test_defer.py 文件源码

def testTimeOut(self):
        """
        Test that a Deferred which has setTimeout called on it and never has
        C{callback} or C{errback} called on it eventually fails with a
        L{error.TimeoutError}.
        """
        L = []
        d = defer.Deferred()
        d.setTimeout(0.01)
        self.assertFailure(d, defer.TimeoutError)
        d.addCallback(L.append)
        self.failIf(L, "Deferred failed too soon.")
        return d