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#!/usr/bin/env python
#
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is The Mozilla Foundation
# Portions created by the Initial Developer are Copyright (C) 2009
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#  Serge Gautherie <sgautherie.bz@free.fr>
#  Ted Mielczarek <ted.mielczarek@gmail.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK ***** */

import re, sys, os, os.path, logging, shutil, signal
from glob import glob
from optparse import OptionParser
from subprocess import Popen, PIPE, STDOUT
from tempfile import mkdtemp

from automationutils import addCommonOptions, checkForCrashes, dumpLeakLog

# Init logging
log = logging.getLogger()
handler = logging.StreamHandler(sys.stdout)
log.setLevel(logging.INFO)
log.addHandler(handler)

def readManifest(manifest):
  """Given a manifest file containing a list of test directories,
  return a list of absolute paths to the directories contained within."""
  manifestdir = os.path.dirname(manifest)
  testdirs = []
  try:
    f = open(manifest, "r")
    for line in f:
      dir = line.rstrip()
      path = os.path.join(manifestdir, dir)
      if os.path.isdir(path):
        testdirs.append(path)
    f.close()
  except:
    pass # just eat exceptions
  return testdirs

def runTests(xpcshell, xrePath=None, symbolsPath=None,
             manifest=None, testdirs=[], testPath=None,
             interactive=False, logfiles=True):
  """Run xpcshell tests.

  |xpcshell|, is the xpcshell executable to use to run the tests.
  |xrePath|, if provided, is the path to the XRE to use.
  |symbolsPath|, if provided is the path to a directory containing
    breakpad symbols for processing crashes in tests.
  |manifest|, if provided, is a file containing a list of
    test directories to run.
  |testdirs|, if provided, is a list of absolute paths of test directories.
    No-manifest only option.
  |testPath|, if provided, indicates a single path and/or test to run.
  |interactive|, if set to True, indicates to provide an xpcshell prompt
    instead of automatically executing the test.
  |logfiles|, if set to False, indicates not to save output to log files.
    Non-interactive only option.
  """

  if not testdirs and not manifest:
    # nothing to test!
    print >>sys.stderr, "Error: No test dirs or test manifest specified!"
    return False

  passCount = 0
  failCount = 0

  testharnessdir = os.path.dirname(os.path.abspath(__file__))
  xpcshell = os.path.abspath(xpcshell)
  # we assume that httpd.js lives in components/ relative to xpcshell
  httpdJSPath = os.path.join(os.path.dirname(xpcshell), "components", "httpd.js").replace("\\", "/");

  env = dict(os.environ)
  # Make assertions fatal
  env["XPCOM_DEBUG_BREAK"] = "stack-and-abort"
  # Don't launch the crash reporter client
  env["MOZ_CRASHREPORTER_NO_REPORT"] = "1"

  if xrePath is None:
    xrePath = os.path.dirname(xpcshell)
  else:
    xrePath = os.path.abspath(xrePath)
  if sys.platform == 'win32':
    env["PATH"] = env["PATH"] + ";" + xrePath
  elif sys.platform in ('os2emx', 'os2knix'):
    os.environ["BEGINLIBPATH"] = xrePath + ";" + env["BEGINLIBPATH"]
    os.environ["LIBPATHSTRICT"] = "T"
  elif sys.platform == 'osx':
    env["DYLD_LIBRARY_PATH"] = xrePath
  else: # unix or linux?
    env["LD_LIBRARY_PATH"] = xrePath

  # xpcsRunArgs: <head.js> function to call to run the test.
  # pStdout, pStderr: Parameter values for later |Popen()| call.
  if interactive:
    xpcsRunArgs = [
      '-e', 'print("To start the test, type |_execute_test();|.");',
      '-i']
    pStdout = None
    pStderr = None
  else:
    xpcsRunArgs = ['-e', '_execute_test();']
    if sys.platform == 'os2emx':
      pStdout = None
    else:
      pStdout = PIPE
    pStderr = STDOUT

  # <head.js> has to be loaded by xpchell: it can't load itself.
  xpcsCmd = [xpcshell, '-g', xrePath, '-j', '-s'] + \
            ['-e', 'const _HTTPD_JS_PATH = "%s";' % httpdJSPath,
             '-f', os.path.join(testharnessdir, 'head.js')]

  # |testPath| will be the optional path only, or |None|.
  # |singleFile| will be the optional test only, or |None|.
  singleFile = None
  if testPath:
    if testPath.endswith('.js'):
      # Split into path and file.
      if testPath.find('/') == -1:
        # Test only.
        singleFile = testPath
        testPath = None
      else:
        # Both path and test.
        # Reuse |testPath| temporarily.
        testPath = testPath.rsplit('/', 1)
        singleFile = testPath[1]
        testPath = testPath[0]
    else:
      # Path only.
      # Simply remove optional ending separator.
      testPath = testPath.rstrip("/")

  # Override testdirs.
  if manifest is not None:
    testdirs = readManifest(os.path.abspath(manifest))

  # Process each test directory individually.
  for testdir in testdirs:
    if testPath and not testdir.endswith(testPath):
      continue

    testdir = os.path.abspath(testdir)

    # get the list of head and tail files from the directory
    testHeadFiles = []
    for f in sorted(glob(os.path.join(testdir, "head_*.js"))):
      if os.path.isfile(f):
        testHeadFiles += [f]
    testTailFiles = []
    # Tails are executed in the reverse order, to "match" heads order,
    # as in "h1-h2-h3 then t3-t2-t1".
    for f in reversed(sorted(glob(os.path.join(testdir, "tail_*.js")))):
      if os.path.isfile(f):
        testTailFiles += [f]

    # if a single test file was specified, we only want to execute that test
    testfiles = sorted(glob(os.path.join(testdir, "test_*.js")))
    if singleFile:
      if singleFile in [os.path.basename(x) for x in testfiles]:
        testfiles = [os.path.join(testdir, singleFile)]
      else: # not in this dir? skip it
        continue

    cmdH = ", ".join(['"' + f.replace('\\', '/') + '"'
                       for f in testHeadFiles])
    cmdT = ", ".join(['"' + f.replace('\\', '/') + '"'
                       for f in testTailFiles])
    cmdH = xpcsCmd + \
           ['-e', 'const _HEAD_FILES = [%s];' % cmdH] + \
           ['-e', 'const _TAIL_FILES = [%s];' % cmdT]

    # Now execute each test individually.
    for test in testfiles:
      # The test file will have to be loaded after the head files.
      cmdT = ['-e', 'const _TEST_FILE = ["%s"];' %
                      os.path.join(testdir, test).replace('\\', '/')]

      # create a temp dir that the JS harness can stick a profile in
      profileDir = None
      try:
        profileDir = mkdtemp()
        env["XPCSHELL_TEST_PROFILE_DIR"] = profileDir

        # Enable leaks (only) detection to its own log file.
        leakLogFile = os.path.join(profileDir, "runxpcshelltests_leaks.log")
        env["XPCOM_MEM_LEAK_LOG"] = leakLogFile

        proc = Popen(cmdH + cmdT + xpcsRunArgs,
                     stdout=pStdout, stderr=pStderr, env=env, cwd=testdir)

        # allow user to kill hung subprocess with SIGINT w/o killing this script
        # - don't move this line above Popen, or child will inherit the SIG_IGN
        signal.signal(signal.SIGINT, signal.SIG_IGN)
        # |stderr == None| as |pStderr| was either |None| or redirected to |stdout|.
        stdout, stderr = proc.communicate()
        signal.signal(signal.SIGINT, signal.SIG_DFL)

        if interactive:
          # Not sure what else to do here...
          return True

        if proc.returncode != 0 or (stdout and re.search("^TEST-UNEXPECTED-FAIL", stdout, re.MULTILINE)):
          print """TEST-UNEXPECTED-FAIL | %s | test failed (with xpcshell return code: %d), see following log:
  >>>>>>>
  %s
  <<<<<<<""" % (test, proc.returncode, stdout)
          checkForCrashes(testdir, symbolsPath, testName=test)
          failCount += 1
        else:
          print "TEST-PASS | %s | test passed" % test
          passCount += 1

        dumpLeakLog(leakLogFile, True)

        if logfiles and stdout:
          try:
            f = open(test + ".log", "w")
            f.write(stdout)

            if os.path.exists(leakLogFile):
              leaks = open(leakLogFile, "r")
              f.write(leaks.read())
              leaks.close()
          finally:
            if f:
              f.close()
      finally:
        if profileDir:
          shutil.rmtree(profileDir)

  if passCount == 0 and failCount == 0:
    print "TEST-UNEXPECTED-FAIL | runxpcshelltests.py | No tests run. Did you pass an invalid --test-path?"
    failCount = 1

  print """INFO | Result summary:
INFO | Passed: %d
INFO | Failed: %d""" % (passCount, failCount)

  return failCount == 0

def main():
  """Process command line arguments and call runTests() to do the real work."""
  parser = OptionParser()

  addCommonOptions(parser)
  parser.add_option("--interactive",
                    action="store_true", dest="interactive", default=False,
                    help="don't automatically run tests, drop to an xpcshell prompt")
  parser.add_option("--logfiles",
                    action="store_true", dest="logfiles", default=True,
                    help="create log files (default, only used to override --no-logfiles)")
  parser.add_option("--manifest",
                    type="string", dest="manifest", default=None,
                    help="Manifest of test directories to use")
  parser.add_option("--no-logfiles",
                    action="store_false", dest="logfiles",
                    help="don't create log files")
  parser.add_option("--test-path",
                    type="string", dest="testPath", default=None,
                    help="single path and/or test filename to test")
  options, args = parser.parse_args()

  if len(args) < 2 and options.manifest is None or \
     (len(args) < 1 and options.manifest is not None):
    print >>sys.stderr, """Usage: %s <path to xpcshell> <test dirs>
  or: %s --manifest=test.manifest <path to xpcshell>""" % (sys.argv[0],
                                                           sys.argv[0])
    sys.exit(1)

  if options.interactive and not options.testPath:
    print >>sys.stderr, "Error: You must specify a test filename in interactive mode!"
    sys.exit(1)

  if not runTests(args[0],
                  xrePath=options.xrePath,
                  symbolsPath=options.symbolsPath,
                  manifest=options.manifest,
                  testdirs=args[1:],
                  testPath=options.testPath,
                  interactive=options.interactive,
                  logfiles=options.logfiles):
    sys.exit(1)

if __name__ == '__main__':
  main()