199 lines
6.5 KiB
Python
Executable File
199 lines
6.5 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# Copyright 2006, Google Inc.
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are
|
|
# met:
|
|
#
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above
|
|
# copyright notice, this list of conditions and the following disclaimer
|
|
# in the documentation and/or other materials provided with the
|
|
# distribution.
|
|
# * Neither the name of Google Inc. nor the names of its
|
|
# contributors may be used to endorse or promote products derived from
|
|
# this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
"""Unit test for Google Test's break-on-failure mode.
|
|
|
|
A user can ask Google Test to seg-fault when an assertion fails, using
|
|
either the GTEST_BREAK_ON_FAILURE environment variable or the
|
|
--gtest_break_on_failure flag. This script tests such functionality
|
|
by invoking gtest_break_on_failure_unittest_ (a program written with
|
|
Google Test) with different environments and command line flags.
|
|
"""
|
|
|
|
__author__ = 'wan@google.com (Zhanyong Wan)'
|
|
|
|
import gtest_test_utils
|
|
import os
|
|
import sys
|
|
import unittest
|
|
|
|
|
|
# Constants.
|
|
|
|
# The environment variable for enabling/disabling the break-on-failure mode.
|
|
BREAK_ON_FAILURE_ENV_VAR = 'GTEST_BREAK_ON_FAILURE'
|
|
|
|
# The command line flag for enabling/disabling the break-on-failure mode.
|
|
BREAK_ON_FAILURE_FLAG = 'gtest_break_on_failure'
|
|
|
|
# The environment variable for enabling/disabling the throw-on-failure mode.
|
|
THROW_ON_FAILURE_ENV_VAR = 'GTEST_THROW_ON_FAILURE'
|
|
|
|
# Path to the gtest_break_on_failure_unittest_ program.
|
|
EXE_PATH = gtest_test_utils.GetTestExecutablePath(
|
|
'gtest_break_on_failure_unittest_')
|
|
|
|
|
|
# Utilities.
|
|
|
|
|
|
def SetEnvVar(env_var, value):
|
|
"""Sets an environment variable to a given value; unsets it when the
|
|
given value is None.
|
|
"""
|
|
|
|
if value is not None:
|
|
os.environ[env_var] = value
|
|
elif env_var in os.environ:
|
|
del os.environ[env_var]
|
|
|
|
|
|
def Run(command):
|
|
"""Runs a command; returns 1 if it was killed by a signal, or 0 otherwise."""
|
|
|
|
p = gtest_test_utils.Subprocess(command)
|
|
if p.terminated_by_signal:
|
|
return 1
|
|
else:
|
|
return 0
|
|
|
|
|
|
# The tests.
|
|
|
|
|
|
class GTestBreakOnFailureUnitTest(unittest.TestCase):
|
|
"""Tests using the GTEST_BREAK_ON_FAILURE environment variable or
|
|
the --gtest_break_on_failure flag to turn assertion failures into
|
|
segmentation faults.
|
|
"""
|
|
|
|
def RunAndVerify(self, env_var_value, flag_value, expect_seg_fault):
|
|
"""Runs gtest_break_on_failure_unittest_ and verifies that it does
|
|
(or does not) have a seg-fault.
|
|
|
|
Args:
|
|
env_var_value: value of the GTEST_BREAK_ON_FAILURE environment
|
|
variable; None if the variable should be unset.
|
|
flag_value: value of the --gtest_break_on_failure flag;
|
|
None if the flag should not be present.
|
|
expect_seg_fault: 1 if the program is expected to generate a seg-fault;
|
|
0 otherwise.
|
|
"""
|
|
|
|
SetEnvVar(BREAK_ON_FAILURE_ENV_VAR, env_var_value)
|
|
|
|
if env_var_value is None:
|
|
env_var_value_msg = ' is not set'
|
|
else:
|
|
env_var_value_msg = '=' + env_var_value
|
|
|
|
if flag_value is None:
|
|
flag = ''
|
|
elif flag_value == '0':
|
|
flag = '--%s=0' % BREAK_ON_FAILURE_FLAG
|
|
else:
|
|
flag = '--%s' % BREAK_ON_FAILURE_FLAG
|
|
|
|
command = [EXE_PATH]
|
|
if flag:
|
|
command.append(flag)
|
|
|
|
if expect_seg_fault:
|
|
should_or_not = 'should'
|
|
else:
|
|
should_or_not = 'should not'
|
|
|
|
has_seg_fault = Run(command)
|
|
|
|
SetEnvVar(BREAK_ON_FAILURE_ENV_VAR, None)
|
|
|
|
msg = ('when %s%s, an assertion failure in "%s" %s cause a seg-fault.' %
|
|
(BREAK_ON_FAILURE_ENV_VAR, env_var_value_msg, ' '.join(command),
|
|
should_or_not))
|
|
self.assert_(has_seg_fault == expect_seg_fault, msg)
|
|
|
|
def testDefaultBehavior(self):
|
|
"""Tests the behavior of the default mode."""
|
|
|
|
self.RunAndVerify(env_var_value=None,
|
|
flag_value=None,
|
|
expect_seg_fault=0)
|
|
|
|
def testEnvVar(self):
|
|
"""Tests using the GTEST_BREAK_ON_FAILURE environment variable."""
|
|
|
|
self.RunAndVerify(env_var_value='0',
|
|
flag_value=None,
|
|
expect_seg_fault=0)
|
|
self.RunAndVerify(env_var_value='1',
|
|
flag_value=None,
|
|
expect_seg_fault=1)
|
|
|
|
def testFlag(self):
|
|
"""Tests using the --gtest_break_on_failure flag."""
|
|
|
|
self.RunAndVerify(env_var_value=None,
|
|
flag_value='0',
|
|
expect_seg_fault=0)
|
|
self.RunAndVerify(env_var_value=None,
|
|
flag_value='1',
|
|
expect_seg_fault=1)
|
|
|
|
def testFlagOverridesEnvVar(self):
|
|
"""Tests that the flag overrides the environment variable."""
|
|
|
|
self.RunAndVerify(env_var_value='0',
|
|
flag_value='0',
|
|
expect_seg_fault=0)
|
|
self.RunAndVerify(env_var_value='0',
|
|
flag_value='1',
|
|
expect_seg_fault=1)
|
|
self.RunAndVerify(env_var_value='1',
|
|
flag_value='0',
|
|
expect_seg_fault=0)
|
|
self.RunAndVerify(env_var_value='1',
|
|
flag_value='1',
|
|
expect_seg_fault=1)
|
|
|
|
def testBreakOnFailureOverridesThrowOnFailure(self):
|
|
"""Tests that gtest_break_on_failure overrides gtest_throw_on_failure."""
|
|
|
|
SetEnvVar(THROW_ON_FAILURE_ENV_VAR, '1')
|
|
try:
|
|
self.RunAndVerify(env_var_value=None,
|
|
flag_value='1',
|
|
expect_seg_fault=1)
|
|
finally:
|
|
SetEnvVar(THROW_ON_FAILURE_ENV_VAR, None)
|
|
|
|
if __name__ == '__main__':
|
|
gtest_test_utils.Main()
|