Akka.Cluster.Tools.Tests.MultiNode.PublishSubscribe.DistributedPubSubMediatorSpec.DistributedPubSubMediator_should_receive_proper_UnsubscribeAck_message C# (CSharp) Method

        public void DistributedPubSubMediator_should_receive_proper_UnsubscribeAck_message()
        {
            DistributedPubSubMediator_should_remove_entries_when_node_is_removed();

            Within(TimeSpan.FromSeconds(15), () =>
            {
                RunOn(() =>
                {
                    var user = CreateChatUser("u111");
                    var topic = "sample-topic-14";
                    var s1 = new Subscribe(topic, user);
                    Mediator.Tell(s1);
                    ExpectMsg<SubscribeAck>(x => x.Subscribe.Equals(s1));
                    var uns = new Unsubscribe(topic, user);
                    Mediator.Tell(uns);
                    ExpectMsg<UnsubscribeAck>(x => x.Unsubscribe.Equals(uns));
                }, _first);
                EnterBarrier("after-15");
            });
        }