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# 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.

# This test suite validates the scanners by running queries against ALL file formats and
# their permutations (e.g. compression codec/compression type). This works by exhaustively
# generating the table format test vectors for this specific test suite. This way, other
# tests can run with the normal exploration strategy and the overall test runtime doesn't
# explode.

from tests.common.impala_test_suite import ImpalaTestSuite

class TestTimeZones(ImpalaTestSuite):
  @classmethod
  def get_workload(cls):
    return 'functional-query'

  @classmethod
  def add_test_dimensions(cls):
    super(TestTimeZones, cls).add_test_dimensions()

    cls.ImpalaTestMatrix.add_constraint(lambda v:\
        v.get_value('table_format').file_format == 'text' and\
        v.get_value('table_format').compression_codec == 'none')

  def test_timezones(self, vector):
    result = self.client.execute("select timezone, utctime, localtime, \
        from_utc_timestamp(utctime,timezone) as impalaresult from functional.alltimezones \
        where localtime != from_utc_timestamp(utctime,timezone)")
    assert(len(result.data) == 0)