text: # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  import pytest
  from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
  from tests.common.impala_test_suite import ImpalaTestSuite
  from tests.common.test_vector import ImpalaTestDimension
  from tests.common.skip import SkipIfABFS, SkipIfADLS, SkipIfS3
  from tests.common.test_dimensions import create_exec_option_dimension
  
  class TestLocalTzConversion(CustomClusterTestSuite):
    """Tests for --use_local_tz_for_unix_timestamp_conversions"""
  
    @classmethod
    def add_test_dimensions(cls):
      super(TestLocalTzConversion, cls).add_test_dimensions()
      cls.ImpalaTestMatrix.add_dimension(create_exec_option_dimension(
          cluster_sizes=[0], disable_codegen_options=[False, True], batch_sizes=[0]))
      # Test with and without expr rewrites to cover regular expr evaluations
      # as well as constant folding, in particular, timestamp literals.
      cls.ImpalaTestMatrix.add_dimension(
          ImpalaTestDimension('enable_expr_rewrites', *[0,1]))
  
    @classmethod
    def add_custom_cluster_constraints(cls):
      # Do not call the super() implementation because this class needs to relax the
      # set of constraints.
      cls.ImpalaTestMatrix.add_constraint(lambda v:
          v.get_value('table_format').file_format == 'text' and
          v.get_value('table_format').compression_codec == 'none')
  
    @classmethod
    def get_workload(self):
      return 'functional-query'
  
    @SkipIfABFS.hbase
    @SkipIfADLS.hbase
    @SkipIfS3.hbase
    @pytest.mark.execute_serially
    @CustomClusterTestSuite.with_args("--use_local_tz_for_unix_timestamp_conversions=true")
    def test_timestamp_functions(self, vector):
      """Tests timestamp functions with --use_local_tz_for_unix_timestamp_conversions=true
      """
      vector.get_value('exec_option')['enable_expr_rewrites'] = \
          vector.get_value('enable_expr_rewrites')
  
      # Tests for UTC timestamp functions, i.e. functions that do not depend on the
      # behavior of the flag --use_local_tz_for_unix_timestamp_conversions. These tests
      # are also executed in test_exprs.py to ensure the same behavior when running
      # without the gflag set.
      self.run_test_case('QueryTest/utc-timestamp-functions', vector)
  
      # Tests for local timestamp functions, i.e. functions that depend on the
      # behavior of the flag --use_local_tz_for_unix_timestamp_conversions.
      self.run_test_case('QueryTest/local-timestamp-functions', vector)
  
      # Test that scanning of different file formats is not affected by flag
      # use_local_tz_for_unix_timestamp_conversions.
      self.run_test_case('QueryTest/file-formats-with-local-tz-conversion', vector)
  