gmock_leak_test.py

#!/usr/bin/env python
#
# Copyright 2009, Google Inc.
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"""Tests that leaked mock objects can be caught be Google Mock."""

from googlemock.test import gmock_test_utils

PROGRAM_PATH = gmock_test_utils.GetTestExecutablePath('gmock_leak_test_')
TEST_WITH_EXPECT_CALL = [PROGRAM_PATH, '--gtest_filter=*ExpectCall*']
TEST_WITH_ON_CALL = [PROGRAM_PATH, '--gtest_filter=*OnCall*']
TEST_MULTIPLE_LEAKS = [PROGRAM_PATH, '--gtest_filter=*MultipleLeaked*']

environ = gmock_test_utils.environ
SetEnvVar = gmock_test_utils.SetEnvVar

# Tests in this file run a Google-Test-based test program and expect it
# to terminate prematurely.  Therefore they are incompatible with
# the premature-exit-file protocol by design.  Unset the
# premature-exit filepath to prevent Google Test from creating
# the file.
SetEnvVar(gmock_test_utils.PREMATURE_EXIT_FILE_ENV_VAR, None)


class GMockLeakTest(gmock_test_utils.TestCase):

  def testCatchesLeakedMockByDefault(self):
    self.assertNotEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_WITH_EXPECT_CALL, env=environ
        ).exit_code,
    )
    self.assertNotEqual(
        0, gmock_test_utils.Subprocess(TEST_WITH_ON_CALL, env=environ).exit_code
    )

  def testDoesNotCatchLeakedMockWhenDisabled(self):
    self.assertEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_WITH_EXPECT_CALL + ['--gmock_catch_leaked_mocks=0'],
            env=environ,
        ).exit_code,
    )
    self.assertEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_WITH_ON_CALL + ['--gmock_catch_leaked_mocks=0'], env=environ
        ).exit_code,
    )

  def testCatchesLeakedMockWhenEnabled(self):
    self.assertNotEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_WITH_EXPECT_CALL + ['--gmock_catch_leaked_mocks'], env=environ
        ).exit_code,
    )
    self.assertNotEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_WITH_ON_CALL + ['--gmock_catch_leaked_mocks'], env=environ
        ).exit_code,
    )

  def testCatchesLeakedMockWhenEnabledWithExplictFlagValue(self):
    self.assertNotEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_WITH_EXPECT_CALL + ['--gmock_catch_leaked_mocks=1'],
            env=environ,
        ).exit_code,
    )

  def testCatchesMultipleLeakedMocks(self):
    self.assertNotEqual(
        0,
        gmock_test_utils.Subprocess(
            TEST_MULTIPLE_LEAKS + ['--gmock_catch_leaked_mocks'], env=environ
        ).exit_code,
    )


if __name__ == '__main__':
  gmock_test_utils.Main()