test_task.py 文件源码

def test_singleStopCallback(self):
        """
        L{task.react} doesn't try to stop the reactor if the L{defer.Deferred}
        the function it is passed is called back after the reactor has already
        been stopped.
        """
        def main(reactor):
            reactor.callLater(1, reactor.stop)
            finished = defer.Deferred()
            reactor.addSystemEventTrigger(
                'during', 'shutdown', finished.callback, None)
            return finished
        r = _FakeReactor()
        exitError = self.assertRaises(
            SystemExit, task.react, main, _reactor=r)
        self.assertEqual(r.seconds(), 1)

        self.assertEqual(0, exitError.code)