it('should deselect file if already selected', () => {
+        // Arrange
+        mockStoreState.selectedFileIds = ['file-1']
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-select-file'))
+
+        // Assert
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith([])
+      })
+
+      it('should not select bucket type items', () => {
+        // Arrange
+        mockStoreState.selectedFileIds = []
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-select-bucket'))
+
+        // Assert
+        expect(mockStoreState.setSelectedFileIds).not.toHaveBeenCalled()
+      })
+
+      it('should limit selection to one file when supportBatchUpload is false', () => {
+        // Arrange
+        mockStoreState.selectedFileIds = ['existing-file']
+        const props = createDefaultProps({ supportBatchUpload: false })
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-select-file'))
+
+        // Assert - Should not add new file because there's already one selected
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith(['existing-file'])
+      })
+
+      it('should allow multiple selections when supportBatchUpload is true', () => {
+        // Arrange
+        mockStoreState.selectedFileIds = ['existing-file']
+        const props = createDefaultProps({ supportBatchUpload: true })
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-select-file'))
+
+        // Assert
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith(['existing-file', 'file-1'])
+      })
+    })
+
+    describe('Folder Navigation', () => {
+      it('should open folder and update breadcrumbs/prefix', () => {
+        // Arrange
+        mockStoreState.breadcrumbs = []
+        mockStoreState.prefix = []
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-open-folder'))
+
+        // Assert
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalledWith([])
+        expect(mockStoreState.setSelectedFileIds).toHaveBeenCalledWith([])
+        expect(mockStoreState.setBreadcrumbs).toHaveBeenCalledWith(['my-folder'])
+        expect(mockStoreState.setPrefix).toHaveBeenCalledWith(['folder-1'])
+      })
+
+      it('should open bucket and set bucket name', () => {
+        // Arrange
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-open-bucket'))
+
+        // Assert
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalledWith([])
+        expect(mockStoreState.setBucket).toHaveBeenCalledWith('my-bucket')
+      })
+
+      it('should not navigate when opening a file', () => {
+        // Arrange
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('file-list-open-file'))
+
+        // Assert - No navigation functions should be called
+        expect(mockStoreState.setBreadcrumbs).not.toHaveBeenCalled()
+        expect(mockStoreState.setPrefix).not.toHaveBeenCalled()
+        expect(mockStoreState.setBucket).not.toHaveBeenCalled()
+      })
+    })
+
+    describe('Credential Change', () => {
+      it('should call onCredentialChange prop', () => {
+        // Arrange
+        const mockOnCredentialChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('header-credential-change'))
+
+        // Assert
+        expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+      })
+    })
+
+    describe('Configuration', () => {
+      it('should open account setting modal on configuration click', () => {
+        // Arrange
+        const props = createDefaultProps()
+        render(<OnlineDrive {...props} />)
+
+        // Act
+        fireEvent.click(screen.getByTestId('header-config-btn'))
+
+        // Assert
+        expect(mockSetShowAccountSettingModal).toHaveBeenCalledWith({
+          payload: ACCOUNT_SETTING_TAB.DATA_SOURCE,
+        })
+      })
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup Tests
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    it('should fetch files when nextPageParameters changes after initial mount', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.onlineDriveFileList = [createMockOnlineDriveFile()]
+      const props = createDefaultProps()
+      const { rerender } = render(<OnlineDrive {...props} />)
+
+      // Act - Simulate nextPageParameters change by re-rendering with updated state
+      mockStoreState.nextPageParameters = { page: 2 }
+      rerender(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should fetch files when prefix changes after initial mount', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.onlineDriveFileList = [createMockOnlineDriveFile()]
+      const props = createDefaultProps()
+      const { rerender } = render(<OnlineDrive {...props} />)
+
+      // Act - Simulate prefix change by re-rendering with updated state
+      mockStoreState.prefix = ['folder1']
+      rerender(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should fetch files when bucket changes after initial mount', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.onlineDriveFileList = [createMockOnlineDriveFile()]
+      const props = createDefaultProps()
+      const { rerender } = render(<OnlineDrive {...props} />)
+
+      // Act - Simulate bucket change by re-rendering with updated state
+      mockStoreState.bucket = 'new-bucket'
+      rerender(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should fetch files when currentCredentialId changes after initial mount', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.onlineDriveFileList = [createMockOnlineDriveFile()]
+      const props = createDefaultProps()
+      const { rerender } = render(<OnlineDrive {...props} />)
+
+      // Act - Simulate credential change by re-rendering with updated state
+      mockStoreState.currentCredentialId = 'cred-2'
+      rerender(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should not fetch files concurrently (debounce)', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      let resolveFirst: () => void
+      const firstPromise = new Promise<void>((resolve) => {
+        resolveFirst = resolve
+      })
+      mockSsePost.mockImplementationOnce((url, options, callbacks) => {
+        firstPromise.then(() => {
+          callbacks.onDataSourceNodeCompleted({
+            data: [{ bucket: '', files: [], is_truncated: false, next_page_parameters: {} }],
+            time_consuming: 1.0,
+          })
+        })
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Try to trigger another fetch while first is loading
+      mockStoreState.prefix = ['folder1']
+
+      // Assert - Only one call should be made initially due to isLoadingRef guard
+      expect(mockSsePost).toHaveBeenCalledTimes(1)
+
+      // Cleanup
+      resolveFirst!()
+    })
+  })
+
+  // ==========================================
+  // API Calls Mocking Tests
+  // ==========================================
+  describe('API Calls', () => {
+    it('should call ssePost with correct parameters', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.prefix = ['folder1']
+      mockStoreState.bucket = 'my-bucket'
+      mockStoreState.nextPageParameters = { cursor: 'abc' }
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.any(String),
+          {
+            body: {
+              inputs: {
+                prefix: 'folder1',
+                bucket: 'my-bucket',
+                next_page_parameters: { cursor: 'abc' },
+                max_keys: 30,
+              },
+              datasource_type: DatasourceType.onlineDrive,
+              credential_id: 'cred-1',
+            },
+          },
+          expect.objectContaining({
+            onDataSourceNodeCompleted: expect.any(Function),
+            onDataSourceNodeError: expect.any(Function),
+          }),
+        )
+      })
+    })
+
+    it('should handle completed response and update store', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.breadcrumbs = ['folder1']
+      mockStoreState.bucket = 'my-bucket'
+      const mockResponseData = [{
+        bucket: 'my-bucket',
+        files: [
+          { id: 'file-1', name: 'file1.txt', size: 1024, type: 'file' as const },
+          { id: 'file-2', name: 'file2.txt', size: 2048, type: 'file' as const },
+        ],
+        is_truncated: true,
+        next_page_parameters: { cursor: 'next-cursor' },
+      }]
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          data: mockResponseData,
+          time_consuming: 1.5,
+        })
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setOnlineDriveFileList).toHaveBeenCalled()
+        expect(mockStoreState.setHasBucket).toHaveBeenCalledWith(true)
+        expect(mockStoreState.isTruncated.current).toBe(true)
+        expect(mockStoreState.currentNextPageParametersRef.current).toEqual({ cursor: 'next-cursor' })
+      })
+    })
+
+    it('should handle error response and show toast', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const errorMessage = 'Access denied'
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          error: errorMessage,
+        })
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockToastNotify).toHaveBeenCalledWith({
+          type: 'error',
+          message: errorMessage,
+        })
+      })
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle empty credentials list', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: [] },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined credentials data', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: undefined,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined pipelineId', async () => {
+      // Arrange
+      mockPipelineId = undefined
+      mockStoreState.currentCredentialId = 'cred-1'
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert - Should still attempt to call ssePost with undefined in URL
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.stringContaining('/rag/pipelines/undefined/'),
+          expect.any(Object),
+          expect.any(Object),
+        )
+      })
+    })
+
+    it('should handle empty file list', () => {
+      // Arrange
+      mockStoreState.onlineDriveFileList = []
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list-count')).toHaveTextContent('0')
+    })
+
+    it('should handle empty breadcrumbs', () => {
+      // Arrange
+      mockStoreState.breadcrumbs = []
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list-breadcrumbs')).toHaveTextContent('')
+    })
+
+    it('should handle empty bucket', () => {
+      // Arrange
+      mockStoreState.bucket = ''
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list-bucket')).toHaveTextContent('')
+    })
+
+    it('should handle special characters in keywords', () => {
+      // Arrange
+      mockStoreState.keywords = 'test.file[1]'
+      mockStoreState.onlineDriveFileList = [
+        createMockOnlineDriveFile({ id: '1', name: 'test.file[1].txt' }),
+        createMockOnlineDriveFile({ id: '2', name: 'other.txt' }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert - Should find file with special characters
+      expect(screen.getByTestId('file-list-count')).toHaveTextContent('1')
+    })
+
+    it('should handle very long file names', () => {
+      // Arrange
+      const longName = `${'a'.repeat(500)}.txt`
+      mockStoreState.onlineDriveFileList = [
+        createMockOnlineDriveFile({ id: '1', name: longName }),
+      ]
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('file-list-count')).toHaveTextContent('1')
+    })
+
+    it('should handle bucket list initiation response', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.bucket = ''
+      mockStoreState.prefix = []
+      const mockBucketResponse = [
+        { bucket: 'bucket-1', files: [], is_truncated: false, next_page_parameters: {} },
+        { bucket: 'bucket-2', files: [], is_truncated: false, next_page_parameters: {} },
+      ]
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          data: mockBucketResponse,
+          time_consuming: 1.0,
+        })
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setHasBucket).toHaveBeenCalledWith(true)
+      })
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations Tests
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      { isInPipeline: true, supportBatchUpload: true },
+      { isInPipeline: true, supportBatchUpload: false },
+      { isInPipeline: false, supportBatchUpload: true },
+      { isInPipeline: false, supportBatchUpload: false },
+    ])('should render correctly with isInPipeline=%s and supportBatchUpload=%s', (propVariation) => {
+      // Arrange
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header')).toBeInTheDocument()
+      expect(screen.getByTestId('file-list')).toBeInTheDocument()
+      expect(screen.getByTestId('file-list-is-in-pipeline')).toHaveTextContent(String(propVariation.isInPipeline))
+      expect(screen.getByTestId('file-list-support-batch')).toHaveTextContent(String(propVariation.supportBatchUpload))
+    })
+
+    it.each([
+      { nodeId: 'node-a', expectedUrlPart: 'nodes/node-a/run' },
+      { nodeId: 'node-b', expectedUrlPart: 'nodes/node-b/run' },
+      { nodeId: '123-456', expectedUrlPart: 'nodes/123-456/run' },
+    ])('should use correct URL for nodeId=%s', async ({ nodeId, expectedUrlPart }) => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const props = createDefaultProps({ nodeId })
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalledWith(
+          expect.stringContaining(expectedUrlPart),
+          expect.any(Object),
+          expect.any(Object),
+        )
+      })
+    })
+
+    it.each([
+      { pluginId: 'plugin-a', providerName: 'provider-a' },
+      { pluginId: 'plugin-b', providerName: 'provider-b' },
+      { pluginId: '', providerName: '' },
+    ])('should call useGetDataSourceAuth with pluginId=%s and providerName=%s', ({ pluginId, providerName }) => {
+      // Arrange
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({
+          plugin_id: pluginId,
+          provider_name: providerName,
+        }),
+      })
+
+      // Act
+      render(<OnlineDrive {...props} />)
+
+      // Assert
+      expect(mockUseGetDataSourceAuth).toHaveBeenCalledWith({
+        pluginId,
+        provider: providerName,
+      })
+    })
+  })
+})
+
+// ==========================================
+// Header Component Tests
+// ==========================================
+describe('Header', () => {
+  const createHeaderProps = (overrides?: Partial<React.ComponentProps<typeof Header>>) => ({
+    onClickConfiguration: jest.fn(),
+    docTitle: 'Documentation',
+    docLink: 'https://docs.example.com/guide',
+    ...overrides,
+  })
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createHeaderProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByText('Documentation')).toBeInTheDocument()
+    })
+
+    it('should render doc link with correct href', () => {
+      // Arrange
+      const props = createHeaderProps({
+        docLink: 'https://custom-docs.com/path',
+        docTitle: 'Custom Docs',
+      })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const link = screen.getByRole('link')
+      expect(link).toHaveAttribute('href', 'https://custom-docs.com/path')
+      expect(link).toHaveAttribute('target', '_blank')
+      expect(link).toHaveAttribute('rel', 'noopener noreferrer')
+    })
+
+    it('should render doc title text', () => {
+      // Arrange
+      const props = createHeaderProps({ docTitle: 'My Documentation Title' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByText('My Documentation Title')).toBeInTheDocument()
+    })
+
+    it('should render configuration button', () => {
+      // Arrange
+      const props = createHeaderProps()
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+  })
+
+  describe('Props', () => {
+    describe('docTitle prop', () => {
+      it.each([
+        'Getting Started',
+        'API Reference',
+        'Installation Guide',
+        '',
+      ])('should render docTitle="%s"', (docTitle) => {
+        // Arrange
+        const props = createHeaderProps({ docTitle })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        if (docTitle)
+          expect(screen.getByText(docTitle)).toBeInTheDocument()
+      })
+    })
+
+    describe('docLink prop', () => {
+      it.each([
+        'https://docs.example.com',
+        'https://docs.example.com/path/to/page',
+        '/relative/path',
+      ])('should set href to "%s"', (docLink) => {
+        // Arrange
+        const props = createHeaderProps({ docLink })
+
+        // Act
+        render(<Header {...props} />)
+
+        // Assert
+        expect(screen.getByRole('link')).toHaveAttribute('href', docLink)
+      })
+    })
+
+    describe('onClickConfiguration prop', () => {
+      it('should call onClickConfiguration when configuration icon is clicked', () => {
+        // Arrange
+        const mockOnClickConfiguration = jest.fn()
+        const props = createHeaderProps({ onClickConfiguration: mockOnClickConfiguration })
+
+        // Act
+        render(<Header {...props} />)
+        const configIcon = screen.getByRole('button').querySelector('svg')
+        fireEvent.click(configIcon!)
+
+        // Assert
+        expect(mockOnClickConfiguration).toHaveBeenCalledTimes(1)
+      })
+
+      it('should not throw when onClickConfiguration is undefined', () => {
+        // Arrange
+        const props = createHeaderProps({ onClickConfiguration: undefined })
+
+        // Act & Assert
+        expect(() => render(<Header {...props} />)).not.toThrow()
+      })
+    })
+  })
+
+  describe('Accessibility', () => {
+    it('should have accessible link with title attribute', () => {
+      // Arrange
+      const props = createHeaderProps({ docTitle: 'Accessible Title' })
+
+      // Act
+      render(<Header {...props} />)
+
+      // Assert
+      const titleSpan = screen.getByTitle('Accessible Title')
+      expect(titleSpan).toBeInTheDocument()
+    })
+  })
+})
+
+// ==========================================
+// Utils Tests
+// ==========================================
+describe('utils', () => {
+  // ==========================================
+  // isFile Tests
+  // ==========================================
+  describe('isFile', () => {
+    it('should return true for file type', () => {
+      // Act & Assert
+      expect(isFile('file')).toBe(true)
+    })
+
+    it('should return false for folder type', () => {
+      // Act & Assert
+      expect(isFile('folder')).toBe(false)
+    })
+
+    it.each([
+      ['file', true],
+      ['folder', false],
+    ] as const)('isFile(%s) should return %s', (type, expected) => {
+      // Act & Assert
+      expect(isFile(type)).toBe(expected)
+    })
+  })
+
+  // ==========================================
+  // isBucketListInitiation Tests
+  // ==========================================
+  describe('isBucketListInitiation', () => {
+    it('should return false when bucket is not empty', () => {
+      // Arrange
+      const data: OnlineDriveData[] = [
+        { bucket: 'my-bucket', files: [], is_truncated: false, next_page_parameters: {} },
+      ]
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, [], 'existing-bucket')).toBe(false)
+    })
+
+    it('should return false when prefix is not empty', () => {
+      // Arrange
+      const data: OnlineDriveData[] = [
+        { bucket: 'my-bucket', files: [], is_truncated: false, next_page_parameters: {} },
+      ]
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, ['folder1'], '')).toBe(false)
+    })
+
+    it('should return false when data items have no bucket', () => {
+      // Arrange
+      const data: OnlineDriveData[] = [
+        { bucket: '', files: [{ id: '1', name: 'file.txt', size: 1024, type: 'file' }], is_truncated: false, next_page_parameters: {} },
+      ]
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, [], '')).toBe(false)
+    })
+
+    it('should return true for multiple buckets with no prefix and bucket', () => {
+      // Arrange
+      const data: OnlineDriveData[] = [
+        { bucket: 'bucket-1', files: [], is_truncated: false, next_page_parameters: {} },
+        { bucket: 'bucket-2', files: [], is_truncated: false, next_page_parameters: {} },
+      ]
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, [], '')).toBe(true)
+    })
+
+    it('should return true for single bucket with no files, no prefix, and no bucket', () => {
+      // Arrange
+      const data: OnlineDriveData[] = [
+        { bucket: 'my-bucket', files: [], is_truncated: false, next_page_parameters: {} },
+      ]
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, [], '')).toBe(true)
+    })
+
+    it('should return false for single bucket with files', () => {
+      // Arrange
+      const data: OnlineDriveData[] = [
+        { bucket: 'my-bucket', files: [{ id: '1', name: 'file.txt', size: 1024, type: 'file' }], is_truncated: false, next_page_parameters: {} },
+      ]
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, [], '')).toBe(false)
+    })
+
+    it('should return false for empty data array', () => {
+      // Arrange
+      const data: OnlineDriveData[] = []
+
+      // Act & Assert
+      expect(isBucketListInitiation(data, [], '')).toBe(false)
+    })
+  })
+
+  // ==========================================
+  // convertOnlineDriveData Tests
+  // ==========================================
+  describe('convertOnlineDriveData', () => {
+    describe('Empty data handling', () => {
+      it('should return empty result for empty data array', () => {
+        // Arrange
+        const data: OnlineDriveData[] = []
+
+        // Act
+        const result = convertOnlineDriveData(data, [], '')
+
+        // Assert
+        expect(result).toEqual({
+          fileList: [],
+          isTruncated: false,
+          nextPageParameters: {},
+          hasBucket: false,
+        })
+      })
+    })
+
+    describe('Bucket list initiation', () => {
+      it('should convert multiple buckets to bucket file list', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          { bucket: 'bucket-1', files: [], is_truncated: false, next_page_parameters: {} },
+          { bucket: 'bucket-2', files: [], is_truncated: false, next_page_parameters: {} },
+          { bucket: 'bucket-3', files: [], is_truncated: false, next_page_parameters: {} },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], '')
+
+        // Assert
+        expect(result.fileList).toHaveLength(3)
+        expect(result.fileList[0]).toEqual({
+          id: 'bucket-1',
+          name: 'bucket-1',
+          type: OnlineDriveFileType.bucket,
+        })
+        expect(result.fileList[1]).toEqual({
+          id: 'bucket-2',
+          name: 'bucket-2',
+          type: OnlineDriveFileType.bucket,
+        })
+        expect(result.fileList[2]).toEqual({
+          id: 'bucket-3',
+          name: 'bucket-3',
+          type: OnlineDriveFileType.bucket,
+        })
+        expect(result.hasBucket).toBe(true)
+        expect(result.isTruncated).toBe(false)
+        expect(result.nextPageParameters).toEqual({})
+      })
+
+      it('should convert single bucket with no files to bucket list', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          { bucket: 'my-bucket', files: [], is_truncated: false, next_page_parameters: {} },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], '')
+
+        // Assert
+        expect(result.fileList).toHaveLength(1)
+        expect(result.fileList[0]).toEqual({
+          id: 'my-bucket',
+          name: 'my-bucket',
+          type: OnlineDriveFileType.bucket,
+        })
+        expect(result.hasBucket).toBe(true)
+      })
+    })
+
+    describe('File list conversion', () => {
+      it('should convert files correctly', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [
+              { id: 'file-1', name: 'document.pdf', size: 1024, type: 'file' },
+              { id: 'file-2', name: 'image.png', size: 2048, type: 'file' },
+            ],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, ['folder1'], 'my-bucket')
+
+        // Assert
+        expect(result.fileList).toHaveLength(2)
+        expect(result.fileList[0]).toEqual({
+          id: 'file-1',
+          name: 'document.pdf',
+          size: 1024,
+          type: OnlineDriveFileType.file,
+        })
+        expect(result.fileList[1]).toEqual({
+          id: 'file-2',
+          name: 'image.png',
+          size: 2048,
+          type: OnlineDriveFileType.file,
+        })
+        expect(result.hasBucket).toBe(true)
+      })
+
+      it('should convert folders correctly without size', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [
+              { id: 'folder-1', name: 'Documents', size: 0, type: 'folder' },
+              { id: 'folder-2', name: 'Images', size: 0, type: 'folder' },
+            ],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.fileList).toHaveLength(2)
+        expect(result.fileList[0]).toEqual({
+          id: 'folder-1',
+          name: 'Documents',
+          size: undefined,
+          type: OnlineDriveFileType.folder,
+        })
+        expect(result.fileList[1]).toEqual({
+          id: 'folder-2',
+          name: 'Images',
+          size: undefined,
+          type: OnlineDriveFileType.folder,
+        })
+      })
+
+      it('should handle mixed files and folders', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [
+              { id: 'folder-1', name: 'Documents', size: 0, type: 'folder' },
+              { id: 'file-1', name: 'readme.txt', size: 256, type: 'file' },
+              { id: 'folder-2', name: 'Images', size: 0, type: 'folder' },
+              { id: 'file-2', name: 'data.json', size: 512, type: 'file' },
+            ],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.fileList).toHaveLength(4)
+        expect(result.fileList[0].type).toBe(OnlineDriveFileType.folder)
+        expect(result.fileList[1].type).toBe(OnlineDriveFileType.file)
+        expect(result.fileList[2].type).toBe(OnlineDriveFileType.folder)
+        expect(result.fileList[3].type).toBe(OnlineDriveFileType.file)
+      })
+    })
+
+    describe('Truncation and pagination', () => {
+      it('should return isTruncated true when data is truncated', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'file.txt', size: 1024, type: 'file' }],
+            is_truncated: true,
+            next_page_parameters: { cursor: 'next-cursor' },
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.isTruncated).toBe(true)
+        expect(result.nextPageParameters).toEqual({ cursor: 'next-cursor' })
+      })
+
+      it('should return isTruncated false when not truncated', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'file.txt', size: 1024, type: 'file' }],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.isTruncated).toBe(false)
+        expect(result.nextPageParameters).toEqual({})
+      })
+
+      it('should handle undefined is_truncated', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'file.txt', size: 1024, type: 'file' }],
+            is_truncated: undefined as any,
+            next_page_parameters: undefined as any,
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.isTruncated).toBe(false)
+        expect(result.nextPageParameters).toEqual({})
+      })
+    })
+
+    describe('hasBucket flag', () => {
+      it('should return hasBucket true when bucket exists in data', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'file.txt', size: 1024, type: 'file' }],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.hasBucket).toBe(true)
+      })
+
+      it('should return hasBucket false when bucket is empty in data', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: '',
+            files: [{ id: 'file-1', name: 'file.txt', size: 1024, type: 'file' }],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], '')
+
+        // Assert
+        expect(result.hasBucket).toBe(false)
+      })
+    })
+
+    describe('Edge cases', () => {
+      it('should handle files with zero size', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'empty.txt', size: 0, type: 'file' }],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.fileList[0].size).toBe(0)
+      })
+
+      it('should handle files with very large size', () => {
+        // Arrange
+        const largeSize = Number.MAX_SAFE_INTEGER
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'large.bin', size: largeSize, type: 'file' }],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.fileList[0].size).toBe(largeSize)
+      })
+
+      it('should handle files with special characters in name', () => {
+        // Arrange
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [
+              { id: 'file-1', name: 'file[1] (copy).txt', size: 1024, type: 'file' },
+              { id: 'file-2', name: 'doc-with-dash_and_underscore.pdf', size: 2048, type: 'file' },
+              { id: 'file-3', name: 'file with spaces.txt', size: 512, type: 'file' },
+            ],
+            is_truncated: false,
+            next_page_parameters: {},
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.fileList[0].name).toBe('file[1] (copy).txt')
+        expect(result.fileList[1].name).toBe('doc-with-dash_and_underscore.pdf')
+        expect(result.fileList[2].name).toBe('file with spaces.txt')
+      })
+
+      it('should handle complex next_page_parameters', () => {
+        // Arrange
+        const complexParams = {
+          cursor: 'abc123',
+          page: 2,
+          limit: 50,
+          nested: { key: 'value' },
+        }
+        const data: OnlineDriveData[] = [
+          {
+            bucket: 'my-bucket',
+            files: [{ id: 'file-1', name: 'file.txt', size: 1024, type: 'file' }],
+            is_truncated: true,
+            next_page_parameters: complexParams,
+          },
+        ]
+
+        // Act
+        const result = convertOnlineDriveData(data, [], 'my-bucket')
+
+        // Assert
+        expect(result.nextPageParameters).toEqual(complexParams)
+      })
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/base/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/base/index.spec.tsx
new file mode 100644
index 0000000000..f96127f361
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/base/index.spec.tsx
@@ -0,0 +1,947 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import React from 'react'
+import CheckboxWithLabel from './checkbox-with-label'
+import CrawledResultItem from './crawled-result-item'
+import CrawledResult from './crawled-result'
+import Crawling from './crawling'
+import ErrorMessage from './error-message'
+import type { CrawlResultItem as CrawlResultItemType } from '@/models/datasets'
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+
+const createMockCrawlResultItem = (overrides?: Partial<CrawlResultItemType>): CrawlResultItemType => ({
+  source_url: 'https://example.com/page1',
+  title: 'Test Page Title',
+  markdown: '# Test content',
+  description: 'Test description',
+  ...overrides,
+})
+
+const createMockCrawlResultItems = (count = 3): CrawlResultItemType[] => {
+  return Array.from({ length: count }, (_, i) =>
+    createMockCrawlResultItem({
+      source_url: `https://example.com/page${i + 1}`,
+      title: `Page ${i + 1}`,
+    }),
+  )
+}
+
+// ==========================================
+// CheckboxWithLabel Tests
+// ==========================================
+describe('CheckboxWithLabel', () => {
+  const defaultProps = {
+    isChecked: false,
+    onChange: jest.fn(),
+    label: 'Test Label',
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      render(<CheckboxWithLabel {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Test Label')).toBeInTheDocument()
+    })
+
+    it('should render checkbox in unchecked state', () => {
+      // Arrange & Act
+      const { container } = render(<CheckboxWithLabel {...defaultProps} isChecked={false} />)
+
+      // Assert - Custom checkbox component uses div with data-testid
+      const checkbox = container.querySelector('[data-testid^="checkbox"]')
+      expect(checkbox).toBeInTheDocument()
+      expect(checkbox).not.toHaveClass('bg-components-checkbox-bg')
+    })
+
+    it('should render checkbox in checked state', () => {
+      // Arrange & Act
+      const { container } = render(<CheckboxWithLabel {...defaultProps} isChecked={true} />)
+
+      // Assert - Checked state has check icon
+      const checkIcon = container.querySelector('[data-testid^="check-icon"]')
+      expect(checkIcon).toBeInTheDocument()
+    })
+
+    it('should render tooltip when provided', () => {
+      // Arrange & Act
+      render(<CheckboxWithLabel {...defaultProps} tooltip="Helpful tooltip text" />)
+
+      // Assert - Tooltip trigger should be present
+      const tooltipTrigger = document.querySelector('[class*="ml-0.5"]')
+      expect(tooltipTrigger).toBeInTheDocument()
+    })
+
+    it('should not render tooltip when not provided', () => {
+      // Arrange & Act
+      render(<CheckboxWithLabel {...defaultProps} />)
+
+      // Assert
+      const tooltipTrigger = document.querySelector('[class*="ml-0.5"]')
+      expect(tooltipTrigger).not.toBeInTheDocument()
+    })
+  })
+
+  describe('Props', () => {
+    it('should apply custom className', () => {
+      // Arrange & Act
+      const { container } = render(
+        <CheckboxWithLabel {...defaultProps} className="custom-class" />,
+      )
+
+      // Assert
+      const label = container.querySelector('label')
+      expect(label).toHaveClass('custom-class')
+    })
+
+    it('should apply custom labelClassName', () => {
+      // Arrange & Act
+      render(<CheckboxWithLabel {...defaultProps} labelClassName="custom-label-class" />)
+
+      // Assert
+      const labelText = screen.getByText('Test Label')
+      expect(labelText).toHaveClass('custom-label-class')
+    })
+  })
+
+  describe('User Interactions', () => {
+    it('should call onChange with true when clicking unchecked checkbox', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const { container } = render(<CheckboxWithLabel {...defaultProps} isChecked={false} onChange={mockOnChange} />)
+
+      // Act
+      const checkbox = container.querySelector('[data-testid^="checkbox"]')!
+      fireEvent.click(checkbox)
+
+      // Assert
+      expect(mockOnChange).toHaveBeenCalledWith(true)
+    })
+
+    it('should call onChange with false when clicking checked checkbox', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      const { container } = render(<CheckboxWithLabel {...defaultProps} isChecked={true} onChange={mockOnChange} />)
+
+      // Act
+      const checkbox = container.querySelector('[data-testid^="checkbox"]')!
+      fireEvent.click(checkbox)
+
+      // Assert
+      expect(mockOnChange).toHaveBeenCalledWith(false)
+    })
+
+    it('should not trigger onChange when clicking label text due to custom checkbox', () => {
+      // Arrange
+      const mockOnChange = jest.fn()
+      render(<CheckboxWithLabel {...defaultProps} onChange={mockOnChange} />)
+
+      // Act - Click on the label text element
+      const labelText = screen.getByText('Test Label')
+      fireEvent.click(labelText)
+
+      // Assert - Custom checkbox does not support native label-input click forwarding
+      expect(mockOnChange).not.toHaveBeenCalled()
+    })
+  })
+})
+
+// ==========================================
+// CrawledResultItem Tests
+// ==========================================
+describe('CrawledResultItem', () => {
+  const defaultProps = {
+    payload: createMockCrawlResultItem(),
+    isChecked: false,
+    onCheckChange: jest.fn(),
+    isPreview: false,
+    showPreview: true,
+    onPreview: jest.fn(),
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      render(<CrawledResultItem {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Test Page Title')).toBeInTheDocument()
+      expect(screen.getByText('https://example.com/page1')).toBeInTheDocument()
+    })
+
+    it('should render checkbox when isMultipleChoice is true', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResultItem {...defaultProps} isMultipleChoice={true} />)
+
+      // Assert - Custom checkbox uses data-testid
+      const checkbox = container.querySelector('[data-testid^="checkbox"]')
+      expect(checkbox).toBeInTheDocument()
+    })
+
+    it('should render radio when isMultipleChoice is false', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResultItem {...defaultProps} isMultipleChoice={false} />)
+
+      // Assert - Radio component has size-4 rounded-full classes
+      const radio = container.querySelector('.size-4.rounded-full')
+      expect(radio).toBeInTheDocument()
+    })
+
+    it('should render checkbox as checked when isChecked is true', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResultItem {...defaultProps} isChecked={true} />)
+
+      // Assert - Checked state shows check icon
+      const checkIcon = container.querySelector('[data-testid^="check-icon"]')
+      expect(checkIcon).toBeInTheDocument()
+    })
+
+    it('should render preview button when showPreview is true', () => {
+      // Arrange & Act
+      render(<CrawledResultItem {...defaultProps} showPreview={true} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should not render preview button when showPreview is false', () => {
+      // Arrange & Act
+      render(<CrawledResultItem {...defaultProps} showPreview={false} />)
+
+      // Assert
+      expect(screen.queryByRole('button')).not.toBeInTheDocument()
+    })
+
+    it('should apply active background when isPreview is true', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResultItem {...defaultProps} isPreview={true} />)
+
+      // Assert
+      const item = container.firstChild
+      expect(item).toHaveClass('bg-state-base-active')
+    })
+
+    it('should apply hover styles when isPreview is false', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResultItem {...defaultProps} isPreview={false} />)
+
+      // Assert
+      const item = container.firstChild
+      expect(item).toHaveClass('group')
+      expect(item).toHaveClass('hover:bg-state-base-hover')
+    })
+  })
+
+  describe('Props', () => {
+    it('should display payload title', () => {
+      // Arrange
+      const payload = createMockCrawlResultItem({ title: 'Custom Title' })
+
+      // Act
+      render(<CrawledResultItem {...defaultProps} payload={payload} />)
+
+      // Assert
+      expect(screen.getByText('Custom Title')).toBeInTheDocument()
+    })
+
+    it('should display payload source_url', () => {
+      // Arrange
+      const payload = createMockCrawlResultItem({ source_url: 'https://custom.url/path' })
+
+      // Act
+      render(<CrawledResultItem {...defaultProps} payload={payload} />)
+
+      // Assert
+      expect(screen.getByText('https://custom.url/path')).toBeInTheDocument()
+    })
+
+    it('should set title attribute for truncation tooltip', () => {
+      // Arrange
+      const payload = createMockCrawlResultItem({ title: 'Very Long Title' })
+
+      // Act
+      render(<CrawledResultItem {...defaultProps} payload={payload} />)
+
+      // Assert
+      const titleElement = screen.getByText('Very Long Title')
+      expect(titleElement).toHaveAttribute('title', 'Very Long Title')
+    })
+  })
+
+  describe('User Interactions', () => {
+    it('should call onCheckChange with true when clicking unchecked checkbox', () => {
+      // Arrange
+      const mockOnCheckChange = jest.fn()
+      const { container } = render(
+        <CrawledResultItem
+          {...defaultProps}
+          isChecked={false}
+          onCheckChange={mockOnCheckChange}
+        />,
+      )
+
+      // Act
+      const checkbox = container.querySelector('[data-testid^="checkbox"]')!
+      fireEvent.click(checkbox)
+
+      // Assert
+      expect(mockOnCheckChange).toHaveBeenCalledWith(true)
+    })
+
+    it('should call onCheckChange with false when clicking checked checkbox', () => {
+      // Arrange
+      const mockOnCheckChange = jest.fn()
+      const { container } = render(
+        <CrawledResultItem
+          {...defaultProps}
+          isChecked={true}
+          onCheckChange={mockOnCheckChange}
+        />,
+      )
+
+      // Act
+      const checkbox = container.querySelector('[data-testid^="checkbox"]')!
+      fireEvent.click(checkbox)
+
+      // Assert
+      expect(mockOnCheckChange).toHaveBeenCalledWith(false)
+    })
+
+    it('should call onPreview when clicking preview button', () => {
+      // Arrange
+      const mockOnPreview = jest.fn()
+      render(<CrawledResultItem {...defaultProps} onPreview={mockOnPreview} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      expect(mockOnPreview).toHaveBeenCalled()
+    })
+
+    it('should toggle radio state when isMultipleChoice is false', () => {
+      // Arrange
+      const mockOnCheckChange = jest.fn()
+      const { container } = render(
+        <CrawledResultItem
+          {...defaultProps}
+          isMultipleChoice={false}
+          isChecked={false}
+          onCheckChange={mockOnCheckChange}
+        />,
+      )
+
+      // Act - Radio uses size-4 rounded-full classes
+      const radio = container.querySelector('.size-4.rounded-full')!
+      fireEvent.click(radio)
+
+      // Assert
+      expect(mockOnCheckChange).toHaveBeenCalledWith(true)
+    })
+  })
+})
+
+// ==========================================
+// CrawledResult Tests
+// ==========================================
+describe('CrawledResult', () => {
+  const defaultProps = {
+    list: createMockCrawlResultItems(3),
+    checkedList: [] as CrawlResultItemType[],
+    onSelectedChange: jest.fn(),
+    usedTime: 1.5,
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} />)
+
+      // Assert - Check for time info which contains total count
+      expect(screen.getByText(/1.5/)).toBeInTheDocument()
+    })
+
+    it('should render all list items', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+      expect(screen.getByText('Page 2')).toBeInTheDocument()
+      expect(screen.getByText('Page 3')).toBeInTheDocument()
+    })
+
+    it('should display scrape time info', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} usedTime={2.5} />)
+
+      // Assert - Check for the time display
+      expect(screen.getByText(/2.5/)).toBeInTheDocument()
+    })
+
+    it('should render select all checkbox when isMultipleChoice is true', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResult {...defaultProps} isMultipleChoice={true} />)
+
+      // Assert - Multiple custom checkboxes (select all + items)
+      const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+      expect(checkboxes.length).toBe(4) // 1 select all + 3 items
+    })
+
+    it('should not render select all checkbox when isMultipleChoice is false', () => {
+      // Arrange & Act
+      const { container } = render(<CrawledResult {...defaultProps} isMultipleChoice={false} />)
+
+      // Assert - No select all checkbox, only radio buttons for items
+      const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+      expect(checkboxes.length).toBe(0)
+      // Radio buttons have size-4 and rounded-full classes
+      const radios = container.querySelectorAll('.size-4.rounded-full')
+      expect(radios.length).toBe(3)
+    })
+
+    it('should show "Select All" when not all items are checked', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} checkedList={[]} />)
+
+      // Assert
+      expect(screen.getByText(/selectAll|Select All/i)).toBeInTheDocument()
+    })
+
+    it('should show "Reset All" when all items are checked', () => {
+      // Arrange
+      const allChecked = createMockCrawlResultItems(3)
+
+      // Act
+      render(<CrawledResult {...defaultProps} checkedList={allChecked} />)
+
+      // Assert
+      expect(screen.getByText(/resetAll|Reset All/i)).toBeInTheDocument()
+    })
+  })
+
+  describe('Props', () => {
+    it('should apply custom className', () => {
+      // Arrange & Act
+      const { container } = render(
+        <CrawledResult {...defaultProps} className="custom-class" />,
+      )
+
+      // Assert
+      expect(container.firstChild).toHaveClass('custom-class')
+    })
+
+    it('should highlight item at previewIndex', () => {
+      // Arrange & Act
+      const { container } = render(
+        <CrawledResult {...defaultProps} previewIndex={1} />,
+      )
+
+      // Assert - Second item should have active state
+      const items = container.querySelectorAll('[class*="rounded-lg"][class*="cursor-pointer"]')
+      expect(items[1]).toHaveClass('bg-state-base-active')
+    })
+
+    it('should pass showPreview to items', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} showPreview={true} />)
+
+      // Assert - Preview buttons should be visible
+      const buttons = screen.getAllByRole('button')
+      expect(buttons.length).toBe(3)
+    })
+
+    it('should not show preview buttons when showPreview is false', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} showPreview={false} />)
+
+      // Assert
+      expect(screen.queryByRole('button')).not.toBeInTheDocument()
+    })
+  })
+
+  describe('User Interactions', () => {
+    it('should call onSelectedChange with all items when clicking select all', () => {
+      // Arrange
+      const mockOnSelectedChange = jest.fn()
+      const list = createMockCrawlResultItems(3)
+      const { container } = render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          checkedList={[]}
+          onSelectedChange={mockOnSelectedChange}
+        />,
+      )
+
+      // Act - Click select all checkbox (first checkbox)
+      const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+      fireEvent.click(checkboxes[0])
+
+      // Assert
+      expect(mockOnSelectedChange).toHaveBeenCalledWith(list)
+    })
+
+    it('should call onSelectedChange with empty array when clicking reset all', () => {
+      // Arrange
+      const mockOnSelectedChange = jest.fn()
+      const list = createMockCrawlResultItems(3)
+      const { container } = render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          checkedList={list}
+          onSelectedChange={mockOnSelectedChange}
+        />,
+      )
+
+      // Act
+      const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+      fireEvent.click(checkboxes[0])
+
+      // Assert
+      expect(mockOnSelectedChange).toHaveBeenCalledWith([])
+    })
+
+    it('should add item to checkedList when checking unchecked item', () => {
+      // Arrange
+      const mockOnSelectedChange = jest.fn()
+      const list = createMockCrawlResultItems(3)
+      const { container } = render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          checkedList={[list[0]]}
+          onSelectedChange={mockOnSelectedChange}
+        />,
+      )
+
+      // Act - Click second item checkbox (index 2, accounting for select all)
+      const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+      fireEvent.click(checkboxes[2])
+
+      // Assert
+      expect(mockOnSelectedChange).toHaveBeenCalledWith([list[0], list[1]])
+    })
+
+    it('should remove item from checkedList when unchecking checked item', () => {
+      // Arrange
+      const mockOnSelectedChange = jest.fn()
+      const list = createMockCrawlResultItems(3)
+      const { container } = render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          checkedList={[list[0], list[1]]}
+          onSelectedChange={mockOnSelectedChange}
+        />,
+      )
+
+      // Act - Uncheck first item (index 1, after select all)
+      const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+      fireEvent.click(checkboxes[1])
+
+      // Assert
+      expect(mockOnSelectedChange).toHaveBeenCalledWith([list[1]])
+    })
+
+    it('should replace selection when checking in single choice mode', () => {
+      // Arrange
+      const mockOnSelectedChange = jest.fn()
+      const list = createMockCrawlResultItems(3)
+      const { container } = render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          checkedList={[list[0]]}
+          onSelectedChange={mockOnSelectedChange}
+          isMultipleChoice={false}
+        />,
+      )
+
+      // Act - Click second item radio (Radio uses size-4 rounded-full classes)
+      const radios = container.querySelectorAll('.size-4.rounded-full')
+      fireEvent.click(radios[1])
+
+      // Assert - Should only select the clicked item
+      expect(mockOnSelectedChange).toHaveBeenCalledWith([list[1]])
+    })
+
+    it('should call onPreview with item and index when clicking preview', () => {
+      // Arrange
+      const mockOnPreview = jest.fn()
+      const list = createMockCrawlResultItems(3)
+      render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          onPreview={mockOnPreview}
+          showPreview={true}
+        />,
+      )
+
+      // Act
+      const buttons = screen.getAllByRole('button')
+      fireEvent.click(buttons[1]) // Second item's preview button
+
+      // Assert
+      expect(mockOnPreview).toHaveBeenCalledWith(list[1], 1)
+    })
+
+    it('should not crash when clicking preview without onPreview callback', () => {
+      // Arrange - showPreview is true but onPreview is undefined
+      const list = createMockCrawlResultItems(3)
+      render(
+        <CrawledResult
+          {...defaultProps}
+          list={list}
+          onPreview={undefined}
+          showPreview={true}
+        />,
+      )
+
+      // Act - Click preview button should trigger early return in handlePreview
+      const buttons = screen.getAllByRole('button')
+      fireEvent.click(buttons[0])
+
+      // Assert - Should not throw error, component still renders
+      expect(screen.getByText('Page 1')).toBeInTheDocument()
+    })
+  })
+
+  describe('Edge Cases', () => {
+    it('should handle empty list', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} list={[]} usedTime={0.5} />)
+
+      // Assert - Should show time info with 0 count
+      expect(screen.getByText(/0.5/)).toBeInTheDocument()
+    })
+
+    it('should handle single item list', () => {
+      // Arrange
+      const singleItem = [createMockCrawlResultItem()]
+
+      // Act
+      render(<CrawledResult {...defaultProps} list={singleItem} />)
+
+      // Assert
+      expect(screen.getByText('Test Page Title')).toBeInTheDocument()
+    })
+
+    it('should format usedTime to one decimal place', () => {
+      // Arrange & Act
+      render(<CrawledResult {...defaultProps} usedTime={1.567} />)
+
+      // Assert
+      expect(screen.getByText(/1.6/)).toBeInTheDocument()
+    })
+  })
+})
+
+// ==========================================
+// Crawling Tests
+// ==========================================
+describe('Crawling', () => {
+  const defaultProps = {
+    crawledNum: 5,
+    totalNum: 10,
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      render(<Crawling {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText(/5\/10/)).toBeInTheDocument()
+    })
+
+    it('should display crawled count and total', () => {
+      // Arrange & Act
+      render(<Crawling crawledNum={3} totalNum={15} />)
+
+      // Assert
+      expect(screen.getByText(/3\/15/)).toBeInTheDocument()
+    })
+
+    it('should render skeleton items', () => {
+      // Arrange & Act
+      const { container } = render(<Crawling {...defaultProps} />)
+
+      // Assert - Should have 3 skeleton items
+      const skeletonItems = container.querySelectorAll('.px-2.py-\\[5px\\]')
+      expect(skeletonItems.length).toBe(3)
+    })
+
+    it('should render header skeleton block', () => {
+      // Arrange & Act
+      const { container } = render(<Crawling {...defaultProps} />)
+
+      // Assert
+      const headerBlocks = container.querySelectorAll('.px-4.py-2 .bg-text-quaternary')
+      expect(headerBlocks.length).toBeGreaterThan(0)
+    })
+  })
+
+  describe('Props', () => {
+    it('should apply custom className', () => {
+      // Arrange & Act
+      const { container } = render(
+        <Crawling {...defaultProps} className="custom-crawling-class" />,
+      )
+
+      // Assert
+      expect(container.firstChild).toHaveClass('custom-crawling-class')
+    })
+
+    it('should handle zero values', () => {
+      // Arrange & Act
+      render(<Crawling crawledNum={0} totalNum={0} />)
+
+      // Assert
+      expect(screen.getByText(/0\/0/)).toBeInTheDocument()
+    })
+
+    it('should handle large numbers', () => {
+      // Arrange & Act
+      render(<Crawling crawledNum={999} totalNum={1000} />)
+
+      // Assert
+      expect(screen.getByText(/999\/1000/)).toBeInTheDocument()
+    })
+  })
+
+  describe('Skeleton Structure', () => {
+    it('should render blocks with correct width classes', () => {
+      // Arrange & Act
+      const { container } = render(<Crawling {...defaultProps} />)
+
+      // Assert - Check for various width classes
+      expect(container.querySelector('.w-\\[35\\%\\]')).toBeInTheDocument()
+      expect(container.querySelector('.w-\\[50\\%\\]')).toBeInTheDocument()
+      expect(container.querySelector('.w-\\[40\\%\\]')).toBeInTheDocument()
+    })
+  })
+})
+
+// ==========================================
+// ErrorMessage Tests
+// ==========================================
+describe('ErrorMessage', () => {
+  const defaultProps = {
+    title: 'Error Title',
+  }
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange & Act
+      render(<ErrorMessage {...defaultProps} />)
+
+      // Assert
+      expect(screen.getByText('Error Title')).toBeInTheDocument()
+    })
+
+    it('should render error icon', () => {
+      // Arrange & Act
+      const { container } = render(<ErrorMessage {...defaultProps} />)
+
+      // Assert
+      const icon = container.querySelector('svg')
+      expect(icon).toBeInTheDocument()
+      expect(icon).toHaveClass('text-text-destructive')
+    })
+
+    it('should render title', () => {
+      // Arrange & Act
+      render(<ErrorMessage title="Custom Error Title" />)
+
+      // Assert
+      expect(screen.getByText('Custom Error Title')).toBeInTheDocument()
+    })
+
+    it('should render error message when provided', () => {
+      // Arrange & Act
+      render(<ErrorMessage {...defaultProps} errorMsg="Detailed error description" />)
+
+      // Assert
+      expect(screen.getByText('Detailed error description')).toBeInTheDocument()
+    })
+
+    it('should not render error message when not provided', () => {
+      // Arrange & Act
+      render(<ErrorMessage {...defaultProps} />)
+
+      // Assert - Should only have title, not error message container
+      const textElements = screen.getAllByText(/Error Title/)
+      expect(textElements.length).toBe(1)
+    })
+  })
+
+  describe('Props', () => {
+    it('should apply custom className', () => {
+      // Arrange & Act
+      const { container } = render(
+        <ErrorMessage {...defaultProps} className="custom-error-class" />,
+      )
+
+      // Assert
+      expect(container.firstChild).toHaveClass('custom-error-class')
+    })
+
+    it('should render with empty errorMsg', () => {
+      // Arrange & Act
+      render(<ErrorMessage {...defaultProps} errorMsg="" />)
+
+      // Assert - Empty string should not render message div
+      expect(screen.getByText('Error Title')).toBeInTheDocument()
+    })
+
+    it('should handle long title text', () => {
+      // Arrange
+      const longTitle = 'This is a very long error title that might wrap to multiple lines'
+
+      // Act
+      render(<ErrorMessage title={longTitle} />)
+
+      // Assert
+      expect(screen.getByText(longTitle)).toBeInTheDocument()
+    })
+
+    it('should handle long error message', () => {
+      // Arrange
+      const longErrorMsg = 'This is a very detailed error message explaining what went wrong and how to fix it. It contains multiple sentences.'
+
+      // Act
+      render(<ErrorMessage {...defaultProps} errorMsg={longErrorMsg} />)
+
+      // Assert
+      expect(screen.getByText(longErrorMsg)).toBeInTheDocument()
+    })
+  })
+
+  describe('Styling', () => {
+    it('should have error background styling', () => {
+      // Arrange & Act
+      const { container } = render(<ErrorMessage {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('bg-toast-error-bg')
+    })
+
+    it('should have border styling', () => {
+      // Arrange & Act
+      const { container } = render(<ErrorMessage {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('border-components-panel-border')
+    })
+
+    it('should have rounded corners', () => {
+      // Arrange & Act
+      const { container } = render(<ErrorMessage {...defaultProps} />)
+
+      // Assert
+      expect(container.firstChild).toHaveClass('rounded-xl')
+    })
+  })
+})
+
+// ==========================================
+// Integration Tests
+// ==========================================
+describe('Base Components Integration', () => {
+  it('should render CrawledResult with CrawledResultItem children', () => {
+    // Arrange
+    const list = createMockCrawlResultItems(2)
+
+    // Act
+    render(
+      <CrawledResult
+        list={list}
+        checkedList={[]}
+        onSelectedChange={jest.fn()}
+        usedTime={1.0}
+      />,
+    )
+
+    // Assert - Both items should render
+    expect(screen.getByText('Page 1')).toBeInTheDocument()
+    expect(screen.getByText('Page 2')).toBeInTheDocument()
+  })
+
+  it('should render CrawledResult with CheckboxWithLabel for select all', () => {
+    // Arrange
+    const list = createMockCrawlResultItems(2)
+
+    // Act
+    const { container } = render(
+      <CrawledResult
+        list={list}
+        checkedList={[]}
+        onSelectedChange={jest.fn()}
+        usedTime={1.0}
+        isMultipleChoice={true}
+      />,
+    )
+
+    // Assert - Should have select all checkbox + item checkboxes
+    const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+    expect(checkboxes.length).toBe(3) // select all + 2 items
+  })
+
+  it('should allow selecting and previewing items', () => {
+    // Arrange
+    const list = createMockCrawlResultItems(3)
+    const mockOnSelectedChange = jest.fn()
+    const mockOnPreview = jest.fn()
+
+    const { container } = render(
+      <CrawledResult
+        list={list}
+        checkedList={[]}
+        onSelectedChange={mockOnSelectedChange}
+        onPreview={mockOnPreview}
+        showPreview={true}
+        usedTime={1.0}
+      />,
+    )
+
+    // Act - Select first item (index 1, after select all)
+    const checkboxes = container.querySelectorAll('[data-testid^="checkbox"]')
+    fireEvent.click(checkboxes[1])
+
+    // Assert
+    expect(mockOnSelectedChange).toHaveBeenCalledWith([list[0]])
+
+    // Act - Preview second item
+    const previewButtons = screen.getAllByRole('button')
+    fireEvent.click(previewButtons[1])
+
+    // Assert
+    expect(mockOnPreview).toHaveBeenCalledWith(list[1], 1)
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/base/options/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/base/options/index.spec.tsx
new file mode 100644
index 0000000000..01c487c694
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/base/options/index.spec.tsx
@@ -0,0 +1,1128 @@
+import { fireEvent, render, screen } from '@testing-library/react'
+import React from 'react'
+import Options from './index'
+import { CrawlStep } from '@/models/datasets'
+import type { RAGPipelineVariables } from '@/models/pipeline'
+import { PipelineInputVarType } from '@/models/pipeline'
+import Toast from '@/app/components/base/toast'
+import { BaseFieldType } from '@/app/components/base/form/form-scenarios/base/types'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock useInitialData and useConfigurations hooks
+const mockUseInitialData = jest.fn()
+const mockUseConfigurations = jest.fn()
+jest.mock('@/app/components/rag-pipeline/hooks/use-input-fields', () => ({
+  useInitialData: (...args: any[]) => mockUseInitialData(...args),
+  useConfigurations: (...args: any[]) => mockUseConfigurations(...args),
+}))
+
+// Mock BaseField
+const mockBaseField = jest.fn()
+jest.mock('@/app/components/base/form/form-scenarios/base/field', () => {
+  const MockBaseFieldFactory = (props: any) => {
+    mockBaseField(props)
+    const MockField = ({ form }: { form: any }) => (
+      <div data-testid={`field-${props.config?.variable || 'unknown'}`}>
+        <span data-testid={`field-label-${props.config?.variable}`}>{props.config?.label}</span>
+        <input
+          data-testid={`field-input-${props.config?.variable}`}
+          value={form.getFieldValue?.(props.config?.variable) || ''}
+          onChange={e => form.setFieldValue?.(props.config?.variable, e.target.value)}
+        />
+      </div>
+    )
+    return MockField
+  }
+  return MockBaseFieldFactory
+})
+
+// Mock useAppForm
+const mockHandleSubmit = jest.fn()
+const mockFormValues: Record<string, any> = {}
+jest.mock('@/app/components/base/form', () => ({
+  useAppForm: (options: any) => {
+    const formOptions = options
+    return {
+      handleSubmit: () => {
+        const validationResult = formOptions.validators?.onSubmit?.({ value: mockFormValues })
+        if (!validationResult) {
+          mockHandleSubmit()
+          formOptions.onSubmit?.({ value: mockFormValues })
+        }
+      },
+      getFieldValue: (field: string) => mockFormValues[field],
+      setFieldValue: (field: string, value: any) => {
+        mockFormValues[field] = value
+      },
+    }
+  },
+}))
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+
+const createMockVariable = (overrides?: Partial<RAGPipelineVariables[0]>): RAGPipelineVariables[0] => ({
+  belong_to_node_id: 'node-1',
+  type: PipelineInputVarType.textInput,
+  label: 'Test Label',
+  variable: 'test_variable',
+  max_length: 100,
+  default_value: '',
+  placeholder: 'Enter value',
+  required: true,
+  ...overrides,
+})
+
+const createMockVariables = (count = 1): RAGPipelineVariables => {
+  return Array.from({ length: count }, (_, i) =>
+    createMockVariable({
+      variable: `variable_${i}`,
+      label: `Label ${i}`,
+    }),
+  )
+}
+
+const createMockConfiguration = (overrides?: Partial<any>): any => ({
+  type: BaseFieldType.textInput,
+  variable: 'test_variable',
+  label: 'Test Label',
+  required: true,
+  maxLength: 100,
+  options: [],
+  showConditions: [],
+  placeholder: 'Enter value',
+  ...overrides,
+})
+
+type OptionsProps = React.ComponentProps<typeof Options>
+
+const createDefaultProps = (overrides?: Partial<OptionsProps>): OptionsProps => ({
+  variables: createMockVariables(),
+  step: CrawlStep.init,
+  runDisabled: false,
+  onSubmit: jest.fn(),
+  ...overrides,
+})
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('Options', () => {
+  let toastNotifySpy: jest.SpyInstance
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+
+    // Spy on Toast.notify instead of mocking the entire module
+    toastNotifySpy = jest.spyOn(Toast, 'notify').mockImplementation(() => ({ clear: jest.fn() }))
+
+    // Reset mock form values
+    Object.keys(mockFormValues).forEach(key => delete mockFormValues[key])
+
+    // Default mock return values - using real generateZodSchema
+    mockUseInitialData.mockReturnValue({})
+    mockUseConfigurations.mockReturnValue([createMockConfiguration()])
+  })
+
+  afterEach(() => {
+    toastNotifySpy.mockRestore()
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert
+      expect(container.querySelector('form')).toBeInTheDocument()
+    })
+
+    it('should render options header with toggle text', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      expect(screen.getByText(/options/i)).toBeInTheDocument()
+    })
+
+    it('should render Run button', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      expect(screen.getByRole('button')).toBeInTheDocument()
+      expect(screen.getByText(/run/i)).toBeInTheDocument()
+    })
+
+    it('should render form fields when not folded', () => {
+      // Arrange
+      const configurations = [
+        createMockConfiguration({ variable: 'url', label: 'URL' }),
+        createMockConfiguration({ variable: 'depth', label: 'Depth' }),
+      ]
+      mockUseConfigurations.mockReturnValue(configurations)
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('field-url')).toBeInTheDocument()
+      expect(screen.getByTestId('field-depth')).toBeInTheDocument()
+    })
+
+    it('should render arrow icon in correct orientation when expanded', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert - Arrow should not have -rotate-90 class when expanded
+      const arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).toBeInTheDocument()
+      expect(arrowIcon).not.toHaveClass('-rotate-90')
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('variables prop', () => {
+      it('should pass variables to useInitialData hook', () => {
+        // Arrange
+        const variables = createMockVariables(3)
+        const props = createDefaultProps({ variables })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(mockUseInitialData).toHaveBeenCalledWith(variables)
+      })
+
+      it('should pass variables to useConfigurations hook', () => {
+        // Arrange
+        const variables = createMockVariables(2)
+        const props = createDefaultProps({ variables })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(mockUseConfigurations).toHaveBeenCalledWith(variables)
+      })
+
+      it('should render correct number of fields based on configurations', () => {
+        // Arrange
+        const configurations = [
+          createMockConfiguration({ variable: 'field_1', label: 'Field 1' }),
+          createMockConfiguration({ variable: 'field_2', label: 'Field 2' }),
+          createMockConfiguration({ variable: 'field_3', label: 'Field 3' }),
+        ]
+        mockUseConfigurations.mockReturnValue(configurations)
+        const props = createDefaultProps()
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('field-field_1')).toBeInTheDocument()
+        expect(screen.getByTestId('field-field_2')).toBeInTheDocument()
+        expect(screen.getByTestId('field-field_3')).toBeInTheDocument()
+      })
+
+      it('should handle empty variables array', () => {
+        // Arrange
+        mockUseConfigurations.mockReturnValue([])
+        const props = createDefaultProps({ variables: [] })
+
+        // Act
+        const { container } = render(<Options {...props} />)
+
+        // Assert
+        expect(container.querySelector('form')).toBeInTheDocument()
+        expect(screen.queryByTestId(/field-/)).not.toBeInTheDocument()
+      })
+    })
+
+    describe('step prop', () => {
+      it('should show "Run" text when step is init', () => {
+        // Arrange
+        const props = createDefaultProps({ step: CrawlStep.init })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByText(/run/i)).toBeInTheDocument()
+      })
+
+      it('should show "Running" text when step is running', () => {
+        // Arrange
+        const props = createDefaultProps({ step: CrawlStep.running })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByText(/running/i)).toBeInTheDocument()
+      })
+
+      it('should disable button when step is running', () => {
+        // Arrange
+        const props = createDefaultProps({ step: CrawlStep.running })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeDisabled()
+      })
+
+      it('should enable button when step is finished', () => {
+        // Arrange
+        const props = createDefaultProps({ step: CrawlStep.finished, runDisabled: false })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).not.toBeDisabled()
+      })
+
+      it('should show loading state on button when step is running', () => {
+        // Arrange
+        const props = createDefaultProps({ step: CrawlStep.running })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert - Button should have loading prop which disables it
+        const button = screen.getByRole('button')
+        expect(button).toBeDisabled()
+      })
+    })
+
+    describe('runDisabled prop', () => {
+      it('should disable button when runDisabled is true', () => {
+        // Arrange
+        const props = createDefaultProps({ runDisabled: true })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeDisabled()
+      })
+
+      it('should enable button when runDisabled is false and step is not running', () => {
+        // Arrange
+        const props = createDefaultProps({ runDisabled: false, step: CrawlStep.init })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).not.toBeDisabled()
+      })
+
+      it('should disable button when both runDisabled is true and step is running', () => {
+        // Arrange
+        const props = createDefaultProps({ runDisabled: true, step: CrawlStep.running })
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).toBeDisabled()
+      })
+
+      it('should default runDisabled to undefined (falsy)', () => {
+        // Arrange
+        const props = createDefaultProps()
+        delete (props as any).runDisabled
+
+        // Act
+        render(<Options {...props} />)
+
+        // Assert
+        expect(screen.getByRole('button')).not.toBeDisabled()
+      })
+    })
+
+    describe('onSubmit prop', () => {
+      it('should call onSubmit when form is submitted successfully', () => {
+        // Arrange - Use non-required field so validation passes
+        const config = createMockConfiguration({
+          variable: 'optional_field',
+          required: false,
+          type: BaseFieldType.textInput,
+        })
+        mockUseConfigurations.mockReturnValue([config])
+        const mockOnSubmit = jest.fn()
+        const props = createDefaultProps({ onSubmit: mockOnSubmit })
+
+        // Act
+        render(<Options {...props} />)
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        expect(mockOnSubmit).toHaveBeenCalled()
+      })
+
+      it('should not call onSubmit when validation fails', () => {
+        // Arrange
+        const mockOnSubmit = jest.fn()
+        // Create a required field configuration
+        const requiredConfig = createMockConfiguration({
+          variable: 'url',
+          label: 'URL',
+          required: true,
+          type: BaseFieldType.textInput,
+        })
+        mockUseConfigurations.mockReturnValue([requiredConfig])
+        // mockFormValues is empty, so required field validation will fail
+        const props = createDefaultProps({ onSubmit: mockOnSubmit })
+
+        // Act
+        render(<Options {...props} />)
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        expect(mockOnSubmit).not.toHaveBeenCalled()
+      })
+
+      it('should pass form values to onSubmit', () => {
+        // Arrange - Use non-required fields so validation passes
+        const configs = [
+          createMockConfiguration({ variable: 'url', required: false, type: BaseFieldType.textInput }),
+          createMockConfiguration({ variable: 'depth', required: false, type: BaseFieldType.numberInput }),
+        ]
+        mockUseConfigurations.mockReturnValue(configs)
+        mockFormValues.url = 'https://example.com'
+        mockFormValues.depth = 2
+        const mockOnSubmit = jest.fn()
+        const props = createDefaultProps({ onSubmit: mockOnSubmit })
+
+        // Act
+        render(<Options {...props} />)
+        fireEvent.click(screen.getByRole('button'))
+
+        // Assert
+        expect(mockOnSubmit).toHaveBeenCalledWith({ url: 'https://example.com', depth: 2 })
+      })
+    })
+  })
+
+  // ==========================================
+  // Side Effects and Cleanup (useEffect)
+  // ==========================================
+  describe('Side Effects and Cleanup', () => {
+    it('should expand options when step changes to init', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.finished })
+      const { rerender, container } = render(<Options {...props} />)
+
+      // Act - Change step to init
+      rerender(<Options {...props} step={CrawlStep.init} />)
+
+      // Assert - Fields should be visible (expanded)
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+      const arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).not.toHaveClass('-rotate-90')
+    })
+
+    it('should collapse options when step changes to running', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.init })
+      const { rerender, container } = render(<Options {...props} />)
+
+      // Assert - Initially expanded
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+
+      // Act - Change step to running
+      rerender(<Options {...props} step={CrawlStep.running} />)
+
+      // Assert - Should collapse (fields hidden, arrow rotated)
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+      const arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).toHaveClass('-rotate-90')
+    })
+
+    it('should collapse options when step changes to finished', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.init })
+      const { rerender, container } = render(<Options {...props} />)
+
+      // Act - Change step to finished
+      rerender(<Options {...props} step={CrawlStep.finished} />)
+
+      // Assert - Should collapse
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+      const arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).toHaveClass('-rotate-90')
+    })
+
+    it('should respond to step transitions from init -> running -> finished', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.init })
+      const { rerender, container } = render(<Options {...props} />)
+
+      // Assert - Initially expanded
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+
+      // Act - Transition to running
+      rerender(<Options {...props} step={CrawlStep.running} />)
+
+      // Assert - Collapsed
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+      let arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).toHaveClass('-rotate-90')
+
+      // Act - Transition to finished
+      rerender(<Options {...props} step={CrawlStep.finished} />)
+
+      // Assert - Still collapsed
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+      arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).toHaveClass('-rotate-90')
+    })
+
+    it('should expand when step transitions from finished to init', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.finished })
+      const { rerender } = render(<Options {...props} />)
+
+      // Assert - Initially collapsed when finished
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+
+      // Act - Transition back to init
+      rerender(<Options {...props} step={CrawlStep.init} />)
+
+      // Assert - Should expand
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Memoization Logic and Dependencies
+  // ==========================================
+  describe('Memoization Logic and Dependencies', () => {
+    it('should regenerate schema when configurations change', () => {
+      // Arrange
+      const config1 = [createMockConfiguration({ variable: 'url' })]
+      const config2 = [createMockConfiguration({ variable: 'depth' })]
+      mockUseConfigurations.mockReturnValue(config1)
+      const props = createDefaultProps()
+      const { rerender } = render(<Options {...props} />)
+
+      // Assert - First render creates schema
+      expect(screen.getByTestId('field-url')).toBeInTheDocument()
+
+      // Act - Change configurations
+      mockUseConfigurations.mockReturnValue(config2)
+      rerender(<Options {...props} variables={createMockVariables(2)} />)
+
+      // Assert - New field is rendered with new schema
+      expect(screen.getByTestId('field-depth')).toBeInTheDocument()
+    })
+
+    it('should compute isRunning correctly for init step', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.init })
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert - Button should not be in loading state
+      const button = screen.getByRole('button')
+      expect(button).not.toBeDisabled()
+      expect(screen.getByText(/run/i)).toBeInTheDocument()
+    })
+
+    it('should compute isRunning correctly for running step', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.running })
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert - Button should be in loading state
+      const button = screen.getByRole('button')
+      expect(button).toBeDisabled()
+      expect(screen.getByText(/running/i)).toBeInTheDocument()
+    })
+
+    it('should compute isRunning correctly for finished step', () => {
+      // Arrange
+      const props = createDefaultProps({ step: CrawlStep.finished })
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert - Button should not be in loading state
+      expect(screen.getByText(/run/i)).toBeInTheDocument()
+    })
+
+    it('should use memoized schema for validation', () => {
+      // Arrange - Use real generateZodSchema with valid configuration
+      const config = createMockConfiguration({
+        variable: 'test_field',
+        required: false, // Not required so validation passes with empty value
+      })
+      mockUseConfigurations.mockReturnValue([config])
+      const mockOnSubmit = jest.fn()
+      const props = createDefaultProps({ onSubmit: mockOnSubmit })
+      render(<Options {...props} />)
+
+      // Act - Trigger validation via submit
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - onSubmit should be called if validation passes
+      expect(mockOnSubmit).toHaveBeenCalled()
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions and Event Handlers', () => {
+    it('should toggle fold state when header is clicked', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Assert - Initially expanded
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+
+      // Act - Click to fold
+      fireEvent.click(screen.getByText(/options/i))
+
+      // Assert - Should be folded
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+
+      // Act - Click to unfold
+      fireEvent.click(screen.getByText(/options/i))
+
+      // Assert - Should be expanded again
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+    })
+
+    it('should prevent default and stop propagation on form submit', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const { container } = render(<Options {...props} />)
+
+      // Act
+      const form = container.querySelector('form')!
+      const mockPreventDefault = jest.fn()
+      const mockStopPropagation = jest.fn()
+
+      fireEvent.submit(form, {
+        preventDefault: mockPreventDefault,
+        stopPropagation: mockStopPropagation,
+      })
+
+      // Assert - The form element handles submit event
+      expect(form).toBeInTheDocument()
+    })
+
+    it('should trigger form submit when button is clicked', () => {
+      // Arrange - Use non-required field so validation passes
+      const config = createMockConfiguration({
+        variable: 'optional_field',
+        required: false,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([config])
+      const mockOnSubmit = jest.fn()
+      const props = createDefaultProps({ onSubmit: mockOnSubmit })
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      expect(mockOnSubmit).toHaveBeenCalled()
+    })
+
+    it('should not trigger submit when button is disabled', () => {
+      // Arrange
+      const mockOnSubmit = jest.fn()
+      const props = createDefaultProps({ onSubmit: mockOnSubmit, runDisabled: true })
+      render(<Options {...props} />)
+
+      // Act - Try to click disabled button
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      expect(mockOnSubmit).not.toHaveBeenCalled()
+    })
+
+    it('should maintain fold state after form submission', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Assert - Initially expanded
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+
+      // Act - Submit form
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - Should still be expanded (unless step changes)
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+    })
+
+    it('should allow clicking on arrow icon container to toggle', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const { container } = render(<Options {...props} />)
+
+      // Assert - Initially expanded
+      expect(screen.getByTestId('field-test_variable')).toBeInTheDocument()
+
+      // Act - Click on the toggle container (parent of the options text and arrow)
+      const toggleContainer = container.querySelector('.cursor-pointer')
+      fireEvent.click(toggleContainer!)
+
+      // Assert - Should be folded
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle validation error and show toast', () => {
+      // Arrange - Create required field that will fail validation when empty
+      const requiredConfig = createMockConfiguration({
+        variable: 'url',
+        label: 'URL',
+        required: true,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([requiredConfig])
+      // mockFormValues.url is undefined, so validation will fail
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - Toast should be called with error message
+      expect(toastNotifySpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          type: 'error',
+        }),
+      )
+    })
+
+    it('should handle validation error and display field name in message', () => {
+      // Arrange - Create required field that will fail validation
+      const requiredConfig = createMockConfiguration({
+        variable: 'email_address',
+        label: 'Email Address',
+        required: true,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([requiredConfig])
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - Toast message should contain field path
+      expect(toastNotifySpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          type: 'error',
+          message: expect.stringContaining('email_address'),
+        }),
+      )
+    })
+
+    it('should handle empty variables gracefully', () => {
+      // Arrange
+      mockUseConfigurations.mockReturnValue([])
+      const props = createDefaultProps({ variables: [] })
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert - Should render without errors
+      expect(container.querySelector('form')).toBeInTheDocument()
+      expect(screen.getByRole('button')).toBeInTheDocument()
+    })
+
+    it('should handle single variable configuration', () => {
+      // Arrange
+      const singleConfig = [createMockConfiguration({ variable: 'only_field' })]
+      mockUseConfigurations.mockReturnValue(singleConfig)
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('field-only_field')).toBeInTheDocument()
+    })
+
+    it('should handle many configurations', () => {
+      // Arrange
+      const manyConfigs = Array.from({ length: 10 }, (_, i) =>
+        createMockConfiguration({ variable: `field_${i}`, label: `Field ${i}` }),
+      )
+      mockUseConfigurations.mockReturnValue(manyConfigs)
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      for (let i = 0; i < 10; i++)
+        expect(screen.getByTestId(`field-field_${i}`)).toBeInTheDocument()
+    })
+
+    it('should handle validation with multiple required fields (shows first error)', () => {
+      // Arrange - Multiple required fields
+      const configs = [
+        createMockConfiguration({ variable: 'url', label: 'URL', required: true, type: BaseFieldType.textInput }),
+        createMockConfiguration({ variable: 'depth', label: 'Depth', required: true, type: BaseFieldType.textInput }),
+      ]
+      mockUseConfigurations.mockReturnValue(configs)
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - Toast should be called once (only first error)
+      expect(toastNotifySpy).toHaveBeenCalledTimes(1)
+      expect(toastNotifySpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          type: 'error',
+        }),
+      )
+    })
+
+    it('should handle validation pass when all required fields have values', () => {
+      // Arrange
+      const requiredConfig = createMockConfiguration({
+        variable: 'url',
+        label: 'URL',
+        required: true,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([requiredConfig])
+      mockFormValues.url = 'https://example.com' // Provide valid value
+      const mockOnSubmit = jest.fn()
+      const props = createDefaultProps({ onSubmit: mockOnSubmit })
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert - No toast error, onSubmit called
+      expect(toastNotifySpy).not.toHaveBeenCalled()
+      expect(mockOnSubmit).toHaveBeenCalled()
+    })
+
+    it('should handle undefined variables gracefully', () => {
+      // Arrange
+      mockUseInitialData.mockReturnValue({})
+      mockUseConfigurations.mockReturnValue([])
+      const props = createDefaultProps({ variables: undefined as any })
+
+      // Act & Assert - Should not throw
+      expect(() => render(<Options {...props} />)).not.toThrow()
+    })
+
+    it('should handle rapid fold/unfold toggling', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Act - Toggle rapidly multiple times
+      const toggleText = screen.getByText(/options/i)
+      for (let i = 0; i < 5; i++)
+        fireEvent.click(toggleText)
+
+      // Assert - Final state should be folded (odd number of clicks)
+      expect(screen.queryByTestId('field-test_variable')).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      [{ step: CrawlStep.init, runDisabled: false }, false, 'run'],
+      [{ step: CrawlStep.init, runDisabled: true }, true, 'run'],
+      [{ step: CrawlStep.running, runDisabled: false }, true, 'running'],
+      [{ step: CrawlStep.running, runDisabled: true }, true, 'running'],
+      [{ step: CrawlStep.finished, runDisabled: false }, false, 'run'],
+      [{ step: CrawlStep.finished, runDisabled: true }, true, 'run'],
+    ] as const)('should render correctly with step=%s, runDisabled=%s', (propVariation, expectedDisabled, expectedText) => {
+      // Arrange
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      const button = screen.getByRole('button')
+      if (expectedDisabled)
+        expect(button).toBeDisabled()
+      else
+        expect(button).not.toBeDisabled()
+
+      expect(screen.getByText(new RegExp(expectedText, 'i'))).toBeInTheDocument()
+    })
+
+    it('should handle all CrawlStep values', () => {
+      // Arrange & Act & Assert
+      Object.values(CrawlStep).forEach((step) => {
+        const props = createDefaultProps({ step })
+        const { unmount, container } = render(<Options {...props} />)
+        expect(container.querySelector('form')).toBeInTheDocument()
+        unmount()
+      })
+    })
+
+    it('should handle variables with different types', () => {
+      // Arrange
+      const variables: RAGPipelineVariables = [
+        createMockVariable({ type: PipelineInputVarType.textInput, variable: 'text_field' }),
+        createMockVariable({ type: PipelineInputVarType.paragraph, variable: 'paragraph_field' }),
+        createMockVariable({ type: PipelineInputVarType.number, variable: 'number_field' }),
+        createMockVariable({ type: PipelineInputVarType.checkbox, variable: 'checkbox_field' }),
+        createMockVariable({ type: PipelineInputVarType.select, variable: 'select_field' }),
+      ]
+      const configurations = variables.map(v => createMockConfiguration({ variable: v.variable }))
+      mockUseConfigurations.mockReturnValue(configurations)
+      const props = createDefaultProps({ variables })
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      variables.forEach((v) => {
+        expect(screen.getByTestId(`field-${v.variable}`)).toBeInTheDocument()
+      })
+    })
+  })
+
+  // ==========================================
+  // Form Validation
+  // ==========================================
+  describe('Form Validation', () => {
+    it('should pass validation with valid data', () => {
+      // Arrange - Use non-required field so empty value passes
+      const config = createMockConfiguration({
+        variable: 'optional_field',
+        required: false,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([config])
+      const mockOnSubmit = jest.fn()
+      const props = createDefaultProps({ onSubmit: mockOnSubmit })
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      expect(mockOnSubmit).toHaveBeenCalled()
+      expect(toastNotifySpy).not.toHaveBeenCalled()
+    })
+
+    it('should fail validation with invalid data', () => {
+      // Arrange - Required field with empty value
+      const config = createMockConfiguration({
+        variable: 'url',
+        label: 'URL',
+        required: true,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([config])
+      const mockOnSubmit = jest.fn()
+      const props = createDefaultProps({ onSubmit: mockOnSubmit })
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      expect(mockOnSubmit).not.toHaveBeenCalled()
+      expect(toastNotifySpy).toHaveBeenCalled()
+    })
+
+    it('should show error toast message when validation fails', () => {
+      // Arrange - Required field with empty value
+      const config = createMockConfiguration({
+        variable: 'my_field',
+        label: 'My Field',
+        required: true,
+        type: BaseFieldType.textInput,
+      })
+      mockUseConfigurations.mockReturnValue([config])
+      const props = createDefaultProps()
+      render(<Options {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByRole('button'))
+
+      // Assert
+      expect(toastNotifySpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          type: 'error',
+          message: expect.any(String),
+        }),
+      )
+    })
+  })
+
+  // ==========================================
+  // Styling Tests
+  // ==========================================
+  describe('Styling', () => {
+    it('should apply correct container classes to form', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert
+      const form = container.querySelector('form')
+      expect(form).toHaveClass('w-full')
+    })
+
+    it('should apply cursor-pointer class to toggle container', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert
+      const toggleContainer = container.querySelector('.cursor-pointer')
+      expect(toggleContainer).toBeInTheDocument()
+    })
+
+    it('should apply select-none class to prevent text selection on toggle', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert
+      const toggleContainer = container.querySelector('.select-none')
+      expect(toggleContainer).toBeInTheDocument()
+    })
+
+    it('should apply rotate class to arrow icon when folded', () => {
+      // Arrange
+      const props = createDefaultProps()
+      const { container } = render(<Options {...props} />)
+
+      // Act - Fold the options
+      fireEvent.click(screen.getByText(/options/i))
+
+      // Assert
+      const arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).toHaveClass('-rotate-90')
+    })
+
+    it('should not apply rotate class to arrow icon when expanded', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert
+      const arrowIcon = container.querySelector('svg')
+      expect(arrowIcon).not.toHaveClass('-rotate-90')
+    })
+
+    it('should apply border class to fields container when expanded', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<Options {...props} />)
+
+      // Assert
+      const fieldsContainer = container.querySelector('.border-t')
+      expect(fieldsContainer).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // BaseField Integration
+  // ==========================================
+  describe('BaseField Integration', () => {
+    it('should pass correct props to BaseField factory', () => {
+      // Arrange
+      const config = createMockConfiguration({ variable: 'test_var', label: 'Test Label' })
+      mockUseConfigurations.mockReturnValue([config])
+      mockUseInitialData.mockReturnValue({ test_var: 'default_value' })
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert
+      expect(mockBaseField).toHaveBeenCalledWith(
+        expect.objectContaining({
+          initialData: { test_var: 'default_value' },
+          config,
+        }),
+      )
+    })
+
+    it('should render unique key for each field', () => {
+      // Arrange
+      const configurations = [
+        createMockConfiguration({ variable: 'field_a' }),
+        createMockConfiguration({ variable: 'field_b' }),
+        createMockConfiguration({ variable: 'field_c' }),
+      ]
+      mockUseConfigurations.mockReturnValue(configurations)
+      const props = createDefaultProps()
+
+      // Act
+      render(<Options {...props} />)
+
+      // Assert - All fields should be rendered (React would warn if keys aren't unique)
+      expect(screen.getByTestId('field-field_a')).toBeInTheDocument()
+      expect(screen.getByTestId('field-field_b')).toBeInTheDocument()
+      expect(screen.getByTestId('field-field_c')).toBeInTheDocument()
+    })
+  })
+})
diff --git a/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/index.spec.tsx b/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/index.spec.tsx
new file mode 100644
index 0000000000..8e28a43b2e
--- /dev/null
+++ b/web/app/components/datasets/documents/create-from-pipeline/data-source/website-crawl/index.spec.tsx
@@ -0,0 +1,1497 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import React from 'react'
+import WebsiteCrawl from './index'
+import type { CrawlResultItem } from '@/models/datasets'
+import { CrawlStep } from '@/models/datasets'
+import type { DataSourceNodeType } from '@/app/components/workflow/nodes/data-source/types'
+import { ACCOUNT_SETTING_TAB } from '@/app/components/header/account-setting/constants'
+
+// ==========================================
+// Mock Modules
+// ==========================================
+
+// Note: react-i18next uses global mock from web/__mocks__/react-i18next.ts
+
+// Mock useDocLink - context hook requires mocking
+const mockDocLink = jest.fn((path?: string) => `https://docs.example.com${path || ''}`)
+jest.mock('@/context/i18n', () => ({
+  useDocLink: () => mockDocLink,
+}))
+
+// Mock dataset-detail context - context provider requires mocking
+let mockPipelineId: string | undefined = 'pipeline-123'
+jest.mock('@/context/dataset-detail', () => ({
+  useDatasetDetailContextWithSelector: (selector: (s: any) => any) => selector({ dataset: { pipeline_id: mockPipelineId } }),
+}))
+
+// Mock modal context - context provider requires mocking
+const mockSetShowAccountSettingModal = jest.fn()
+jest.mock('@/context/modal-context', () => ({
+  useModalContextSelector: (selector: (s: any) => any) => selector({ setShowAccountSettingModal: mockSetShowAccountSettingModal }),
+}))
+
+// Mock ssePost - API service requires mocking
+const mockSsePost = jest.fn()
+jest.mock('@/service/base', () => ({
+  ssePost: (...args: any[]) => mockSsePost(...args),
+}))
+
+// Mock useGetDataSourceAuth - API service hook requires mocking
+const mockUseGetDataSourceAuth = jest.fn()
+jest.mock('@/service/use-datasource', () => ({
+  useGetDataSourceAuth: (params: any) => mockUseGetDataSourceAuth(params),
+}))
+
+// Mock usePipeline hooks - API service hooks require mocking
+const mockUseDraftPipelinePreProcessingParams = jest.fn()
+const mockUsePublishedPipelinePreProcessingParams = jest.fn()
+jest.mock('@/service/use-pipeline', () => ({
+  useDraftPipelinePreProcessingParams: (...args: any[]) => mockUseDraftPipelinePreProcessingParams(...args),
+  usePublishedPipelinePreProcessingParams: (...args: any[]) => mockUsePublishedPipelinePreProcessingParams(...args),
+}))
+
+// Note: zustand/react/shallow useShallow is imported directly (simple utility function)
+
+// Mock store
+const mockStoreState = {
+  crawlResult: undefined as { data: CrawlResultItem[]; time_consuming: number | string } | undefined,
+  step: CrawlStep.init,
+  websitePages: [] as CrawlResultItem[],
+  previewIndex: -1,
+  currentCredentialId: '',
+  setWebsitePages: jest.fn(),
+  setCurrentWebsite: jest.fn(),
+  setPreviewIndex: jest.fn(),
+  setStep: jest.fn(),
+  setCrawlResult: jest.fn(),
+}
+
+const mockGetState = jest.fn(() => mockStoreState)
+const mockDataSourceStore = { getState: mockGetState }
+
+jest.mock('../store', () => ({
+  useDataSourceStoreWithSelector: (selector: (s: any) => any) => selector(mockStoreState),
+  useDataSourceStore: () => mockDataSourceStore,
+}))
+
+// Mock Header component
+jest.mock('../base/header', () => {
+  const MockHeader = (props: any) => (
+    <div data-testid="header">
+      <span data-testid="header-doc-title">{props.docTitle}</span>
+      <span data-testid="header-doc-link">{props.docLink}</span>
+      <span data-testid="header-plugin-name">{props.pluginName}</span>
+      <span data-testid="header-credential-id">{props.currentCredentialId}</span>
+      <button data-testid="header-config-btn" onClick={props.onClickConfiguration}>Configure</button>
+      <button data-testid="header-credential-change" onClick={() => props.onCredentialChange('new-cred-id')}>Change Credential</button>
+      <span data-testid="header-credentials-count">{props.credentials?.length || 0}</span>
+    </div>
+  )
+  return MockHeader
+})
+
+// Mock Options component
+const mockOptionsSubmit = jest.fn()
+jest.mock('./base/options', () => {
+  const MockOptions = (props: any) => (
+    <div data-testid="options">
+      <span data-testid="options-step">{props.step}</span>
+      <span data-testid="options-run-disabled">{String(props.runDisabled)}</span>
+      <span data-testid="options-variables-count">{props.variables?.length || 0}</span>
+      <button
+        data-testid="options-submit-btn"
+        onClick={() => {
+          mockOptionsSubmit()
+          props.onSubmit({ url: 'https://example.com', depth: 2 })
+        }}
+      >
+        Submit
+      </button>
+    </div>
+  )
+  return MockOptions
+})
+
+// Mock Crawling component
+jest.mock('./base/crawling', () => {
+  const MockCrawling = (props: any) => (
+    <div data-testid="crawling">
+      <span data-testid="crawling-crawled-num">{props.crawledNum}</span>
+      <span data-testid="crawling-total-num">{props.totalNum}</span>
+    </div>
+  )
+  return MockCrawling
+})
+
+// Mock ErrorMessage component
+jest.mock('./base/error-message', () => {
+  const MockErrorMessage = (props: any) => (
+    <div data-testid="error-message" className={props.className}>
+      <span data-testid="error-title">{props.title}</span>
+      <span data-testid="error-msg">{props.errorMsg}</span>
+    </div>
+  )
+  return MockErrorMessage
+})
+
+// Mock CrawledResult component
+jest.mock('./base/crawled-result', () => {
+  const MockCrawledResult = (props: any) => (
+    <div data-testid="crawled-result" className={props.className}>
+      <span data-testid="crawled-result-count">{props.list?.length || 0}</span>
+      <span data-testid="crawled-result-checked-count">{props.checkedList?.length || 0}</span>
+      <span data-testid="crawled-result-used-time">{props.usedTime}</span>
+      <span data-testid="crawled-result-preview-index">{props.previewIndex}</span>
+      <span data-testid="crawled-result-show-preview">{String(props.showPreview)}</span>
+      <span data-testid="crawled-result-multiple-choice">{String(props.isMultipleChoice)}</span>
+      <button
+        data-testid="crawled-result-select-change"
+        onClick={() => props.onSelectedChange([{ source_url: 'https://example.com', title: 'Test' }])}
+      >
+        Change Selection
+      </button>
+      <button
+        data-testid="crawled-result-preview"
+        onClick={() => props.onPreview?.({ source_url: 'https://example.com', title: 'Test' }, 0)}
+      >
+        Preview
+      </button>
+    </div>
+  )
+  return MockCrawledResult
+})
+
+// ==========================================
+// Test Data Builders
+// ==========================================
+const createMockNodeData = (overrides?: Partial<DataSourceNodeType>): DataSourceNodeType => ({
+  title: 'Test Node',
+  plugin_id: 'plugin-123',
+  provider_type: 'website',
+  provider_name: 'website-provider',
+  datasource_name: 'website-ds',
+  datasource_label: 'Website Crawler',
+  datasource_parameters: {},
+  datasource_configurations: {},
+  ...overrides,
+} as DataSourceNodeType)
+
+const createMockCrawlResultItem = (overrides?: Partial<CrawlResultItem>): CrawlResultItem => ({
+  source_url: 'https://example.com/page1',
+  title: 'Test Page 1',
+  markdown: '# Test content',
+  description: 'Test description',
+  ...overrides,
+})
+
+const createMockCredential = (overrides?: Partial<{ id: string; name: string }>) => ({
+  id: 'cred-1',
+  name: 'Test Credential',
+  avatar_url: 'https://example.com/avatar.png',
+  credential: {},
+  is_default: false,
+  type: 'oauth2',
+  ...overrides,
+})
+
+type WebsiteCrawlProps = React.ComponentProps<typeof WebsiteCrawl>
+
+const createDefaultProps = (overrides?: Partial<WebsiteCrawlProps>): WebsiteCrawlProps => ({
+  nodeId: 'node-1',
+  nodeData: createMockNodeData(),
+  onCredentialChange: jest.fn(),
+  isInPipeline: false,
+  supportBatchUpload: true,
+  ...overrides,
+})
+
+// ==========================================
+// Test Suites
+// ==========================================
+describe('WebsiteCrawl', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+
+    // Reset store state
+    mockStoreState.crawlResult = undefined
+    mockStoreState.step = CrawlStep.init
+    mockStoreState.websitePages = []
+    mockStoreState.previewIndex = -1
+    mockStoreState.currentCredentialId = ''
+    mockStoreState.setWebsitePages = jest.fn()
+    mockStoreState.setCurrentWebsite = jest.fn()
+    mockStoreState.setPreviewIndex = jest.fn()
+    mockStoreState.setStep = jest.fn()
+    mockStoreState.setCrawlResult = jest.fn()
+
+    // Reset context values
+    mockPipelineId = 'pipeline-123'
+    mockSetShowAccountSettingModal.mockClear()
+
+    // Default mock return values
+    mockUseGetDataSourceAuth.mockReturnValue({
+      data: { result: [createMockCredential()] },
+    })
+
+    mockUseDraftPipelinePreProcessingParams.mockReturnValue({
+      data: { variables: [] },
+      isFetching: false,
+    })
+
+    mockUsePublishedPipelinePreProcessingParams.mockReturnValue({
+      data: { variables: [] },
+      isFetching: false,
+    })
+
+    mockGetState.mockReturnValue(mockStoreState)
+  })
+
+  // ==========================================
+  // Rendering Tests
+  // ==========================================
+  describe('Rendering', () => {
+    it('should render without crashing', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header')).toBeInTheDocument()
+      expect(screen.getByTestId('options')).toBeInTheDocument()
+    })
+
+    it('should render Header with correct props', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-123'
+      const props = createDefaultProps({
+        nodeData: createMockNodeData({ datasource_label: 'My Website Crawler' }),
+      })
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-doc-title')).toHaveTextContent('Docs')
+      expect(screen.getByTestId('header-plugin-name')).toHaveTextContent('My Website Crawler')
+      expect(screen.getByTestId('header-credential-id')).toHaveTextContent('cred-123')
+    })
+
+    it('should render Options with correct props', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('options')).toBeInTheDocument()
+      expect(screen.getByTestId('options-step')).toHaveTextContent(CrawlStep.init)
+    })
+
+    it('should not render Crawling or CrawledResult when step is init', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.init
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.queryByTestId('crawling')).not.toBeInTheDocument()
+      expect(screen.queryByTestId('crawled-result')).not.toBeInTheDocument()
+      expect(screen.queryByTestId('error-message')).not.toBeInTheDocument()
+    })
+
+    it('should render Crawling when step is running', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.running
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('crawling')).toBeInTheDocument()
+      expect(screen.queryByTestId('crawled-result')).not.toBeInTheDocument()
+      expect(screen.queryByTestId('error-message')).not.toBeInTheDocument()
+    })
+
+    it('should render CrawledResult when step is finished with no error', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('crawled-result')).toBeInTheDocument()
+      expect(screen.queryByTestId('crawling')).not.toBeInTheDocument()
+      expect(screen.queryByTestId('error-message')).not.toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Props Testing
+  // ==========================================
+  describe('Props', () => {
+    describe('nodeId prop', () => {
+      it('should use nodeId in datasourceNodeRunURL for non-pipeline mode', async () => {
+        // Arrange
+        mockStoreState.currentCredentialId = 'cred-1'
+        const props = createDefaultProps({
+          nodeId: 'custom-node-id',
+          isInPipeline: false,
+        })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert - Options uses nodeId through usePreProcessingParams
+        expect(mockUsePublishedPipelinePreProcessingParams).toHaveBeenCalledWith(
+          { pipeline_id: 'pipeline-123', node_id: 'custom-node-id' },
+          true,
+        )
+      })
+    })
+
+    describe('nodeData prop', () => {
+      it('should pass plugin_id and provider_name to useGetDataSourceAuth', () => {
+        // Arrange
+        const nodeData = createMockNodeData({
+          plugin_id: 'my-plugin-id',
+          provider_name: 'my-provider',
+        })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(mockUseGetDataSourceAuth).toHaveBeenCalledWith({
+          pluginId: 'my-plugin-id',
+          provider: 'my-provider',
+        })
+      })
+
+      it('should pass datasource_label to Header as pluginName', () => {
+        // Arrange
+        const nodeData = createMockNodeData({
+          datasource_label: 'Custom Website Scraper',
+        })
+        const props = createDefaultProps({ nodeData })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('header-plugin-name')).toHaveTextContent('Custom Website Scraper')
+      })
+    })
+
+    describe('isInPipeline prop', () => {
+      it('should use draft URL when isInPipeline is true', () => {
+        // Arrange
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(mockUseDraftPipelinePreProcessingParams).toHaveBeenCalled()
+        expect(mockUsePublishedPipelinePreProcessingParams).not.toHaveBeenCalled()
+      })
+
+      it('should use published URL when isInPipeline is false', () => {
+        // Arrange
+        const props = createDefaultProps({ isInPipeline: false })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(mockUsePublishedPipelinePreProcessingParams).toHaveBeenCalled()
+        expect(mockUseDraftPipelinePreProcessingParams).not.toHaveBeenCalled()
+      })
+
+      it('should pass showPreview as false to CrawledResult when isInPipeline is true', () => {
+        // Arrange
+        mockStoreState.step = CrawlStep.finished
+        mockStoreState.crawlResult = {
+          data: [createMockCrawlResultItem()],
+          time_consuming: 1.5,
+        }
+        const props = createDefaultProps({ isInPipeline: true })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('crawled-result-show-preview')).toHaveTextContent('false')
+      })
+
+      it('should pass showPreview as true to CrawledResult when isInPipeline is false', () => {
+        // Arrange
+        mockStoreState.step = CrawlStep.finished
+        mockStoreState.crawlResult = {
+          data: [createMockCrawlResultItem()],
+          time_consuming: 1.5,
+        }
+        const props = createDefaultProps({ isInPipeline: false })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('crawled-result-show-preview')).toHaveTextContent('true')
+      })
+    })
+
+    describe('supportBatchUpload prop', () => {
+      it('should pass isMultipleChoice as true to CrawledResult when supportBatchUpload is true', () => {
+        // Arrange
+        mockStoreState.step = CrawlStep.finished
+        mockStoreState.crawlResult = {
+          data: [createMockCrawlResultItem()],
+          time_consuming: 1.5,
+        }
+        const props = createDefaultProps({ supportBatchUpload: true })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('crawled-result-multiple-choice')).toHaveTextContent('true')
+      })
+
+      it('should pass isMultipleChoice as false to CrawledResult when supportBatchUpload is false', () => {
+        // Arrange
+        mockStoreState.step = CrawlStep.finished
+        mockStoreState.crawlResult = {
+          data: [createMockCrawlResultItem()],
+          time_consuming: 1.5,
+        }
+        const props = createDefaultProps({ supportBatchUpload: false })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('crawled-result-multiple-choice')).toHaveTextContent('false')
+      })
+
+      it.each([
+        [true, 'true'],
+        [false, 'false'],
+        [undefined, 'true'], // Default value
+      ])('should handle supportBatchUpload=%s correctly', (value, expected) => {
+        // Arrange
+        mockStoreState.step = CrawlStep.finished
+        mockStoreState.crawlResult = {
+          data: [createMockCrawlResultItem()],
+          time_consuming: 1.5,
+        }
+        const props = createDefaultProps({ supportBatchUpload: value })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+
+        // Assert
+        expect(screen.getByTestId('crawled-result-multiple-choice')).toHaveTextContent(expected)
+      })
+    })
+
+    describe('onCredentialChange prop', () => {
+      it('should call onCredentialChange with credential id and reset state', () => {
+        // Arrange
+        const mockOnCredentialChange = jest.fn()
+        const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+
+        // Act
+        render(<WebsiteCrawl {...props} />)
+        fireEvent.click(screen.getByTestId('header-credential-change'))
+
+        // Assert
+        expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+      })
+    })
+  })
+
+  // ==========================================
+  // State Management Tests
+  // ==========================================
+  describe('State Management', () => {
+    it('should display correct crawledNum and totalNum when running', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.running
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert - Initial state is 0/0
+      expect(screen.getByTestId('crawling-crawled-num')).toHaveTextContent('0')
+      expect(screen.getByTestId('crawling-total-num')).toHaveTextContent('0')
+    })
+
+    it('should update step and result via ssePost callbacks', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockCrawlData: CrawlResultItem[] = [
+        createMockCrawlResultItem({ source_url: 'https://example.com/1' }),
+        createMockCrawlResultItem({ source_url: 'https://example.com/2' }),
+      ]
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        // Simulate processing
+        callbacks.onDataSourceNodeProcessing({
+          total: 10,
+          completed: 5,
+        })
+        // Simulate completion
+        callbacks.onDataSourceNodeCompleted({
+          data: mockCrawlData,
+          time_consuming: 2.5,
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act - Trigger submit
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.running)
+        expect(mockStoreState.setCrawlResult).toHaveBeenCalledWith({
+          data: mockCrawlData,
+          time_consuming: 2.5,
+        })
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should pass runDisabled as true when no credential is selected', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = ''
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('options-run-disabled')).toHaveTextContent('true')
+    })
+
+    it('should pass runDisabled as true when params are being fetched', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockUsePublishedPipelinePreProcessingParams.mockReturnValue({
+        data: { variables: [] },
+        isFetching: true,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('options-run-disabled')).toHaveTextContent('true')
+    })
+
+    it('should pass runDisabled as false when credential is selected and params are loaded', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockUsePublishedPipelinePreProcessingParams.mockReturnValue({
+        data: { variables: [] },
+        isFetching: false,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('options-run-disabled')).toHaveTextContent('false')
+    })
+  })
+
+  // ==========================================
+  // Callback Stability and Memoization
+  // ==========================================
+  describe('Callback Stability and Memoization', () => {
+    it('should have stable handleCheckedCrawlResultChange that updates store', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('crawled-result-select-change'))
+
+      // Assert
+      expect(mockStoreState.setWebsitePages).toHaveBeenCalledWith([
+        { source_url: 'https://example.com', title: 'Test' },
+      ])
+    })
+
+    it('should have stable handlePreview that updates store', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('crawled-result-preview'))
+
+      // Assert
+      expect(mockStoreState.setCurrentWebsite).toHaveBeenCalledWith({
+        source_url: 'https://example.com',
+        title: 'Test',
+      })
+      expect(mockStoreState.setPreviewIndex).toHaveBeenCalledWith(0)
+    })
+
+    it('should have stable handleSetting callback', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-config-btn'))
+
+      // Assert
+      expect(mockSetShowAccountSettingModal).toHaveBeenCalledWith({
+        payload: ACCOUNT_SETTING_TAB.DATA_SOURCE,
+      })
+    })
+
+    it('should have stable handleCredentialChange that resets state', () => {
+      // Arrange
+      const mockOnCredentialChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-credential-change'))
+
+      // Assert
+      expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+    })
+  })
+
+  // ==========================================
+  // User Interactions and Event Handlers
+  // ==========================================
+  describe('User Interactions and Event Handlers', () => {
+    it('should handle submit and trigger ssePost', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.running)
+      })
+    })
+
+    it('should handle configuration button click', () => {
+      // Arrange
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-config-btn'))
+
+      // Assert
+      expect(mockSetShowAccountSettingModal).toHaveBeenCalledWith({
+        payload: ACCOUNT_SETTING_TAB.DATA_SOURCE,
+      })
+    })
+
+    it('should handle credential change', () => {
+      // Arrange
+      const mockOnCredentialChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('header-credential-change'))
+
+      // Assert
+      expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+    })
+
+    it('should handle selection change in CrawledResult', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('crawled-result-select-change'))
+
+      // Assert
+      expect(mockStoreState.setWebsitePages).toHaveBeenCalled()
+    })
+
+    it('should handle preview in CrawledResult', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('crawled-result-preview'))
+
+      // Assert
+      expect(mockStoreState.setCurrentWebsite).toHaveBeenCalled()
+      expect(mockStoreState.setPreviewIndex).toHaveBeenCalled()
+    })
+  })
+
+  // ==========================================
+  // API Calls Mocking
+  // ==========================================
+  describe('API Calls', () => {
+    it('should call ssePost with correct parameters for published workflow', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'test-cred'
+      mockPipelineId = 'pipeline-456'
+      const props = createDefaultProps({
+        nodeId: 'node-789',
+        isInPipeline: false,
+      })
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalledWith(
+          '/rag/pipelines/pipeline-456/workflows/published/datasource/nodes/node-789/run',
+          expect.objectContaining({
+            body: expect.objectContaining({
+              inputs: { url: 'https://example.com', depth: 2 },
+              datasource_type: 'website_crawl',
+              credential_id: 'test-cred',
+              response_mode: 'streaming',
+            }),
+          }),
+          expect.any(Object),
+        )
+      })
+    })
+
+    it('should call ssePost with correct parameters for draft workflow', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'test-cred'
+      mockPipelineId = 'pipeline-456'
+      const props = createDefaultProps({
+        nodeId: 'node-789',
+        isInPipeline: true,
+      })
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalledWith(
+          '/rag/pipelines/pipeline-456/workflows/draft/datasource/nodes/node-789/run',
+          expect.any(Object),
+          expect.any(Object),
+        )
+      })
+    })
+
+    it('should handle onDataSourceNodeProcessing callback correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      mockStoreState.step = CrawlStep.running
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeProcessing({
+          total: 100,
+          completed: 50,
+        })
+      })
+
+      const props = createDefaultProps()
+      const { rerender } = render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Update store state to simulate running step
+      mockStoreState.step = CrawlStep.running
+      rerender(<WebsiteCrawl {...props} />)
+
+      // Assert
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should handle onDataSourceNodeCompleted callback correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockCrawlData: CrawlResultItem[] = [
+        createMockCrawlResultItem({ source_url: 'https://example.com/1' }),
+        createMockCrawlResultItem({ source_url: 'https://example.com/2' }),
+      ]
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          data: mockCrawlData,
+          time_consuming: 3.5,
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setCrawlResult).toHaveBeenCalledWith({
+          data: mockCrawlData,
+          time_consuming: 3.5,
+        })
+        expect(mockStoreState.setWebsitePages).toHaveBeenCalledWith(mockCrawlData)
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should handle onDataSourceNodeCompleted with single result when supportBatchUpload is false', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockCrawlData: CrawlResultItem[] = [
+        createMockCrawlResultItem({ source_url: 'https://example.com/1' }),
+        createMockCrawlResultItem({ source_url: 'https://example.com/2' }),
+        createMockCrawlResultItem({ source_url: 'https://example.com/3' }),
+      ]
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          data: mockCrawlData,
+          time_consuming: 3.5,
+        })
+      })
+
+      const props = createDefaultProps({ supportBatchUpload: false })
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        // Should only select first item when supportBatchUpload is false
+        expect(mockStoreState.setWebsitePages).toHaveBeenCalledWith([mockCrawlData[0]])
+      })
+    })
+
+    it('should handle onDataSourceNodeError callback correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          error: 'Crawl failed: Invalid URL',
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should use useGetDataSourceAuth with correct parameters', () => {
+      // Arrange
+      const nodeData = createMockNodeData({
+        plugin_id: 'website-plugin',
+        provider_name: 'website-provider',
+      })
+      const props = createDefaultProps({ nodeData })
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(mockUseGetDataSourceAuth).toHaveBeenCalledWith({
+        pluginId: 'website-plugin',
+        provider: 'website-provider',
+      })
+    })
+
+    it('should pass credentials from useGetDataSourceAuth to Header', () => {
+      // Arrange
+      const mockCredentials = [
+        createMockCredential({ id: 'cred-1', name: 'Credential 1' }),
+        createMockCredential({ id: 'cred-2', name: 'Credential 2' }),
+      ]
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: mockCredentials },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('2')
+    })
+  })
+
+  // ==========================================
+  // Edge Cases and Error Handling
+  // ==========================================
+  describe('Edge Cases and Error Handling', () => {
+    it('should handle empty credentials array', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: [] },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined dataSourceAuth result', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: { result: undefined },
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle null dataSourceAuth data', () => {
+      // Arrange
+      mockUseGetDataSourceAuth.mockReturnValue({
+        data: null,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('header-credentials-count')).toHaveTextContent('0')
+    })
+
+    it('should handle empty crawlResult data array', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [],
+        time_consuming: 0.5,
+      }
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('crawled-result-count')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined crawlResult', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = undefined
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('crawled-result-count')).toHaveTextContent('0')
+    })
+
+    it('should handle time_consuming as string', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: '2.5',
+      }
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('crawled-result-used-time')).toHaveTextContent('2.5')
+    })
+
+    it('should handle invalid time_consuming value', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 'invalid',
+      }
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert - NaN should become 0
+      expect(screen.getByTestId('crawled-result-used-time')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined pipelineId gracefully', () => {
+      // Arrange
+      mockPipelineId = undefined
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(mockUsePublishedPipelinePreProcessingParams).toHaveBeenCalledWith(
+        { pipeline_id: undefined, node_id: 'node-1' },
+        false, // enabled should be false when pipelineId is undefined
+      )
+    })
+
+    it('should handle empty nodeId gracefully', () => {
+      // Arrange
+      const props = createDefaultProps({ nodeId: '' })
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(mockUsePublishedPipelinePreProcessingParams).toHaveBeenCalledWith(
+        { pipeline_id: 'pipeline-123', node_id: '' },
+        false, // enabled should be false when nodeId is empty
+      )
+    })
+
+    it('should handle undefined paramsConfig.variables (fallback to empty array)', () => {
+      // Arrange - Test the || [] fallback on line 169
+      mockUsePublishedPipelinePreProcessingParams.mockReturnValue({
+        data: { variables: undefined },
+        isFetching: false,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert - Options should receive empty array as variables
+      expect(screen.getByTestId('options-variables-count')).toHaveTextContent('0')
+    })
+
+    it('should handle undefined paramsConfig (fallback to empty array)', () => {
+      // Arrange - Test when paramsConfig is undefined
+      mockUsePublishedPipelinePreProcessingParams.mockReturnValue({
+        data: undefined,
+        isFetching: false,
+      })
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert - Options should receive empty array as variables
+      expect(screen.getByTestId('options-variables-count')).toHaveTextContent('0')
+    })
+
+    it('should handle error without error message', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          error: undefined,
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert - Should use fallback error message
+      await waitFor(() => {
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should handle null total and completed in processing callback', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeProcessing({
+          total: null,
+          completed: null,
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert - Should handle null values gracefully (default to 0)
+      await waitFor(() => {
+        expect(mockSsePost).toHaveBeenCalled()
+      })
+    })
+
+    it('should handle undefined time_consuming in completed callback', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeCompleted({
+          data: [createMockCrawlResultItem()],
+          time_consuming: undefined,
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setCrawlResult).toHaveBeenCalledWith({
+          data: [expect.any(Object)],
+          time_consuming: 0,
+        })
+      })
+    })
+  })
+
+  // ==========================================
+  // All Prop Variations
+  // ==========================================
+  describe('Prop Variations', () => {
+    it.each([
+      [{ isInPipeline: true, supportBatchUpload: true }],
+      [{ isInPipeline: true, supportBatchUpload: false }],
+      [{ isInPipeline: false, supportBatchUpload: true }],
+      [{ isInPipeline: false, supportBatchUpload: false }],
+    ])('should render correctly with props %o', (propVariation) => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps(propVariation)
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.getByTestId('crawled-result')).toBeInTheDocument()
+      expect(screen.getByTestId('crawled-result-show-preview')).toHaveTextContent(
+        String(!propVariation.isInPipeline),
+      )
+      expect(screen.getByTestId('crawled-result-multiple-choice')).toHaveTextContent(
+        String(propVariation.supportBatchUpload),
+      )
+    })
+
+    it('should use default values for optional props', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props: WebsiteCrawlProps = {
+        nodeId: 'node-1',
+        nodeData: createMockNodeData(),
+        onCredentialChange: jest.fn(),
+        // isInPipeline and supportBatchUpload are not provided
+      }
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert - Default values: isInPipeline = false, supportBatchUpload = true
+      expect(screen.getByTestId('crawled-result-show-preview')).toHaveTextContent('true')
+      expect(screen.getByTestId('crawled-result-multiple-choice')).toHaveTextContent('true')
+    })
+  })
+
+  // ==========================================
+  // Error Display
+  // ==========================================
+  describe('Error Display', () => {
+    it('should show ErrorMessage when crawl finishes with error', async () => {
+      // Arrange - Need to create a scenario where error message is set
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      // First render with init state
+      const props = createDefaultProps()
+      const { rerender } = render(<WebsiteCrawl {...props} />)
+
+      // Simulate error by setting up ssePost to call error callback
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          error: 'Network error',
+        })
+      })
+
+      // Trigger submit
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Now update store state to finished to simulate the state after error
+      mockStoreState.step = CrawlStep.finished
+      rerender(<WebsiteCrawl {...props} />)
+
+      // Assert - The component should check for error message state
+      await waitFor(() => {
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should not show ErrorMessage when crawl finishes without error', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [createMockCrawlResultItem()],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      expect(screen.queryByTestId('error-message')).not.toBeInTheDocument()
+      expect(screen.getByTestId('crawled-result')).toBeInTheDocument()
+    })
+  })
+
+  // ==========================================
+  // Integration Tests
+  // ==========================================
+  describe('Integration', () => {
+    it('should complete full workflow: submit -> running -> completed', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+      const mockCrawlData: CrawlResultItem[] = [
+        createMockCrawlResultItem({ source_url: 'https://example.com/1' }),
+        createMockCrawlResultItem({ source_url: 'https://example.com/2' }),
+      ]
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        // Simulate processing
+        callbacks.onDataSourceNodeProcessing({
+          total: 10,
+          completed: 5,
+        })
+        // Simulate completion
+        callbacks.onDataSourceNodeCompleted({
+          data: mockCrawlData,
+          time_consuming: 2.5,
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act - Trigger submit
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert - Verify full flow
+      await waitFor(() => {
+        // Step should be set to running first
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.running)
+        // Then result should be set
+        expect(mockStoreState.setCrawlResult).toHaveBeenCalledWith({
+          data: mockCrawlData,
+          time_consuming: 2.5,
+        })
+        // Pages should be selected
+        expect(mockStoreState.setWebsitePages).toHaveBeenCalledWith(mockCrawlData)
+        // Step should be set to finished
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should handle error flow correctly', async () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'cred-1'
+
+      mockSsePost.mockImplementation((url, options, callbacks) => {
+        callbacks.onDataSourceNodeError({
+          error: 'Failed to crawl website',
+        })
+      })
+
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act
+      fireEvent.click(screen.getByTestId('options-submit-btn'))
+
+      // Assert
+      await waitFor(() => {
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.running)
+        expect(mockStoreState.setStep).toHaveBeenCalledWith(CrawlStep.finished)
+      })
+    })
+
+    it('should handle credential change and allow new crawl', () => {
+      // Arrange
+      mockStoreState.currentCredentialId = 'initial-cred'
+      const mockOnCredentialChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange: mockOnCredentialChange })
+
+      // Act
+      render(<WebsiteCrawl {...props} />)
+
+      // Change credential
+      fireEvent.click(screen.getByTestId('header-credential-change'))
+
+      // Assert
+      expect(mockOnCredentialChange).toHaveBeenCalledWith('new-cred-id')
+    })
+
+    it('should handle preview selection after crawl completes', () => {
+      // Arrange
+      mockStoreState.step = CrawlStep.finished
+      mockStoreState.crawlResult = {
+        data: [
+          createMockCrawlResultItem({ source_url: 'https://example.com/1' }),
+          createMockCrawlResultItem({ source_url: 'https://example.com/2' }),
+        ],
+        time_consuming: 1.5,
+      }
+      const props = createDefaultProps()
+      render(<WebsiteCrawl {...props} />)
+
+      // Act - Preview first item
+      fireEvent.click(screen.getByTestId('crawled-result-preview'))
+
+      // Assert
+      expect(mockStoreState.setCurrentWebsite).toHaveBeenCalled()
+      expect(mockStoreState.setPreviewIndex).toHaveBeenCalledWith(0)
+    })
+  })
+
+  // ==========================================
+  // Component Memoization
+  // ==========================================
+  describe('Component Memoization', () => {
+    it('should be wrapped with React.memo', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { rerender } = render(<WebsiteCrawl {...props} />)
+      rerender(<WebsiteCrawl {...props} />)
+
+      // Assert - Component should still render correctly after rerender
+      expect(screen.getByTestId('header')).toBeInTheDocument()
+      expect(screen.getByTestId('options')).toBeInTheDocument()
+    })
+
+    it('should not re-run callbacks when props are the same', () => {
+      // Arrange
+      const onCredentialChange = jest.fn()
+      const props = createDefaultProps({ onCredentialChange })
+
+      // Act
+      const { rerender } = render(<WebsiteCrawl {...props} />)
+      rerender(<WebsiteCrawl {...props} />)
+
+      // Assert - The callback reference should be stable
+      fireEvent.click(screen.getByTestId('header-credential-change'))
+      expect(onCredentialChange).toHaveBeenCalledTimes(1)
+    })
+  })
+
+  // ==========================================
+  // Styling
+  // ==========================================
+  describe('Styling', () => {
+    it('should apply correct container classes', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      const rootDiv = container.firstChild as HTMLElement
+      expect(rootDiv).toHaveClass('flex', 'flex-col')
+    })
+
+    it('should apply correct classes to options container', () => {
+      // Arrange
+      const props = createDefaultProps()
+
+      // Act
+      const { container } = render(<WebsiteCrawl {...props} />)
+
+      // Assert
+      const optionsContainer = container.querySelector('.rounded-xl')
+      expect(optionsContainer).toBeInTheDocument()
+    })
+  })
+})