'Test that an exception which is a subclass of L{pb.Error} but not
known on the client side has its type set properly.'

def test_unknownFailure(self):

    def failureUnknown(fail):
        self.assertEqual(fail.type, 'twisted.spread.test.test_pbfailure.UnknownError')
        return 4310
    return self._testImpl('unknownError', 4310, failureUnknown)
