3 # Copyright 2009, Google Inc.
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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 from googletest.test 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
77 class ThrowOnFailureTest(gtest_test_utils.TestCase):
78 """Tests the throw-on-failure mode."""
80 def RunAndVerify(self, env_var_value, flag_value, should_fail):
81 """Runs googletest-throw-on-failure-test_ and verifies that it does
82 (or does not) exit with a non-zero code.
85 env_var_value: value of the GTEST_BREAK_ON_FAILURE environment
86 variable; None if the variable should be unset.
87 flag_value: value of the --gtest_break_on_failure flag;
88 None if the flag should not be present.
89 should_fail: True if and only if the program is expected to fail.
92 SetEnvVar(THROW_ON_FAILURE, env_var_value)
94 if env_var_value is None:
95 env_var_value_msg = ' is not set'
97 env_var_value_msg = '=' + env_var_value
99 if flag_value is None:
101 elif flag_value == '0':
102 flag = '--%s=0' % THROW_ON_FAILURE
104 flag = '--%s' % THROW_ON_FAILURE
111 should_or_not = 'should'
113 should_or_not = 'should not'
115 failed = not Run(command)
117 SetEnvVar(THROW_ON_FAILURE, None)
119 msg = ('when %s%s, an assertion failure in "%s" %s cause a non-zero '
121 (THROW_ON_FAILURE, env_var_value_msg, ' '.join(command),
123 self.assert_(failed == should_fail, msg)
125 def testDefaultBehavior(self):
126 """Tests the behavior of the default mode."""
128 self.RunAndVerify(env_var_value=None, flag_value=None, should_fail=False)
130 def testThrowOnFailureEnvVar(self):
131 """Tests using the GTEST_THROW_ON_FAILURE environment variable."""
133 self.RunAndVerify(env_var_value='0',
136 self.RunAndVerify(env_var_value='1',
140 def testThrowOnFailureFlag(self):
141 """Tests using the --gtest_throw_on_failure flag."""
143 self.RunAndVerify(env_var_value=None,
146 self.RunAndVerify(env_var_value=None,
150 def testThrowOnFailureFlagOverridesEnvVar(self):
151 """Tests that --gtest_throw_on_failure overrides GTEST_THROW_ON_FAILURE."""
153 self.RunAndVerify(env_var_value='0',
156 self.RunAndVerify(env_var_value='0',
159 self.RunAndVerify(env_var_value='1',
162 self.RunAndVerify(env_var_value='1',
167 if __name__ == '__main__':
168 gtest_test_utils.Main()