'L{server.DNSServerFactory.resolver} contains an ordered list of
authorities, caches and clients.'

def test_resolverOrder(self):

    class DummyAuthority(object, ):
        pass
    class DummyCache(object, ):
        pass
    class DummyClient(object, ):
        pass
    self.assertEqual(server.DNSServerFactory(authorities=[DummyAuthority], caches=[DummyCache], clients=[DummyClient]).resolver.resolvers, [DummyAuthority, DummyCache, DummyClient])
