tests/metadata/test_testcase_builder.py

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from tests.common.impala_test_suite import ImpalaTestSuite
from tests.common.test_dimensions import (
  create_single_exec_option_dimension,
  create_uncompressed_text_dimension)
from tests.util.filesystem_utils import get_fs_path


class TestTestcaseBuilder(ImpalaTestSuite):

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

  @classmethod
  def add_test_dimensions(cls):
    super(TestTestcaseBuilder, cls).add_test_dimensions()
    # This test only needs to be run once.
    cls.ImpalaTestMatrix.add_dimension(create_single_exec_option_dimension())
    cls.ImpalaTestMatrix.add_dimension(
      create_uncompressed_text_dimension(cls.get_workload()))

  def test_query_without_from(self):
    tmp_path = get_fs_path("/tmp")
    # Generate Testcase Data for query without table reference
    testcase_generate_query = """COPY TESTCASE TO '%s' SELECT 5 * 20""" % tmp_path
    result = self.execute_query_expect_success(self.client, testcase_generate_query)
    assert len(result.data) == 1, "Testcase builder wrong result: {0}".format(result.data)

    # Check file exists
    testcase_path = str(result.data)[1: -1]
    index = testcase_path.index('/tmp')
    hdfs_path = testcase_path[index:-1]
    assert self.filesystem_client.exists(hdfs_path), \
        "File not generated {0}".format(hdfs_path)

    try:
      # Test load testcase works
      testcase_load_query = "COPY TESTCASE FROM {0}".format(testcase_path)
      self.execute_query_expect_success(self.client, testcase_load_query)
    finally:
      # Delete testcase file from tmp
      status = self.filesystem_client.delete_file_dir(hdfs_path)
      assert status, "Delete generated testcase file failed with {0}".format(status)