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dynamicbitset/gtest-1.7.0/test/gtest_help_test.py
Go to file#!/usr/bin/env python | |
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# Copyright 2009, Google Inc. | |
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"""Tests the --help flag of Google C++ Testing Framework. | |
SYNOPSIS | |
gtest_help_test.py --build_dir=BUILD/DIR | |
# where BUILD/DIR contains the built gtest_help_test_ file. | |
gtest_help_test.py | |
""" | |
__author__ = 'wan@google.com (Zhanyong Wan)' | |
import os | |
import re | |
import gtest_test_utils | |
IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux' | |
IS_WINDOWS = os.name == 'nt' | |
PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('gtest_help_test_') | |
FLAG_PREFIX = '--gtest_' | |
DEATH_TEST_STYLE_FLAG = FLAG_PREFIX + 'death_test_style' | |
STREAM_RESULT_TO_FLAG = FLAG_PREFIX + 'stream_result_to' | |
UNKNOWN_FLAG = FLAG_PREFIX + 'unknown_flag_for_testing' | |
LIST_TESTS_FLAG = FLAG_PREFIX + 'list_tests' | |
INCORRECT_FLAG_VARIANTS = [re.sub('^--', '-', LIST_TESTS_FLAG), | |
re.sub('^--', '/', LIST_TESTS_FLAG), | |
re.sub('_', '-', LIST_TESTS_FLAG)] | |
INTERNAL_FLAG_FOR_TESTING = FLAG_PREFIX + 'internal_flag_for_testing' | |
SUPPORTS_DEATH_TESTS = "DeathTest" in gtest_test_utils.Subprocess( | |
[PROGRAM_PATH, LIST_TESTS_FLAG]).output | |
# The help message must match this regex. | |
HELP_REGEX = re.compile( | |
FLAG_PREFIX + r'list_tests.*' + | |
FLAG_PREFIX + r'filter=.*' + | |
FLAG_PREFIX + r'also_run_disabled_tests.*' + | |
FLAG_PREFIX + r'repeat=.*' + | |
FLAG_PREFIX + r'shuffle.*' + | |
FLAG_PREFIX + r'random_seed=.*' + | |
FLAG_PREFIX + r'color=.*' + | |
FLAG_PREFIX + r'print_time.*' + | |
FLAG_PREFIX + r'output=.*' + | |
FLAG_PREFIX + r'break_on_failure.*' + | |
FLAG_PREFIX + r'throw_on_failure.*' + | |
FLAG_PREFIX + r'catch_exceptions=0.*', | |
re.DOTALL) | |
def RunWithFlag(flag): | |
"""Runs gtest_help_test_ with the given flag. | |
Returns: | |
the exit code and the text output as a tuple. | |
Args: | |
flag: the command-line flag to pass to gtest_help_test_, or None. | |
""" | |
if flag is None: | |
command = [PROGRAM_PATH] | |
else: | |
command = [PROGRAM_PATH, flag] | |
child = gtest_test_utils.Subprocess(command) | |
return child.exit_code, child.output | |
class GTestHelpTest(gtest_test_utils.TestCase): | |
"""Tests the --help flag and its equivalent forms.""" | |
def TestHelpFlag(self, flag): | |
"""Verifies correct behavior when help flag is specified. | |
The right message must be printed and the tests must | |
skipped when the given flag is specified. | |
Args: | |
flag: A flag to pass to the binary or None. | |
""" | |
exit_code, output = RunWithFlag(flag) | |
self.assertEquals(0, exit_code) | |
self.assert_(HELP_REGEX.search(output), output) | |
if IS_LINUX: | |
self.assert_(STREAM_RESULT_TO_FLAG in output, output) | |
else: | |
self.assert_(STREAM_RESULT_TO_FLAG not in output, output) | |
if SUPPORTS_DEATH_TESTS and not IS_WINDOWS: | |
self.assert_(DEATH_TEST_STYLE_FLAG in output, output) | |
else: | |
self.assert_(DEATH_TEST_STYLE_FLAG not in output, output) | |
def TestNonHelpFlag(self, flag): | |
"""Verifies correct behavior when no help flag is specified. | |
Verifies that when no help flag is specified, the tests are run | |
and the help message is not printed. | |
Args: | |
flag: A flag to pass to the binary or None. | |
""" | |
exit_code, output = RunWithFlag(flag) | |
self.assert_(exit_code != 0) | |
self.assert_(not HELP_REGEX.search(output), output) | |
def testPrintsHelpWithFullFlag(self): | |
self.TestHelpFlag('--help') | |
def testPrintsHelpWithShortFlag(self): | |
self.TestHelpFlag('-h') | |
def testPrintsHelpWithQuestionFlag(self): | |
self.TestHelpFlag('-?') | |
def testPrintsHelpWithWindowsStyleQuestionFlag(self): | |
self.TestHelpFlag('/?') | |
def testPrintsHelpWithUnrecognizedGoogleTestFlag(self): | |
self.TestHelpFlag(UNKNOWN_FLAG) | |
def testPrintsHelpWithIncorrectFlagStyle(self): | |
for incorrect_flag in INCORRECT_FLAG_VARIANTS: | |
self.TestHelpFlag(incorrect_flag) | |
def testRunsTestsWithoutHelpFlag(self): | |
"""Verifies that when no help flag is specified, the tests are run | |
and the help message is not printed.""" | |
self.TestNonHelpFlag(None) | |
def testRunsTestsWithGtestInternalFlag(self): | |
"""Verifies that the tests are run and no help message is printed when | |
a flag starting with Google Test prefix and 'internal_' is supplied.""" | |
self.TestNonHelpFlag(INTERNAL_FLAG_FOR_TESTING) | |
if __name__ == '__main__': | |
gtest_test_utils.Main() |