def test_invalidUnregisterProducer(self):
        self.assertRaises(RuntimeError, self.transport.unregisterProducer)
L{StringTransport.unregisterProducer} raises L{RuntimeError} if called
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_stringtransport.py/StringTransportTests.test_invalidUnregisterProducer