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/thirdparty/breakpad/third_party/protobuf/protobuf/gtest/test/gtest_help_test.py

http://github.com/tomahawk-player/tomahawk
Python | 169 lines | 77 code | 27 blank | 65 comment | 14 complexity | dc0fb9ccd3055360c3b150d819c5de7a MD5 | raw file
  1#!/usr/bin/env python
  2#
  3# Copyright 2009, Google Inc.
  4# All rights reserved.
  5#
  6# Redistribution and use in source and binary forms, with or without
  7# modification, are permitted provided that the following conditions are
  8# met:
  9#
 10#     * Redistributions of source code must retain the above copyright
 11# notice, this list of conditions and the following disclaimer.
 12#     * Redistributions in binary form must reproduce the above
 13# copyright notice, this list of conditions and the following disclaimer
 14# in the documentation and/or other materials provided with the
 15# distribution.
 16#     * Neither the name of Google Inc. nor the names of its
 17# contributors may be used to endorse or promote products derived from
 18# this software without specific prior written permission.
 19#
 20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 21# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 22# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 23# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 24# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 25# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 26# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 27# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 28# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 29# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 30# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 31
 32"""Tests the --help flag of Google C++ Testing Framework.
 33
 34SYNOPSIS
 35       gtest_help_test.py --gtest_build_dir=BUILD/DIR
 36         # where BUILD/DIR contains the built gtest_help_test_ file.
 37       gtest_help_test.py
 38"""
 39
 40__author__ = 'wan@google.com (Zhanyong Wan)'
 41
 42import os
 43import re
 44import gtest_test_utils
 45
 46
 47IS_WINDOWS = os.name == 'nt'
 48
 49PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('gtest_help_test_')
 50FLAG_PREFIX = '--gtest_'
 51CATCH_EXCEPTIONS_FLAG = FLAG_PREFIX + 'catch_exceptions'
 52DEATH_TEST_STYLE_FLAG = FLAG_PREFIX + 'death_test_style'
 53UNKNOWN_FLAG = FLAG_PREFIX + 'unknown_flag_for_testing'
 54LIST_TESTS_FLAG = FLAG_PREFIX + 'list_tests'
 55INCORRECT_FLAG_VARIANTS = [re.sub('^--', '-', LIST_TESTS_FLAG),
 56                           re.sub('^--', '/', LIST_TESTS_FLAG),
 57                           re.sub('_', '-', LIST_TESTS_FLAG)]
 58INTERNAL_FLAG_FOR_TESTING = FLAG_PREFIX + 'internal_flag_for_testing'
 59
 60SUPPORTS_DEATH_TESTS = "DeathTest" in gtest_test_utils.Subprocess(
 61    [PROGRAM_PATH, LIST_TESTS_FLAG]).output
 62
 63# The help message must match this regex.
 64HELP_REGEX = re.compile(
 65    FLAG_PREFIX + r'list_tests.*' +
 66    FLAG_PREFIX + r'filter=.*' +
 67    FLAG_PREFIX + r'also_run_disabled_tests.*' +
 68    FLAG_PREFIX + r'repeat=.*' +
 69    FLAG_PREFIX + r'shuffle.*' +
 70    FLAG_PREFIX + r'random_seed=.*' +
 71    FLAG_PREFIX + r'color=.*' +
 72    FLAG_PREFIX + r'print_time.*' +
 73    FLAG_PREFIX + r'output=.*' +
 74    FLAG_PREFIX + r'break_on_failure.*' +
 75    FLAG_PREFIX + r'throw_on_failure.*',
 76    re.DOTALL)
 77
 78
 79def RunWithFlag(flag):
 80  """Runs gtest_help_test_ with the given flag.
 81
 82  Returns:
 83    the exit code and the text output as a tuple.
 84  Args:
 85    flag: the command-line flag to pass to gtest_help_test_, or None.
 86  """
 87
 88  if flag is None:
 89    command = [PROGRAM_PATH]
 90  else:
 91    command = [PROGRAM_PATH, flag]
 92  child = gtest_test_utils.Subprocess(command)
 93  return child.exit_code, child.output
 94
 95
 96class GTestHelpTest(gtest_test_utils.TestCase):
 97  """Tests the --help flag and its equivalent forms."""
 98
 99  def TestHelpFlag(self, flag):
100    """Verifies correct behavior when help flag is specified.
101
102    The right message must be printed and the tests must
103    skipped when the given flag is specified.
104
105    Args:
106      flag:  A flag to pass to the binary or None.
107    """
108
109    exit_code, output = RunWithFlag(flag)
110    self.assertEquals(0, exit_code)
111    self.assert_(HELP_REGEX.search(output), output)
112    if IS_WINDOWS:
113      self.assert_(CATCH_EXCEPTIONS_FLAG in output, output)
114    else:
115      self.assert_(CATCH_EXCEPTIONS_FLAG not in output, output)
116
117    if SUPPORTS_DEATH_TESTS and not IS_WINDOWS:
118      self.assert_(DEATH_TEST_STYLE_FLAG in output, output)
119    else:
120      self.assert_(DEATH_TEST_STYLE_FLAG not in output, output)
121
122  def TestNonHelpFlag(self, flag):
123    """Verifies correct behavior when no help flag is specified.
124
125    Verifies that when no help flag is specified, the tests are run
126    and the help message is not printed.
127
128    Args:
129      flag:  A flag to pass to the binary or None.
130    """
131
132    exit_code, output = RunWithFlag(flag)
133    self.assert_(exit_code != 0)
134    self.assert_(not HELP_REGEX.search(output), output)
135
136  def testPrintsHelpWithFullFlag(self):
137    self.TestHelpFlag('--help')
138
139  def testPrintsHelpWithShortFlag(self):
140    self.TestHelpFlag('-h')
141
142  def testPrintsHelpWithQuestionFlag(self):
143    self.TestHelpFlag('-?')
144
145  def testPrintsHelpWithWindowsStyleQuestionFlag(self):
146    self.TestHelpFlag('/?')
147
148  def testPrintsHelpWithUnrecognizedGoogleTestFlag(self):
149    self.TestHelpFlag(UNKNOWN_FLAG)
150
151  def testPrintsHelpWithIncorrectFlagStyle(self):
152    for incorrect_flag in INCORRECT_FLAG_VARIANTS:
153      self.TestHelpFlag(incorrect_flag)
154
155  def testRunsTestsWithoutHelpFlag(self):
156    """Verifies that when no help flag is specified, the tests are run
157    and the help message is not printed."""
158
159    self.TestNonHelpFlag(None)
160
161  def testRunsTestsWithGtestInternalFlag(self):
162    """Verifies that the tests are run and no help message is printed when
163    a flag starting with Google Test prefix and 'internal_' is supplied."""
164
165    self.TestNonHelpFlag(INTERNAL_FLAG_FOR_TESTING)
166
167
168if __name__ == '__main__':
169  gtest_test_utils.Main()