tests/query_test/test_codegen.py

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# Tests end-to-end codegen behaviour.

from tests.common.impala_test_suite import ImpalaTestSuite
from tests.common.test_dimensions import create_exec_option_dimension_from_dict

class TestCodegen(ImpalaTestSuite):
  @classmethod
  def get_workload(self):
    return 'functional-query'

  @classmethod
  def add_test_dimensions(cls):
    super(TestCodegen, cls).add_test_dimensions()
    cls.ImpalaTestMatrix.add_dimension(create_exec_option_dimension_from_dict({
        'exec_single_node_rows_threshold' : [0]}))
    # No need to run this on all file formats. Run it on text/none, which has stats
    # computed.
    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_disable_codegen(self, vector):
    """Test that codegen is enabled/disabled by the planner as expected."""
    self.run_test_case('QueryTest/disable-codegen', vector)