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32 """Tests Google Test's throw-on-failure mode with exceptions disabled.
34 This script invokes googletest-throw-on-failure-test_ (a program written with
35 Google Test) with different environments and command line flags.
39 import gtest_test_utils
44 # The command line flag for enabling/disabling the throw-on-failure mode.
45 THROW_ON_FAILURE = 'gtest_throw_on_failure'
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_')
56 def SetEnvVar(env_var, value):
57 """Sets an environment variable to a given value; unsets it when the
61 env_var = env_var.upper()
63 os.environ[env_var] = value
64 elif env_var in os.environ:
65 del os.environ[env_var]
69 """Runs a command; returns True/False if its exit code is/isn't 0."""
71 print 'Running "%s". . .' % ' '.join(command)
72 p = gtest_test_utils.Subprocess(command)
73 return p.exited and p.exit_code == 0
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."""
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.
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.
93 SetEnvVar(THROW_ON_FAILURE, env_var_value)
95 if env_var_value is None:
96 env_var_value_msg = ' is not set'
98 env_var_value_msg = '=' + env_var_value
100 if flag_value is None:
102 elif flag_value == '0':
103 flag = '--%s=0' % THROW_ON_FAILURE
105 flag = '--%s' % THROW_ON_FAILURE
112 should_or_not = 'should'
114 should_or_not = 'should not'
116 failed = not Run(command)
118 SetEnvVar(THROW_ON_FAILURE, None)
120 msg = ('when %s%s, an assertion failure in "%s" %s cause a non-zero '
122 (THROW_ON_FAILURE, env_var_value_msg, ' '.join(command),
124 self.assert_(failed == should_fail, msg)
126 def testDefaultBehavior(self):
127 """Tests the behavior of the default mode."""
129 self.RunAndVerify(env_var_value=None, flag_value=None, should_fail=False)
131 def testThrowOnFailureEnvVar(self):
132 """Tests using the GTEST_THROW_ON_FAILURE environment variable."""
134 self.RunAndVerify(env_var_value='0',
137 self.RunAndVerify(env_var_value='1',
141 def testThrowOnFailureFlag(self):
142 """Tests using the --gtest_throw_on_failure flag."""
144 self.RunAndVerify(env_var_value=None,
147 self.RunAndVerify(env_var_value=None,
151 def testThrowOnFailureFlagOverridesEnvVar(self):
152 """Tests that --gtest_throw_on_failure overrides GTEST_THROW_ON_FAILURE."""
154 self.RunAndVerify(env_var_value='0',
157 self.RunAndVerify(env_var_value='0',
160 self.RunAndVerify(env_var_value='1',
163 self.RunAndVerify(env_var_value='1',
168 if __name__ == '__main__':
169 gtest_test_utils.Main()