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