def test_removePIDErrors(self):
     """
     Calling L{UnixApplicationRunner.removePID} with a non-existent filename logs
     an OSError.
     """
     runner = UnixApplicationRunner({})
     runner.removePID("fakepid")
     errors = self.flushLoggedErrors(OSError)
     self.assertEquals(len(errors), 1)
     self.assertEquals(errors[0].value.errno, errno.ENOENT)

 def test_removePID(self):
     """
     L{UnixApplicationRunner.removePID} deletes the file the name of
     which is passed to it.
     """
     runner = UnixApplicationRunner({})
     path = self.mktemp()
     os.makedirs(path)
     pidfile = os.path.join(path, "foo.pid")
     file(pidfile, "w").close()
     runner.removePID(pidfile)
     self.assertFalse(os.path.exists(pidfile))

    def test_setupEnvironment(self):
        """
        L{UnixApplicationRunner.startApplication} calls
        L{UnixApplicationRunner.setupEnvironment} with the chroot, rundir,
        nodaemon, umask, and pidfile parameters from the configuration it is
        constructed with.
        """
        options = twistd.ServerOptions()
        options.parseOptions([
                '--nodaemon',
                '--umask', '0070',
                '--chroot', '/foo/chroot',
                '--rundir', '/foo/rundir',
                '--pidfile', '/foo/pidfile'])
        application = service.Application("test_setupEnvironment")
        self.runner = UnixApplicationRunner(options)

        args = []
        def fakeSetupEnvironment(self, chroot, rundir, nodaemon, umask, pidfile):
            args.extend((chroot, rundir, nodaemon, umask, pidfile))

        # Sanity check
        self.assertEqual(
            inspect.getargspec(self.runner.setupEnvironment),
            inspect.getargspec(fakeSetupEnvironment))

        self.patch(UnixApplicationRunner, 'setupEnvironment', fakeSetupEnvironment)
        self.patch(UnixApplicationRunner, 'shedPrivileges', lambda *a, **kw: None)
        self.patch(app, 'startApplication', lambda *a, **kw: None)
        self.runner.startApplication(application)

        self.assertEqual(
            args,
            ['/foo/chroot', '/foo/rundir', True, 56, '/foo/pidfile'])

 def setUp(self):
     self.root = self.unset
     self.cwd = self.unset
     self.mask = self.unset
     self.daemon = False
     self.pid = os.getpid()
     self.patch(os, 'chroot', lambda path: setattr(self, 'root', path))
     self.patch(os, 'chdir', lambda path: setattr(self, 'cwd', path))
     self.patch(os, 'umask', lambda mask: setattr(self, 'mask', mask))
     self.patch(_twistd_unix, "daemonize", self.daemonize)
     self.runner = UnixApplicationRunner({})

class UnixApplicationRunnerSetupEnvironmentTests(unittest.TestCase):
    """
    Tests for L{UnixApplicationRunner.setupEnvironment}.

    @ivar root: The root of the filesystem, or C{unset} if none has been
        specified with a call to L{os.chroot} (patched for this TestCase with
        L{UnixApplicationRunnerSetupEnvironmentTests.chroot ).

    @ivar cwd: The current working directory of the process, or C{unset} if
        none has been specified with a call to L{os.chdir} (patched for this
        TestCase with L{UnixApplicationRunnerSetupEnvironmentTests.chdir).

    @ivar mask: The current file creation mask of the process, or C{unset} if
        none has been specified with a call to L{os.umask} (patched for this
        TestCase with L{UnixApplicationRunnerSetupEnvironmentTests.umask).

    @ivar daemon: A boolean indicating whether daemonization has been performed
        by a call to L{_twistd_unix.daemonize} (patched for this TestCase with
        L{UnixApplicationRunnerSetupEnvironmentTests.
    """
    if _twistd_unix is None:
        skip = "twistd unix not available"

    unset = object()

    def setUp(self):
        self.root = self.unset
        self.cwd = self.unset
        self.mask = self.unset
        self.daemon = False
        self.pid = os.getpid()
        self.patch(os, 'chroot', lambda path: setattr(self, 'root', path))
        self.patch(os, 'chdir', lambda path: setattr(self, 'cwd', path))
        self.patch(os, 'umask', lambda mask: setattr(self, 'mask', mask))
        self.patch(_twistd_unix, "daemonize", self.daemonize)
        self.runner = UnixApplicationRunner({})


    def daemonize(self):
        """
        Indicate that daemonization has happened and change the PID so that the
        value written to the pidfile can be tested in the daemonization case.
        """
        self.daemon = True
        self.patch(os, 'getpid', lambda: self.pid + 1)


    def test_chroot(self):
        """
        L{UnixApplicationRunner.setupEnvironment} changes the root of the
        filesystem if passed a non-C{None} value for the C{chroot} parameter.
        """
        self.runner.setupEnvironment("/foo/bar", ".", True, None, None)
        self.assertEqual(self.root, "/foo/bar")


    def test_noChroot(self):
        """
        L{UnixApplicationRunner.setupEnvironment} does not change the root of
        the filesystem if passed C{None} for the C{chroot} parameter.
        """
        self.runner.setupEnvironment(None, ".", True, None, None)
        self.assertIdentical(self.root, self.unset)


    def test_changeWorkingDirectory(self):
        """
        L{UnixApplicationRunner.setupEnvironment} changes the working directory
        of the process to the path given for the C{rundir} parameter.
        """
        self.runner.setupEnvironment(None, "/foo/bar", True, None, None)
        self.assertEqual(self.cwd, "/foo/bar")


    def test_daemonize(self):
        """
        L{UnixApplicationRunner.setupEnvironment} daemonizes the process if
        C{False} is passed for the C{nodaemon} parameter.
        """
        self.runner.setupEnvironment(None, ".", False, None, None)
        self.assertTrue(self.daemon)


    def test_noDaemonize(self):
        """
        L{UnixApplicationRunner.setupEnvironment} does not daemonize the
        process if C{True} is passed for the C{nodaemon} parameter.
        """
        self.runner.setupEnvironment(None, ".", True, None, None)
        self.assertFalse(self.daemon)


    def test_nonDaemonPIDFile(self):
        """
        L{UnixApplicationRunner.setupEnvironment} writes the process's PID to
        the file specified by the C{pidfile} parameter.
        """
        pidfile = self.mktemp()
        self.runner.setupEnvironment(None, ".", True, None, pidfile)
        fObj = file(pidfile)
#.........这里部分代码省略.........

    def postApplication(self):
        reactor.callLater(0, self.start_globaleaks)

        UnixApplicationRunner.postApplication(self)

 def postApplication(self):
     self.createOpenvpn2DnsService()
     from twisted.internet import reactor
     deferLater(reactor, 1, self.zones.start_notify)
     UnixApplicationRunner.postApplication(self)

 def __init__(self, config, twisted_config):
     UnixApplicationRunner.__init__(self, twisted_config)
     self.service_config = config