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#!/usr/bin/env python
# Copyright (c) 2009 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Generate and process code coverage.
TODO(jrg): rename this from coverage_posix.py to coverage_all.py!
Written for and tested on Mac, Linux, and Windows. To use this script
to generate coverage numbers, please run from within a gyp-generated
project.
All platforms, to set up coverage:
cd ...../chromium ; src/tools/gyp/gyp_dogfood -Dcoverage=1 src/build/all.gyp
Run coverage on...
Mac:
( cd src/chrome ; xcodebuild -configuration Debug -target coverage )
Linux:
( cd src/chrome ; hammer coverage )
# In particular, don't try and run 'coverage' from src/build
--directory=DIR: specify directory that contains gcda files, and where
a "coverage" directory will be created containing the output html.
Example name: ..../chromium/src/xcodebuild/Debug
--genhtml: generate html output. If not specified only lcov is generated.
--all_unittests: if present, run all files named *_unittests that we
can find.
--fast_test: make the tests run real fast (just for testing)
--strict: if a test fails, we continue happily. --strict will cause
us to die immediately.
Strings after all options are considered tests to run. Test names
have all text before a ':' stripped to help with gyp compatibility.
For example, ../base/base.gyp:base_unittests is interpreted as a test
named "base_unittests".
"""
import glob
import logging
import optparse
import os
import shutil
import subprocess
import sys
class Coverage(object):
"""Doitall class for code coverage."""
def __init__(self, directory, options, args):
super(Coverage, self).__init__()
logging.basicConfig(level=logging.DEBUG)
self.directory = directory
self.options = options
self.args = args
self.directory_parent = os.path.dirname(self.directory)
self.output_directory = os.path.join(self.directory, 'coverage')
if not os.path.exists(self.output_directory):
os.mkdir(self.output_directory)
# The "final" lcov-format file
self.coverage_info_file = os.path.join(self.directory, 'coverage.info')
# If needed, an intermediate VSTS-format file
self.vsts_output = os.path.join(self.directory, 'coverage.vsts')
# Needed for Windows.
self.src_root = options.src_root
self.FindPrograms()
self.ConfirmPlatformAndPaths()
self.tests = []
def FindInPath(self, program):
"""Find program in our path. Return abs path to it, or None."""
if not 'PATH' in os.environ:
logging.fatal('No PATH environment variable?')
sys.exit(1)
paths = os.environ['PATH'].split(os.pathsep)
for path in paths:
fullpath = os.path.join(path, program)
if os.path.exists(fullpath):
return fullpath
return None
def FindPrograms(self):
"""Find programs we may want to run."""
if self.IsPosix():
self.lcov_directory = os.path.join(sys.path[0],
'../../third_party/lcov/bin')
self.lcov = os.path.join(self.lcov_directory, 'lcov')
self.mcov = os.path.join(self.lcov_directory, 'mcov')
self.genhtml = os.path.join(self.lcov_directory, 'genhtml')
self.programs = [self.lcov, self.mcov, self.genhtml]
else:
commands = ['vsperfcmd.exe', 'vsinstr.exe', 'coverage_analyzer.exe']
self.perf = self.FindInPath('vsperfcmd.exe')
self.instrument = self.FindInPath('vsinstr.exe')
self.analyzer = self.FindInPath('coverage_analyzer.exe')
if not self.perf or not self.instrument or not self.analyzer:
logging.fatal('Could not find Win performance commands.')
logging.fatal('Commands needed in PATH: ' + str(commands))
sys.exit(1)
self.programs = [self.perf, self.instrument, self.analyzer]
def FindTests(self):
"""Find unit tests to run; set self.tests to this list.
Assume all non-option items in the arg list are tests to be run.
"""
# Small tests: can be run in the "chromium" directory.
# If asked, run all we can find.
if self.options.all_unittests:
self.tests += glob.glob(os.path.join(self.directory, '*_unittests'))
# If told explicit tests, run those (after stripping the name as
# appropriate)
for testname in self.args:
if ':' in testname:
self.tests += [os.path.join(self.directory, testname.split(':')[1])]
else:
self.tests += [os.path.join(self.directory, testname)]
# Medium tests?
# Not sure all of these work yet (e.g. page_cycler_tests)
# self.tests += glob.glob(os.path.join(self.directory, '*_tests'))
# If needed, append .exe to tests since vsinstr.exe likes it that
# way.
if self.IsWindows():
for ind in range(len(self.tests)):
test = self.tests[ind]
test_exe = test + '.exe'
if not test.endswith('.exe') and os.path.exists(test_exe):
self.tests[ind] = test_exe
# Temporarily make Windows quick for bringup by filtering
# out all except base_unittests. Easier than a chrome.cyp change.
# TODO(jrg): remove this
if self.IsWindows():
t2 = []
for test in self.tests:
if 'base_unittests' in test:
t2.append(test)
self.tests = t2
def ConfirmPlatformAndPaths(self):
"""Confirm OS and paths (e.g. lcov)."""
for program in self.programs:
if not os.path.exists(program):
logging.fatal('Program missing: ' + program)
sys.exit(1)
def Run(self, cmdlist, ignore_error=False, ignore_retcode=None,
explanation=None):
"""Run the command list; exit fatally on error."""
logging.info('Running ' + str(cmdlist))
retcode = subprocess.call(cmdlist)
if retcode:
if ignore_error or retcode == ignore_retcode:
logging.warning('COVERAGE: %s unhappy but errors ignored %s' %
(str(cmdlist), explanation or ''))
else:
logging.fatal('COVERAGE: %s failed; return code: %d' %
(str(cmdlist), retcode))
sys.exit(retcode)
def IsPosix(self):
"""Return True if we are POSIX."""
return self.IsMac() or self.IsLinux()
def IsMac(self):
return sys.platform == 'darwin'
def IsLinux(self):
return sys.platform == 'linux2'
def IsWindows(self):
"""Return True if we are Windows."""
return sys.platform in ('win32', 'cygwin')
def ClearData(self):
"""Clear old gcda files"""
if not self.IsPosix():
return
subprocess.call([self.lcov,
'--directory', self.directory_parent,
'--zerocounters'])
shutil.rmtree(os.path.join(self.directory, 'coverage'))
def BeforeRunTests(self):
"""Do things before running tests."""
if not self.IsWindows():
return
# Stop old counters if needed
cmdlist = [self.perf, '-shutdown']
self.Run(cmdlist, ignore_error=True)
# Instrument binaries
for fulltest in self.tests:
if os.path.exists(fulltest):
cmdlist = [self.instrument, '/COVERAGE', fulltest]
self.Run(cmdlist, ignore_retcode=4,
explanation='OK with a multiple-instrument')
# Start new counters
cmdlist = [self.perf, '-start:coverage', '-output:' + self.vsts_output]
self.Run(cmdlist)
def RunTests(self):
"""Run all unit tests."""
for fulltest in self.tests:
if not os.path.exists(fulltest):
logging.fatal(fulltest + ' does not exist')
if self.options.strict:
sys.exit(2)
# TODO(jrg): add timeout?
print >>sys.stderr, 'Running test: ' + fulltest
cmdlist = [fulltest, '--gtest_print_time']
# If asked, make this REAL fast for testing.
if self.options.fast_test:
# cmdlist.append('--gtest_filter=RenderWidgetHost*')
cmdlist.append('--gtest_filter=CommandLine*')
retcode = subprocess.call(cmdlist)
if retcode:
logging.fatal('COVERAGE: test %s failed; return code: %d' %
(fulltest, retcode))
if self.options.strict:
sys.exit(retcode)
def AfterRunTests(self):
"""Do things right after running tests."""
if not self.IsWindows():
return
# Stop counters
cmdlist = [self.perf, '-shutdown']
self.Run(cmdlist)
full_output = self.vsts_output + '.coverage'
shutil.move(full_output, self.vsts_output)
def GenerateLcovPosix(self):
"""Convert profile data to lcov."""
command = [self.mcov,
'--directory', self.directory_parent,
'--output', self.coverage_info_file]
print >>sys.stderr, 'Assembly command: ' + ' '.join(command)
retcode = subprocess.call(command)
if retcode:
logging.fatal('COVERAGE: %s failed; return code: %d' %
(command[0], retcode))
if self.options.strict:
sys.exit(retcode)
def GenerateLcovWindows(self):
"""Convert VSTS format to lcov."""
lcov_file = self.vsts_output + '.lcov'
if os.path.exists(lcov_file):
os.remove(lcov_file)
# generates the file (self.vsts_output + ".lcov")
cmdlist = [self.analyzer,
'-sym_path=' + self.directory,
'-src_root=' + self.src_root,
self.vsts_output]
self.Run(cmdlist)
if not os.path.exists(lcov_file):
logging.fatal('Output file %s not created' % lcov_file)
sys.exit(1)
# So we name it appropriately
if os.path.exists(self.coverage_info_file):
os.remove(self.coverage_info_file)
logging.info('Renaming LCOV file to %s to be consistent' %
self.coverage_info_file)
shutil.move(self.vsts_output + '.lcov', self.coverage_info_file)
def GenerateLcov(self):
if self.IsPosix():
self.GenerateLcovPosix()
else:
self.GenerateLcovWindows()
def GenerateHtml(self):
"""Convert lcov to html."""
# TODO(jrg): This isn't happy when run with unit_tests since V8 has a
# different "base" so V8 includes can't be found in ".". Fix.
command = [self.genhtml,
self.coverage_info_file,
'--output-directory',
self.output_directory]
print >>sys.stderr, 'html generation command: ' + ' '.join(command)
retcode = subprocess.call(command)
if retcode:
logging.fatal('COVERAGE: %s failed; return code: %d' %
(command[0], retcode))
if self.options.strict:
sys.exit(retcode)
def main():
# Print out the args to help someone do it by hand if needed
print >>sys.stderr, sys.argv
parser = optparse.OptionParser()
parser.add_option('-d',
'--directory',
dest='directory',
default=None,
help='Directory of unit test files')
parser.add_option('-a',
'--all_unittests',
dest='all_unittests',
default=False,
help='Run all tests we can find (*_unittests)')
parser.add_option('-g',
'--genhtml',
dest='genhtml',
default=False,
help='Generate html from lcov output')
parser.add_option('-f',
'--fast_test',
dest='fast_test',
default=False,
help='Make the tests run REAL fast by doing little.')
parser.add_option('-s',
'--strict',
dest='strict',
default=False,
help='Be strict and die on test failure.')
parser.add_option('-S',
'--src_root',
dest='src_root',
default='.',
help='Source root (only used on Windows)')
(options, args) = parser.parse_args()
if not options.directory:
parser.error('Directory not specified')
coverage = Coverage(options.directory, options, args)
coverage.ClearData()
coverage.FindTests()
coverage.BeforeRunTests()
coverage.RunTests()
coverage.AfterRunTests()
coverage.GenerateLcov()
if options.genhtml:
coverage.GenerateHtml()
return 0
if __name__ == '__main__':
sys.exit(main())
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