The Tor Browser / file revision

 #!/usr/bin/env python

 #

 # Copyright 2008, Google Inc.

 # All rights reserved.

 #

 # Redistribution and use in source and binary forms, with or without

 # modification, are permitted provided that the following conditions are

 # met:

 #

 #     * Redistributions of source code must retain the above copyright

 # notice, this list of conditions and the following disclaimer.

 #     * Redistributions in binary form must reproduce the above

 # copyright notice, this list of conditions and the following disclaimer

 # in the documentation and/or other materials provided with the

 # distribution.

 #     * Neither the name of Google Inc. nor the names of its

 # contributors may be used to endorse or promote products derived from

 # this software without specific prior written permission.

 #

 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 """Verifies that Google Test correctly parses environment variables."""

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

 import os

 import gtest_test_utils

 IS_WINDOWS = os.name == 'nt'

 IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'

 COMMAND = gtest_test_utils.GetTestExecutablePath('gtest_env_var_test_')

 environ = os.environ.copy()

 def AssertEq(expected, actual):

   if expected != actual:

     print 'Expected: %s' % (expected,)

     print '  Actual: %s' % (actual,)

     raise AssertionError

 def SetEnvVar(env_var, value):

   """Sets the env variable to 'value'; unsets it when 'value' is None."""

   if value is not None:

     environ[env_var] = value

   elif env_var in environ:

     del environ[env_var]

 def GetFlag(flag):

   """Runs gtest_env_var_test_ and returns its output."""

   args = [COMMAND]

   if flag is not None:

     args += [flag]

   return gtest_test_utils.Subprocess(args, env=environ,

                                      capture_stderr=False).output

 def TestFlag(flag, test_val, default_val):

   """Verifies that the given flag is affected by the corresponding env var."""

   env_var = 'GTEST_' + flag.upper()

   SetEnvVar(env_var, test_val)

   AssertEq(test_val, GetFlag(flag))

   SetEnvVar(env_var, None)

   AssertEq(default_val, GetFlag(flag))

 class GTestEnvVarTest(gtest_test_utils.TestCase):

   def testEnvVarAffectsFlag(self):

     """Tests that environment variable should affect the corresponding flag."""

     TestFlag('break_on_failure', '1', '0')

     TestFlag('color', 'yes', 'auto')

     TestFlag('filter', 'FooTest.Bar', '*')

     TestFlag('output', 'xml:tmp/foo.xml', '')

     TestFlag('print_time', '0', '1')

     TestFlag('repeat', '999', '1')

     TestFlag('throw_on_failure', '1', '0')

     TestFlag('death_test_style', 'threadsafe', 'fast')

     TestFlag('catch_exceptions', '0', '1')

     if IS_LINUX:

       TestFlag('death_test_use_fork', '1', '0')

       TestFlag('stack_trace_depth', '0', '100')

 if __name__ == '__main__':

   gtest_test_utils.Main()