72 lines
2.7 KiB
JavaScript
72 lines
2.7 KiB
JavaScript
import fs from 'fs'
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import path from 'path'
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import { expect } from '@jest/globals'
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import { SURROGATE_ENUMS } from '../../middleware/set-fastly-surrogate-key.js'
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import { get } from '../helpers/supertest.js'
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function getNextStaticAsset(directory) {
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const root = path.join('.next', 'static', directory)
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const files = fs.readdirSync(root)
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if (!files.length) throw new Error(`Can't find any files in ${root}`)
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return path.join(root, files[0])
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}
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function checkCachingHeaders(res, defaultSurrogateKey = false, minMaxAge = 60 * 60) {
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expect(res.headers['set-cookie']).toBeUndefined()
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expect(res.headers['cache-control']).toContain('public')
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const maxAgeSeconds = parseInt(res.header['cache-control'].match(/max-age=(\d+)/)[1], 10)
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// Let's not be too specific in the tests, just as long as it's testing
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// that it's a reasonably large number of seconds.
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expect(maxAgeSeconds).toBeGreaterThanOrEqual(minMaxAge)
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// Because it doesn't have have a unique URL
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expect(res.headers['surrogate-key']).toBe(
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defaultSurrogateKey ? SURROGATE_ENUMS.DEFAULT : SURROGATE_ENUMS.MANUAL
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)
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}
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describe('static assets', () => {
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it('should serve /assets/cb-* with optimal headers', async () => {
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const res = await get('/assets/cb-1234/images/site/logo.png')
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expect(res.statusCode).toBe(200)
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checkCachingHeaders(res)
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})
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it('should serve /assets/ with optimal headers', async () => {
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const res = await get('/assets/images/site/logo.png')
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expect(res.statusCode).toBe(200)
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checkCachingHeaders(res, true)
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})
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it('should serve /_next/static/ with optimal headers', async () => {
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// This picks the first one found. We just need it to be anything
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// that actually resolves.
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const filePath = getNextStaticAsset('css')
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const asURL = '/' + filePath.replace('.next', '_next').split(path.sep).join('/')
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const res = await get(asURL)
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expect(res.statusCode).toBe(200)
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checkCachingHeaders(res)
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})
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it('should 404 on /assets/cb-* with plain text', async () => {
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const res = await get('/assets/cb-1234/never/heard/of.png')
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expect(res.statusCode).toBe(404)
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expect(res.header['content-type']).toContain('text/plain')
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// Only a tiny amount of Cache-Control on these
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checkCachingHeaders(res, true, 60)
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})
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it('should 404 on /assets/ with plain text', async () => {
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const res = await get('/assets/never/heard/of.png')
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expect(res.statusCode).toBe(404)
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expect(res.header['content-type']).toContain('text/plain')
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checkCachingHeaders(res, true, 60)
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})
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it('should 404 on /_next/static/ with plain text', async () => {
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const res = await get('/_next/static/never/heard/of.css')
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expect(res.statusCode).toBe(404)
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expect(res.header['content-type']).toContain('text/plain')
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checkCachingHeaders(res, true, 60)
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})
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})
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