def test_dumber(self):
        """
        L{IReactorUNIX.connectUNIX} can be used to connect a client to a server
        started with L{IReactorUNIX.listenUNIX}.
        """
        filename = self.mktemp()
        serverFactory = MyServerFactory()
        serverConnMade = defer.Deferred()
        serverFactory.protocolConnectionMade = serverConnMade
        unixPort = reactor.listenUNIX(filename, serverFactory)
        self.addCleanup(unixPort.stopListening)
        clientFactory = MyClientFactory()
        clientConnMade = defer.Deferred()
        clientFactory.protocolConnectionMade = clientConnMade
        reactor.connectUNIX(filename, clientFactory)
        d = defer.gatherResults([serverConnMade, clientConnMade])
        def allConnected(args):
            serverProtocol, clientProtocol = args
            # Incidental assertion which may or may not be redundant with some
            # other test.  This probably deserves its own test method.
            self.assertEqual(clientFactory.peerAddresses,
                             [address.UNIXAddress(filename)])

            clientProtocol.transport.loseConnection()
            serverProtocol.transport.loseConnection()
        d.addCallback(allConnected)
        return d

        L{IReactorUNIX.connectUNIX} can be used to connect a client to a server
        started with L{IReactorUNIX.listenUNIX}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_unix.py