def test_callLater(self):
        d = Deferred()
        reactor.callLater(0, d.callback, None)
        d.addCallback(self.assertEqual, None)
        return d
Test that a DelayedCall really calls the function it is
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_internet.py/TimeTestCase.test_callLater