testing/runcppunittests.py
author Wan-Teh Chang <wtc@google.com>
Thu, 05 Jun 2014 07:06:32 -0700
changeset 206065 189492a9a1151073e187dd62440011c8fee2b5fe
parent 197047 b62c590540b0a0b82924413a0f2bcf0022cc8713
child 209560 7cafd3d4f0d7b8e037114b96518dde99665d4a44
permissions -rw-r--r--
Bug 1020695: Update Mozilla to use NSS 3.16.2 Beta 3. Includes fixes for bug 1013088, bug 996237, bug 970539, bug 1016567, bug 485732, bug 334013, bug 959864, bug 1016836, bug 1016811, bug 1018536, bug 996250, bug 1009227, bug 963150.

#!/usr/bin/env python
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import with_statement
import sys, os, tempfile, shutil
from optparse import OptionParser
import mozprocess, mozinfo, mozlog, mozcrash, mozfile
from contextlib import contextmanager

log = mozlog.getLogger('cppunittests')

class CPPUnitTests(object):
    # Time (seconds) to wait for test process to complete
    TEST_PROC_TIMEOUT = 900
    # Time (seconds) in which process will be killed if it produces no output.
    TEST_PROC_NO_OUTPUT_TIMEOUT = 300

    def run_one_test(self, prog, env, symbols_path=None):
        """
        Run a single C++ unit test program.

        Arguments:
        * prog: The path to the test program to run.
        * env: The environment to use for running the program.
        * symbols_path: A path to a directory containing Breakpad-formatted
                        symbol files for producing stack traces on crash.

        Return True if the program exits with a zero status, False otherwise.
        """
        basename = os.path.basename(prog)
        log.info("Running test %s", basename)
        with mozfile.TemporaryDirectory() as tempdir:
            proc = mozprocess.ProcessHandler([prog],
                                             cwd=tempdir,
                                             env=env)
            #TODO: After bug 811320 is fixed, don't let .run() kill the process,
            # instead use a timeout in .wait() and then kill to get a stack.
            proc.run(timeout=CPPUnitTests.TEST_PROC_TIMEOUT,
                     outputTimeout=CPPUnitTests.TEST_PROC_NO_OUTPUT_TIMEOUT)
            proc.wait()
            if proc.timedOut:
                log.testFail("%s | timed out after %d seconds",
                             basename, CPPUnitTests.TEST_PROC_TIMEOUT)
                return False
            if mozcrash.check_for_crashes(tempdir, symbols_path,
                                          test_name=basename):
                log.testFail("%s | test crashed", basename)
                return False
            result = proc.proc.returncode == 0
            if not result:
                log.testFail("%s | test failed with return code %d",
                             basename, proc.proc.returncode)
            return result

    def build_core_environment(self, env = {}):
        """
        Add environment variables likely to be used across all platforms, including remote systems.
        """
        env["MOZILLA_FIVE_HOME"] = self.xre_path
        env["MOZ_XRE_DIR"] = self.xre_path
        #TODO: switch this to just abort once all C++ unit tests have
        # been fixed to enable crash reporting
        env["XPCOM_DEBUG_BREAK"] = "stack-and-abort"
        env["MOZ_CRASHREPORTER_NO_REPORT"] = "1"
        env["MOZ_CRASHREPORTER"] = "1"
        return env

    def build_environment(self):
        """
        Create and return a dictionary of all the appropriate env variables and values.
        On a remote system, we overload this to set different values and are missing things like os.environ and PATH.
        """
        if not os.path.isdir(self.xre_path):
            raise Exception("xre_path does not exist: %s", self.xre_path)
        env = dict(os.environ)
        env = self.build_core_environment(env)
        pathvar = ""
        if mozinfo.os == "linux":
            pathvar = "LD_LIBRARY_PATH"
        elif mozinfo.os == "mac":
            pathvar = "DYLD_LIBRARY_PATH"
        elif mozinfo.os == "win":
            pathvar = "PATH"
        if pathvar:
            if pathvar in env:
                env[pathvar] = "%s%s%s" % (self.xre_path, os.pathsep, env[pathvar])
            else:
                env[pathvar] = self.xre_path

        # Use llvm-symbolizer for ASan if available/required
        llvmsym = os.path.join(self.xre_path, "llvm-symbolizer")
        if os.path.isfile(llvmsym):
          env["ASAN_SYMBOLIZER_PATH"] = llvmsym

        return env

    def run_tests(self, programs, xre_path, symbols_path=None):
        """
        Run a set of C++ unit test programs.

        Arguments:
        * programs: An iterable containing paths to test programs.
        * xre_path: A path to a directory containing a XUL Runtime Environment.
        * symbols_path: A path to a directory containing Breakpad-formatted
                        symbol files for producing stack traces on crash.

        Returns True if all test programs exited with a zero status, False
        otherwise.
        """
        self.xre_path = xre_path
        env = self.build_environment()
        pass_count = 0
        fail_count = 0
        for prog in programs:
            single_result = self.run_one_test(prog, env, symbols_path)
            if single_result:
                pass_count += 1
            else:
                fail_count += 1

        log.info("Result summary:")
        log.info("Passed: %d" % pass_count)
        log.info("Failed: %d" % fail_count)
        return fail_count == 0

class CPPUnittestOptions(OptionParser):
    def __init__(self):
        OptionParser.__init__(self)
        self.add_option("--xre-path",
                        action = "store", type = "string", dest = "xre_path",
                        default = None,
                        help = "absolute path to directory containing XRE (probably xulrunner)")
        self.add_option("--symbols-path",
                        action = "store", type = "string", dest = "symbols_path",
                        default = None,
                        help = "absolute path to directory containing breakpad symbols, or the URL of a zip file containing symbols")
        self.add_option("--skip-manifest",
                        action = "store", type = "string", dest = "manifest_file",
                        default = None,
                        help = "absolute path to a manifest file")

def extract_unittests_from_args(args, manifest_file):
    """Extract unittests from args, expanding directories as needed"""
    progs = []

    # Known files commonly packaged with the cppunittests that are not tests
    skipped_progs = set(['.mkdir.done', 'remotecppunittests.py', 'runcppunittests.py', 'runcppunittests.pyc'])

    if manifest_file:
        skipped_progs.add(os.path.basename(manifest_file))
        with open(manifest_file) as f:
            for line in f:
                # strip out comment, if any
                prog = line.split('#')[0]
                if prog:
                    skipped_progs.add(prog.strip())

    for p in args:
        if os.path.isdir(p):
            progs.extend([os.path.abspath(os.path.join(p, x)) for x in os.listdir(p) if not x in skipped_progs])
        elif p not in skipped_progs:
            progs.append(os.path.abspath(p))

    return progs

def main():
    parser = CPPUnittestOptions()
    options, args = parser.parse_args()
    if not args:
        print >>sys.stderr, """Usage: %s <test binary> [<test binary>...]""" % sys.argv[0]
        sys.exit(1)
    if not options.xre_path:
        print >>sys.stderr, """Error: --xre-path is required"""
        sys.exit(1)
        
    progs = extract_unittests_from_args(args, options.manifest_file)
    options.xre_path = os.path.abspath(options.xre_path)
    tester = CPPUnitTests()
    try:
        result = tester.run_tests(progs, options.xre_path, options.symbols_path)
    except Exception, e:
        log.error(str(e))
        result = False
    sys.exit(0 if result else 1)

if __name__ == '__main__':
    main()