gmock_leak_test.py

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#!/usr/bin/env python
#
# Copyright 2009, Google Inc.
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# modification, are permitted provided that the following conditions are
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#     * Redistributions of source code must retain the above copyright
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#     * Redistributions in binary form must reproduce the above
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"""Tests that leaked mock objects can be caught be Google Mock."""

__author__ = 'wan@google.com (Zhanyong Wan)'


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.assertEquals(
        0,
        gmock_test_utils.Subprocess(TEST_WITH_EXPECT_CALL +
                                    ['--gmock_catch_leaked_mocks=0'],
                                    env=environ).exit_code)
    self.assertEquals(
        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()