public void When_subscribing_same_handler_multiple_times()
{
var hub = new MessageHub();
var totalMsgCount = 0;
hub.RegisterGlobalHandler((type, msg) =>
{
type.ShouldBe(typeof(string));
msg.ShouldBeOfType <string>();
Interlocked.Increment(ref totalMsgCount);
});
var queue = new ConcurrentQueue <string>();
Action <string> subscriber = msg => queue.Enqueue(msg);
var tokenOne = hub.Subscribe(subscriber);
var tokenTwo = hub.Subscribe(subscriber);
hub.IsSubscribed(tokenOne);
hub.IsSubscribed(tokenTwo);
hub.Publish("A");
queue.Count.ShouldBe(2);
totalMsgCount.ShouldBe(1);
}
public void When_operating_on_a_disposed_hub()
{
var totalMessages = 0;
var hub = new MessageHub();
hub.RegisterGlobalHandler((type, msg) =>
{
type.ShouldBe(typeof(string));
msg.ShouldBeOfType <string>();
Interlocked.Increment(ref totalMessages);
});
var queue = new ConcurrentQueue <string>();
Action <string> handler = msg => queue.Enqueue(msg);
var token = hub.Subscribe(handler);
hub.Dispose();
Should.NotThrow(() => hub.Subscribe(handler));
Should.NotThrow(() => hub.Unsubscribe(token));
Should.NotThrow(() => hub.IsSubscribed(token));
Should.NotThrow(() => hub.ClearSubscriptions());
totalMessages.ShouldBe(0);
}
public void When_testing_handler_exists()
{
var hub = new MessageHub();
hub.ClearSubscriptions();
Action <string> subscriberOne = msg => { };
var tokenOne = hub.Subscribe(subscriberOne);
hub.IsSubscribed(tokenOne).ShouldBeTrue();
Action <string> subscriberTwo = msg => { };
var tokenTwo = hub.Subscribe(subscriberTwo);
hub.IsSubscribed(tokenTwo).ShouldBeTrue();
Action <string> subscriberThree = msg => { };
var tokenThree = hub.Subscribe(subscriberThree);
hub.IsSubscribed(tokenThree).ShouldBeTrue();
Action <string> subscriberFour = msg => { };
var tokenFour = hub.Subscribe(subscriberFour);
hub.IsSubscribed(tokenFour).ShouldBeTrue();
hub.Unsubscribe(tokenThree);
hub.IsSubscribed(tokenThree).ShouldBeFalse();
hub.Unsubscribe(tokenFour);
hub.IsSubscribed(tokenFour).ShouldBeFalse();
hub.IsSubscribed(tokenTwo).ShouldBeTrue();
hub.IsSubscribed(tokenOne).ShouldBeTrue();
hub.ClearSubscriptions();
hub.IsSubscribed(tokenOne).ShouldBeFalse();
hub.IsSubscribed(tokenTwo).ShouldBeFalse();
hub.IsSubscribed(tokenThree).ShouldBeFalse();
hub.IsSubscribed(tokenFour).ShouldBeFalse();
// now let's add back one subscription
tokenFour = hub.Subscribe(subscriberFour);
hub.IsSubscribed(tokenFour).ShouldBeTrue();
}