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#!/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 --gtest_list_tests flag.
A user can ask Google Test to list all tests by specifying the
--gtest_list_tests flag. This script tests such functionality
by invoking gtest_list_tests_unittest_ (a program written with
Google Test) the command line flags.
"""
__author__ = 'phanna@google.com (Patrick Hanna)'
import gtest_test_utils
import os
import re
import sys
import unittest
# Constants.
# The command line flag for enabling/disabling listing all tests.
LIST_TESTS_FLAG = 'gtest_list_tests'
# Path to the gtest_list_tests_unittest_ program.
EXE_PATH = gtest_test_utils.GetTestExecutablePath('gtest_list_tests_unittest_')
# The expected output when running gtest_list_tests_unittest_ with
# --gtest_list_tests
EXPECTED_OUTPUT = """FooDeathTest.
Test1
Foo.
Bar1
Bar2
Bar3
Abc.
Xyz
Def
FooBar.
Baz
FooTest.
Test1
Test2
Test3
"""
# Utilities.
def Run(command):
"""Runs a command and returns the list of tests printed.
"""
stdout_file = os.popen(command, "r")
output = stdout_file.read()
stdout_file.close()
return output
# The unit test.
class GTestListTestsUnitTest(unittest.TestCase):
"""Tests using the --gtest_list_tests flag to list all tests.
"""
def RunAndVerify(self, flag_value, expected_output, other_flag):
"""Runs gtest_list_tests_unittest_ and verifies that it prints
the correct tests.
Args:
flag_value: value of the --gtest_list_tests flag;
None if the flag should not be present.
expected_output: the expected output after running command;
other_flag: a different flag to be passed to command
along with gtest_list_tests;
None if the flag should not be present.
"""
if flag_value is None:
flag = ''
flag_expression = "not set"
elif flag_value == '0':
flag = ' --%s=0' % LIST_TESTS_FLAG
flag_expression = "0"
else:
flag = ' --%s' % LIST_TESTS_FLAG
flag_expression = "1"
command = EXE_PATH + flag
if other_flag is not None:
command += " " + other_flag
output = Run(command)
msg = ('when %s is %s, the output of "%s" is "%s".' %
(LIST_TESTS_FLAG, flag_expression, command, output))
if expected_output is not None:
self.assert_(output == expected_output, msg)
else:
self.assert_(output != EXPECTED_OUTPUT, msg)
def testDefaultBehavior(self):
"""Tests the behavior of the default mode."""
self.RunAndVerify(flag_value=None,
expected_output=None,
other_flag=None)
def testFlag(self):
"""Tests using the --gtest_list_tests flag."""
self.RunAndVerify(flag_value='0',
expected_output=None,
other_flag=None)
self.RunAndVerify(flag_value='1',
expected_output=EXPECTED_OUTPUT,
other_flag=None)
def testOverrideOtherFlags(self):
"""Tests that --gtest_list_tests overrides all other flags."""
self.RunAndVerify(flag_value="1",
expected_output=EXPECTED_OUTPUT,
other_flag="--gtest_filter=*")
self.RunAndVerify(flag_value="1",
expected_output=EXPECTED_OUTPUT,
other_flag="--gtest_break_on_failure")
if __name__ == '__main__':
gtest_test_utils.Main()
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