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from __future__ import absolute_import, division, print_function
import pytest

from tests.common.custom_cluster_test_suite import CustomClusterTestSuite


class TestIcebergStrictDataFileLocation(CustomClusterTestSuite):
  """Tests for checking the behaviour of startup flag
   'iceberg_allow_datafiles_in_table_location_only'."""

  SELECT_STATEMENT = "SELECT COUNT(1) FROM " \
    "functional_parquet.iceberg_multiple_storage_locations"
  EXCEPTION = "IcebergTableLoadingException: " \
    "Error loading metadata for Iceberg table"

  @CustomClusterTestSuite.with_args(
      catalogd_args='--iceberg_allow_datafiles_in_table_location_only=true')
  @pytest.mark.execute_serially
  def test_restricted_location(self, vector):
    """If the flag is enabled, tables with multiple storage locations will fail
    to load their datafiles."""
    result = self.execute_query_expect_failure(self.client, self.SELECT_STATEMENT)
    assert self.EXCEPTION in str(result)

  @CustomClusterTestSuite.with_args(
      catalogd_args='--iceberg_allow_datafiles_in_table_location_only=false')
  @pytest.mark.execute_serially
  def test_disabled(self, vector):
    """If the flag is disabled, and tables with multiple storage locations
    are configured properly, the tables load successfully."""
    result = self.execute_query_expect_success(self.client, self.SELECT_STATEMENT)
    assert '9' in result.data
    self.run_test_case('QueryTest/iceberg-multiple-storage-locations-table', vector)