'L{server.DNSServerFactory.__init__} accepts a C{clients} argument. The
value of this argument is a list and is used to extend the C{resolver}
L{resolve.ResolverChain}.'

def test_clients(self):

    dummyResolver = object()
    self.assertEqual(server.DNSServerFactory(clients=[dummyResolver]).resolver.resolvers, [dummyResolver])
