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googletest/test/run_tests_util.py

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# Copyright 2008 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.
"""Provides facilities for running SCons-built Google Test/Mock tests."""
import optparse
import os
import re
import sets
import sys
try:
# subrocess module is a preferable way to invoke subprocesses but it may
# not be available on MacOS X 10.4.
# Suppresses the 'Import not at the top of the file' lint complaint.
# pylint: disable-msg=C6204
import subprocess
except ImportError:
subprocess = None
HELP_MSG = """Runs the specified tests for %(proj)s.
SYNOPSIS
run_tests.py [OPTION]... [BUILD_DIR]... [TEST]...
DESCRIPTION
Runs the specified tests (either binary or Python), and prints a
summary of the results. BUILD_DIRS will be used to search for the
binaries. If no TESTs are specified, all binary tests found in
BUILD_DIRs and all Python tests found in the directory test/ (in the
%(proj)s root) are run.
TEST is a name of either a binary or a Python test. A binary test is
an executable file named *_test or *_unittest (with the .exe
extension on Windows) A Python test is a script named *_test.py or
*_unittest.py.
OPTIONS
-h, --help
Print this help message.
-c CONFIGURATIONS
Specify build directories via build configurations.
CONFIGURATIONS is either a comma-separated list of build
configurations or 'all'. Each configuration is equivalent to
adding 'scons/build/<configuration>/%(proj)s/scons' to BUILD_DIRs.
Specifying -c=all is equivalent to providing all directories
listed in KNOWN BUILD DIRECTORIES section below.
-a
Equivalent to -c=all
-b
Equivalent to -c=all with the exception that the script will not
fail if some of the KNOWN BUILD DIRECTORIES do not exists; the
script will simply not run the tests there. 'b' stands for
'built directories'.
RETURN VALUE
Returns 0 if all tests are successful; otherwise returns 1.
EXAMPLES
run_tests.py
Runs all tests for the default build configuration.
run_tests.py -a
Runs all tests with binaries in KNOWN BUILD DIRECTORIES.
run_tests.py -b
Runs all tests in KNOWN BUILD DIRECTORIES that have been
built.
run_tests.py foo/
Runs all tests in the foo/ directory and all Python tests in
the directory test. The Python tests are instructed to look
for binaries in foo/.
run_tests.py bar_test.exe test/baz_test.exe foo/ bar/
Runs foo/bar_test.exe, bar/bar_test.exe, foo/baz_test.exe, and
bar/baz_test.exe.
run_tests.py foo bar test/foo_test.py
Runs test/foo_test.py twice instructing it to look for its
test binaries in the directories foo and bar,
correspondingly.
KNOWN BUILD DIRECTORIES
run_tests.py knows about directories where the SCons build script
deposits its products. These are the directories where run_tests.py
will be looking for its binaries. Currently, %(proj)s's SConstruct file
defines them as follows (the default build directory is the first one
listed in each group):
On Windows:
<%(proj)s root>/scons/build/win-dbg8/%(proj)s/scons/
<%(proj)s root>/scons/build/win-opt8/%(proj)s/scons/
On Mac:
<%(proj)s root>/scons/build/mac-dbg/%(proj)s/scons/
<%(proj)s root>/scons/build/mac-opt/%(proj)s/scons/
On other platforms:
<%(proj)s root>/scons/build/dbg/%(proj)s/scons/
<%(proj)s root>/scons/build/opt/%(proj)s/scons/"""
IS_WINDOWS = os.name == 'nt'
IS_MAC = os.name == 'posix' and os.uname()[0] == 'Darwin'
IS_CYGWIN = os.name == 'posix' and 'CYGWIN' in os.uname()[0]
# Definition of CONFIGS must match that of the build directory names in the
# SConstruct script. The first list item is the default build configuration.
if IS_WINDOWS:
CONFIGS = ('win-dbg8', 'win-opt8')
elif IS_MAC:
CONFIGS = ('mac-dbg', 'mac-opt')
else:
CONFIGS = ('dbg', 'opt')
if IS_WINDOWS or IS_CYGWIN:
PYTHON_TEST_REGEX = re.compile(r'_(unit)?test\.py$', re.IGNORECASE)
BINARY_TEST_REGEX = re.compile(r'_(unit)?test(\.exe)?$', re.IGNORECASE)
BINARY_TEST_SEARCH_REGEX = re.compile(r'_(unit)?test\.exe$', re.IGNORECASE)
else:
PYTHON_TEST_REGEX = re.compile(r'_(unit)?test\.py$')
BINARY_TEST_REGEX = re.compile(r'_(unit)?test$')
BINARY_TEST_SEARCH_REGEX = BINARY_TEST_REGEX
def _GetGtestBuildDir(injected_os, script_dir, config):
"""Calculates path to the Google Test SCons build directory."""
return injected_os.path.normpath(injected_os.path.join(script_dir,
'scons/build',
config,
'gtest/scons'))
def _GetConfigFromBuildDir(build_dir):
"""Extracts the configuration name from the build directory."""
# We don't want to depend on build_dir containing the correct path
# separators.
m = re.match(r'.*[\\/]([^\\/]+)[\\/][^\\/]+[\\/]scons[\\/]?$', build_dir)
if m:
return m.group(1)
else:
print >>sys.stderr, ('%s is an invalid build directory that does not '
'correspond to any configuration.' % (build_dir,))
return ''
# All paths in this script are either absolute or relative to the current
# working directory, unless otherwise specified.
class TestRunner(object):
"""Provides facilities for running Python and binary tests for Google Test."""
def __init__(self,
script_dir,
build_dir_var_name='GTEST_BUILD_DIR',
injected_os=os,
injected_subprocess=subprocess,
injected_build_dir_finder=_GetGtestBuildDir):
"""Initializes a TestRunner instance.
Args:
script_dir: File path to the calling script.
build_dir_var_name: Name of the env variable used to pass the
the build directory path to the invoked
tests.
injected_os: standard os module or a mock/stub for
testing.
injected_subprocess: standard subprocess module or a mock/stub
for testing
injected_build_dir_finder: function that determines the path to
the build directory.
"""
self.os = injected_os
self.subprocess = injected_subprocess
self.build_dir_finder = injected_build_dir_finder
self.build_dir_var_name = build_dir_var_name
self.script_dir = script_dir
def _GetBuildDirForConfig(self, config):
"""Returns the build directory for a given configuration."""
return self.build_dir_finder(self.os, self.script_dir, config)
def _Run(self, args):
"""Runs the executable with given args (args[0] is the executable name).
Args:
args: Command line arguments for the process.
Returns:
Process's exit code if it exits normally, or -signal if the process is
killed by a signal.
"""
if self.subprocess:
return self.subprocess.Popen(args).wait()
else:
return self.os.spawnv(self.os.P_WAIT, args[0], args)
def _RunBinaryTest(self, test):
"""Runs the binary test given its path.
Args:
test: Path to the test binary.
Returns:
Process's exit code if it exits normally, or -signal if the process is
killed by a signal.
"""
return self._Run([test])
def _RunPythonTest(self, test, build_dir):
"""Runs the Python test script with the specified build directory.
Args:
test: Path to the test's Python script.
build_dir: Path to the directory where the test binary is to be found.
Returns:
Process's exit code if it exits normally, or -signal if the process is
killed by a signal.
"""
old_build_dir = self.os.environ.get(self.build_dir_var_name)
try:
self.os.environ[self.build_dir_var_name] = build_dir
# If this script is run on a Windows machine that has no association
# between the .py extension and a python interpreter, simply passing
# the script name into subprocess.Popen/os.spawn will not work.
print 'Running %s . . .' % (test,)
return self._Run([sys.executable, test])
finally:
if old_build_dir is None:
del self.os.environ[self.build_dir_var_name]
else:
self.os.environ[self.build_dir_var_name] = old_build_dir
def _FindFilesByRegex(self, directory, regex):
"""Returns files in a directory whose names match a regular expression.
Args:
directory: Path to the directory to search for files.
regex: Regular expression to filter file names.
Returns:
The list of the paths to the files in the directory.
"""
return [self.os.path.join(directory, file_name)
for file_name in self.os.listdir(directory)
if re.search(regex, file_name)]
# TODO(vladl@google.com): Implement parsing of scons/SConscript to run all
# tests defined there when no tests are specified.
# TODO(vladl@google.com): Update the docstring after the code is changed to
# try to test all builds defined in scons/SConscript.
def GetTestsToRun(self,
args,
named_configurations,
built_configurations,
available_configurations=CONFIGS,
python_tests_to_skip=None):
"""Determines what tests should be run.
Args:
args: The list of non-option arguments from the command line.
named_configurations: The list of configurations specified via -c or -a.
built_configurations: True if -b has been specified.
available_configurations: a list of configurations available on the
current platform, injectable for testing.
python_tests_to_skip: a collection of (configuration, python test name)s
that need to be skipped.
Returns:
A tuple with 2 elements: the list of Python tests to run and the list of
binary tests to run.
"""
if named_configurations == 'all':
named_configurations = ','.join(available_configurations)
normalized_args = [self.os.path.normpath(arg) for arg in args]
# A final list of build directories which will be searched for the test
# binaries. First, add directories specified directly on the command
# line.
build_dirs = filter(self.os.path.isdir, normalized_args)
# Adds build directories specified via their build configurations using
# the -c or -a options.
if named_configurations:
build_dirs += [self._GetBuildDirForConfig(config)
for config in named_configurations.split(',')]
# Adds KNOWN BUILD DIRECTORIES if -b is specified.
if built_configurations:
build_dirs += [self._GetBuildDirForConfig(config)
for config in available_configurations
if self.os.path.isdir(self._GetBuildDirForConfig(config))]
# If no directories were specified either via -a, -b, -c, or directly, use
# the default configuration.
elif not build_dirs:
build_dirs = [self._GetBuildDirForConfig(available_configurations[0])]
# Makes sure there are no duplications.
build_dirs = sets.Set(build_dirs)
errors_found = False
listed_python_tests = [] # All Python tests listed on the command line.
listed_binary_tests = [] # All binary tests listed on the command line.
test_dir = self.os.path.normpath(self.os.path.join(self.script_dir, 'test'))
# Sifts through non-directory arguments fishing for any Python or binary
# tests and detecting errors.
for argument in sets.Set(normalized_args) - build_dirs:
if re.search(PYTHON_TEST_REGEX, argument):
python_path = self.os.path.join(test_dir,
self.os.path.basename(argument))
if self.os.path.isfile(python_path):
listed_python_tests.append(python_path)
else:
sys.stderr.write('Unable to find Python test %s' % argument)
errors_found = True
elif re.search(BINARY_TEST_REGEX, argument):
# This script also accepts binary test names prefixed with test/ for
# the convenience of typing them (can use path completions in the
# shell). Strips test/ prefix from the binary test names.
listed_binary_tests.append(self.os.path.basename(argument))
else:
sys.stderr.write('%s is neither test nor build directory' % argument)
errors_found = True
if errors_found:
return None
user_has_listed_tests = listed_python_tests or listed_binary_tests
if user_has_listed_tests:
selected_python_tests = listed_python_tests
else:
selected_python_tests = self._FindFilesByRegex(test_dir,
PYTHON_TEST_REGEX)
# TODO(vladl@google.com): skip unbuilt Python tests when -b is specified.
python_test_pairs = []
for directory in build_dirs:
for test in selected_python_tests:
config = _GetConfigFromBuildDir(directory)
file_name = os.path.basename(test)
if python_tests_to_skip and (config, file_name) in python_tests_to_skip:
print ('NOTE: %s is skipped for configuration %s, as it does not '
'work there.' % (file_name, config))
else:
python_test_pairs.append((directory, test))
binary_test_pairs = []
for directory in build_dirs:
if user_has_listed_tests:
binary_test_pairs.extend(
[(directory, self.os.path.join(directory, test))
for test in listed_binary_tests])
else:
tests = self._FindFilesByRegex(directory, BINARY_TEST_SEARCH_REGEX)
binary_test_pairs.extend([(directory, test) for test in tests])
return (python_test_pairs, binary_test_pairs)
def RunTests(self, python_tests, binary_tests):
"""Runs Python and binary tests and reports results to the standard output.
Args:
python_tests: List of Python tests to run in the form of tuples
(build directory, Python test script).
binary_tests: List of binary tests to run in the form of tuples
(build directory, binary file).
Returns:
The exit code the program should pass into sys.exit().
"""
if python_tests or binary_tests:
results = []
for directory, test in python_tests:
results.append((directory,
test,
self._RunPythonTest(test, directory) == 0))
for directory, test in binary_tests:
results.append((directory,
self.os.path.basename(test),
self._RunBinaryTest(test) == 0))
failed = [(directory, test)
for (directory, test, success) in results
if not success]
print
print '%d tests run.' % len(results)
if failed:
print 'The following %d tests failed:' % len(failed)
for (directory, test) in failed:
print '%s in %s' % (test, directory)
return 1
else:
print 'All tests passed!'
else: # No tests defined
print 'Nothing to test - no tests specified!'
return 0
def ParseArgs(project_name, argv=None, help_callback=None):
"""Parses the options run_tests.py uses."""
# Suppresses lint warning on unused arguments. These arguments are
# required by optparse, even though they are unused.
# pylint: disable-msg=W0613
def PrintHelp(option, opt, value, parser):
print HELP_MSG % {'proj': project_name}
sys.exit(1)
parser = optparse.OptionParser()
parser.add_option('-c',
action='store',
dest='configurations',
default=None)
parser.add_option('-a',
action='store_const',
dest='configurations',
default=None,
const='all')
parser.add_option('-b',
action='store_const',
dest='built_configurations',
default=False,
const=True)
# Replaces the built-in help with ours.
parser.remove_option('-h')
parser.add_option('-h', '--help',
action='callback',
callback=help_callback or PrintHelp)
return parser.parse_args(argv)