'L{IListeningPort.getHost} returns an L{IPv4Address} giving a
dotted-quad of the IPv4 address the port is listening on as well as
the port number.'

def test_getHost(self):

    (host, portNumber) = findFreePort(type=socket.SOCK_DGRAM)
    reactor = self.buildReactor()
    port = self.getListeningPort(reactor, DatagramProtocol(), port=portNumber, interface=host)
    self.assertEqual(port.getHost(), IPv4Address('UDP', host, portNumber))
