github.com/jlmucb/cloudproxy@v0.0.0-20170830161738-b5aa0b619bc4/src/third_party/googlemock/gtest/test/gtest_throw_on_failure_test.py (about)

     1  #!/usr/bin/env python
     2  #
     3  # Copyright 2009, Google Inc.
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    30  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    31  
    32  """Tests Google Test's throw-on-failure mode with exceptions disabled.
    33  
    34  This script invokes gtest_throw_on_failure_test_ (a program written with
    35  Google Test) with different environments and command line flags.
    36  """
    37  
    38  __author__ = 'wan@google.com (Zhanyong Wan)'
    39  
    40  import os
    41  import gtest_test_utils
    42  
    43  
    44  # Constants.
    45  
    46  # The command line flag for enabling/disabling the throw-on-failure mode.
    47  THROW_ON_FAILURE = 'gtest_throw_on_failure'
    48  
    49  # Path to the gtest_throw_on_failure_test_ program, compiled with
    50  # exceptions disabled.
    51  EXE_PATH = gtest_test_utils.GetTestExecutablePath(
    52      'gtest_throw_on_failure_test_')
    53  
    54  
    55  # Utilities.
    56  
    57  
    58  def SetEnvVar(env_var, value):
    59    """Sets an environment variable to a given value; unsets it when the
    60    given value is None.
    61    """
    62  
    63    env_var = env_var.upper()
    64    if value is not None:
    65      os.environ[env_var] = value
    66    elif env_var in os.environ:
    67      del os.environ[env_var]
    68  
    69  
    70  def Run(command):
    71    """Runs a command; returns True/False if its exit code is/isn't 0."""
    72  
    73    print 'Running "%s". . .' % ' '.join(command)
    74    p = gtest_test_utils.Subprocess(command)
    75    return p.exited and p.exit_code == 0
    76  
    77  
    78  # The tests.  TODO(wan@google.com): refactor the class to share common
    79  # logic with code in gtest_break_on_failure_unittest.py.
    80  class ThrowOnFailureTest(gtest_test_utils.TestCase):
    81    """Tests the throw-on-failure mode."""
    82  
    83    def RunAndVerify(self, env_var_value, flag_value, should_fail):
    84      """Runs gtest_throw_on_failure_test_ and verifies that it does
    85      (or does not) exit with a non-zero code.
    86  
    87      Args:
    88        env_var_value:    value of the GTEST_BREAK_ON_FAILURE environment
    89                          variable; None if the variable should be unset.
    90        flag_value:       value of the --gtest_break_on_failure flag;
    91                          None if the flag should not be present.
    92        should_fail:      True iff the program is expected to fail.
    93      """
    94  
    95      SetEnvVar(THROW_ON_FAILURE, env_var_value)
    96  
    97      if env_var_value is None:
    98        env_var_value_msg = ' is not set'
    99      else:
   100        env_var_value_msg = '=' + env_var_value
   101  
   102      if flag_value is None:
   103        flag = ''
   104      elif flag_value == '0':
   105        flag = '--%s=0' % THROW_ON_FAILURE
   106      else:
   107        flag = '--%s' % THROW_ON_FAILURE
   108  
   109      command = [EXE_PATH]
   110      if flag:
   111        command.append(flag)
   112  
   113      if should_fail:
   114        should_or_not = 'should'
   115      else:
   116        should_or_not = 'should not'
   117  
   118      failed = not Run(command)
   119  
   120      SetEnvVar(THROW_ON_FAILURE, None)
   121  
   122      msg = ('when %s%s, an assertion failure in "%s" %s cause a non-zero '
   123             'exit code.' %
   124             (THROW_ON_FAILURE, env_var_value_msg, ' '.join(command),
   125              should_or_not))
   126      self.assert_(failed == should_fail, msg)
   127  
   128    def testDefaultBehavior(self):
   129      """Tests the behavior of the default mode."""
   130  
   131      self.RunAndVerify(env_var_value=None, flag_value=None, should_fail=False)
   132  
   133    def testThrowOnFailureEnvVar(self):
   134      """Tests using the GTEST_THROW_ON_FAILURE environment variable."""
   135  
   136      self.RunAndVerify(env_var_value='0',
   137                        flag_value=None,
   138                        should_fail=False)
   139      self.RunAndVerify(env_var_value='1',
   140                        flag_value=None,
   141                        should_fail=True)
   142  
   143    def testThrowOnFailureFlag(self):
   144      """Tests using the --gtest_throw_on_failure flag."""
   145  
   146      self.RunAndVerify(env_var_value=None,
   147                        flag_value='0',
   148                        should_fail=False)
   149      self.RunAndVerify(env_var_value=None,
   150                        flag_value='1',
   151                        should_fail=True)
   152  
   153    def testThrowOnFailureFlagOverridesEnvVar(self):
   154      """Tests that --gtest_throw_on_failure overrides GTEST_THROW_ON_FAILURE."""
   155  
   156      self.RunAndVerify(env_var_value='0',
   157                        flag_value='0',
   158                        should_fail=False)
   159      self.RunAndVerify(env_var_value='0',
   160                        flag_value='1',
   161                        should_fail=True)
   162      self.RunAndVerify(env_var_value='1',
   163                        flag_value='0',
   164                        should_fail=False)
   165      self.RunAndVerify(env_var_value='1',
   166                        flag_value='1',
   167                        should_fail=True)
   168  
   169  
   170  if __name__ == '__main__':
   171    gtest_test_utils.Main()