'L{_ChunkedTransferDecoder.dataReceived} raises C{RuntimeError} if it
is called after it has seen the last chunk.'

def test_afterFinished(self):

    p = http._ChunkedTransferDecoder(None, (lambda bytes: None))
    p.dataReceived('0\r\n\r\n')
    self.assertRaises(RuntimeError, p.dataReceived, 'hello')
