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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 utilities for Google C++ Mocking Framework."""
__author__ = 'wan@google.com (Zhanyong Wan)'
import os
import sys
# Determines path to gtest_test_utils and imports it.
SCRIPT_DIR = os.path.dirname(__file__) or '.'
# isdir resolves symbolic links.
gtest_tests_util_dir = os.path.join(SCRIPT_DIR, '../gtest/test')
if os.path.isdir(gtest_tests_util_dir):
GTEST_TESTS_UTIL_DIR = gtest_tests_util_dir
else:
GTEST_TESTS_UTIL_DIR = os.path.join(SCRIPT_DIR, '../../gtest/test')
sys.path.append(GTEST_TESTS_UTIL_DIR)
import gtest_test_utils # pylint: disable-msg=C6204
# Initially maps a flag to its default value. After
# _ParseAndStripGMockFlags() is called, maps a flag to its actual
# value.
_flag_map = {'gmock_source_dir': os.path.dirname(sys.argv[0]),
'gmock_build_dir': os.path.dirname(sys.argv[0])}
_gmock_flags_are_parsed = False
def _ParseAndStripGMockFlags(argv):
"""Parses and strips Google Test flags from argv. This is idempotent."""
global _gmock_flags_are_parsed
if _gmock_flags_are_parsed:
return
_gmock_flags_are_parsed = True
for flag in _flag_map:
# The environment variable overrides the default value.
if flag.upper() in os.environ:
_flag_map[flag] = os.environ[flag.upper()]
# The command line flag overrides the environment variable.
i = 1 # Skips the program name.
while i < len(argv):
prefix = '--' + flag + '='
if argv[i].startswith(prefix):
_flag_map[flag] = argv[i][len(prefix):]
del argv[i]
break
else:
# We don't increment i in case we just found a --gmock_* flag
# and removed it from argv.
i += 1
def GetFlag(flag):
"""Returns the value of the given flag."""
# In case GetFlag() is called before Main(), we always call
# _ParseAndStripGMockFlags() here to make sure the --gmock_* flags
# are parsed.
_ParseAndStripGMockFlags(sys.argv)
return _flag_map[flag]
def GetSourceDir():
"""Returns the absolute path of the directory where the .py files are."""
return os.path.abspath(GetFlag('gmock_source_dir'))
def GetBuildDir():
"""Returns the absolute path of the directory where the test binaries are."""
return os.path.abspath(GetFlag('gmock_build_dir'))
def GetTestExecutablePath(executable_name):
"""Returns the absolute path of the test binary given its name.
The function will print a message and abort the program if the resulting file
doesn't exist.
Args:
executable_name: name of the test binary that the test script runs.
Returns:
The absolute path of the test binary.
"""
return gtest_test_utils.GetTestExecutablePath(executable_name, GetBuildDir())
def GetExitStatus(exit_code):
"""Returns the argument to exit(), or -1 if exit() wasn't called.
Args:
exit_code: the result value of os.system(command).
"""
if os.name == 'nt':
# On Windows, os.WEXITSTATUS() doesn't work and os.system() returns
# the argument to exit() directly.
return exit_code
else:
# On Unix, os.WEXITSTATUS() must be used to extract the exit status
# from the result of os.system().
if os.WIFEXITED(exit_code):
return os.WEXITSTATUS(exit_code)
else:
return -1
# Suppresses the "Invalid const name" lint complaint
# pylint: disable-msg=C6409
# Exposes Subprocess from gtest_test_utils.
Subprocess = gtest_test_utils.Subprocess
# Exposes TestCase from gtest_test_utils.
TestCase = gtest_test_utils.TestCase
# pylint: enable-msg=C6409
def Main():
"""Runs the unit test."""
# We must call _ParseAndStripGMockFlags() before calling
# gtest_test_utils.Main(). Otherwise unittest.main it calls will be
# confused by the --gmock_* flags.
_ParseAndStripGMockFlags(sys.argv)
gtest_test_utils.Main()
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