public void ClusterDomainEventPublisher_should_support_unsubscribe()
{
var subscriber = CreateTestProbe();
_publisher.Tell(new InternalClusterAction.Subscribe(subscriber.Ref, ClusterEvent.SubscriptionInitialStateMode.InitialStateAsSnapshot, ImmutableHashSet.Create(typeof(ClusterEvent.IMemberEvent))));
subscriber.ExpectMsg<ClusterEvent.CurrentClusterState>();
_publisher.Tell(new InternalClusterAction.Unsubscribe(subscriber.Ref, typeof(ClusterEvent.IMemberEvent)));
_publisher.Tell(new InternalClusterAction.PublishChanges(g3));
subscriber.ExpectNoMsg(TimeSpan.FromMilliseconds(500));
_memberSubscriber.ExpectMsg(new ClusterEvent.MemberExited(bExiting));
_memberSubscriber.ExpectMsg(new ClusterEvent.MemberUp(cUp));
}