32"""Unit test for Google Test's break-on-failure mode.
34A user can ask Google Test to seg-fault when an assertion fails, using
35either the GTEST_BREAK_ON_FAILURE environment variable or the
36--gtest_break_on_failure flag. This script tests such functionality
37by invoking googletest-break-on-failure-unittest_ (a program written
with
38Google Test)
with different environments
and command line flags.
42import gtest_test_utils
46IS_WINDOWS = os.name == 'nt'
48# The environment variable for enabling/disabling the break-on-failure mode.
49BREAK_ON_FAILURE_ENV_VAR = 'GTEST_BREAK_ON_FAILURE'
51# The command line flag for enabling/disabling the break-on-failure mode.
52BREAK_ON_FAILURE_FLAG = 'gtest_break_on_failure'
54# The environment variable for enabling/disabling the throw-on-failure mode.
55THROW_ON_FAILURE_ENV_VAR = 'GTEST_THROW_ON_FAILURE'
57# The environment variable for enabling/disabling the catch-exceptions mode.
58CATCH_EXCEPTIONS_ENV_VAR = 'GTEST_CATCH_EXCEPTIONS'
60# Path to the googletest-break-on-failure-unittest_ program.
61EXE_PATH = gtest_test_utils.GetTestExecutablePath(
62 'googletest-break-on-failure-unittest_')
65environ = gtest_test_utils.environ
66SetEnvVar = gtest_test_utils.SetEnvVar
73SetEnvVar(gtest_test_utils.PREMATURE_EXIT_FILE_ENV_VAR,
None)
77 """Runs a command; returns 1 if it was killed by a signal, or 0 otherwise."""
80 if p.terminated_by_signal:
90 """Tests using the GTEST_BREAK_ON_FAILURE environment variable or
91 the --gtest_break_on_failure flag to turn assertion failures into
95 def RunAndVerify(self, env_var_value, flag_value, expect_seg_fault):
96 """Runs googletest-break-on-failure-unittest_ and verifies that it does
97 (or does
not) have a seg-fault.
100 env_var_value: value of the GTEST_BREAK_ON_FAILURE environment
101 variable;
None if the variable should be unset.
102 flag_value: value of the --gtest_break_on_failure flag;
103 None if the flag should
not be present.
104 expect_seg_fault: 1
if the program
is expected to generate a seg-fault;
108 SetEnvVar(BREAK_ON_FAILURE_ENV_VAR, env_var_value)
110 if env_var_value
is None:
111 env_var_value_msg =
' is not set'
113 env_var_value_msg =
'=' + env_var_value
115 if flag_value
is None:
117 elif flag_value ==
'0':
118 flag =
'--%s=0' % BREAK_ON_FAILURE_FLAG
120 flag =
'--%s' % BREAK_ON_FAILURE_FLAG
127 should_or_not =
'should'
129 should_or_not =
'should not'
131 has_seg_fault =
Run(command)
133 SetEnvVar(BREAK_ON_FAILURE_ENV_VAR,
None)
135 msg = (
'when %s%s, an assertion failure in "%s" %s cause a seg-fault.' %
136 (BREAK_ON_FAILURE_ENV_VAR, env_var_value_msg,
' '.join(command),
138 self.assert_(has_seg_fault == expect_seg_fault, msg)
141 """Tests the behavior of the default mode."""
148 """Tests using the GTEST_BREAK_ON_FAILURE environment variable."""
158 """Tests using the --gtest_break_on_failure flag."""
168 """Tests that the flag overrides the environment variable."""
184 """Tests that gtest_break_on_failure overrides gtest_throw_on_failure."""
192 SetEnvVar(THROW_ON_FAILURE_ENV_VAR,
None)
196 """Tests that gtest_catch_exceptions doesn't interfere."""
204 SetEnvVar(CATCH_EXCEPTIONS_ENV_VAR,
None)
207if __name__ ==
'__main__':
def RunAndVerify(self, env_var_value, flag_value, expect_seg_fault)
def testDefaultBehavior(self)
def testBreakOnFailureOverridesThrowOnFailure(self)
def testFlagOverridesEnvVar(self)
def testCatchExceptionsDoesNotInterfere(self)