def test_echo(self):
        t = proto_helpers.StringTransport()
        a = wire.Echo()
        a.makeConnection(t)
        a.dataReceived("hello")
        a.dataReceived("world")
        a.dataReceived("how")
        a.dataReceived("are")
        a.dataReceived("you")
        self.assertEqual(t.value(), "helloworldhowareyou")
Test wire.Echo protocol: send some data and check it send it back.
dataset/ETHPy150Open twisted/twisted/twisted/test/test_protocols.py/WireTests.test_echo