public void ShouldRegisterOneSubscriber()
{
EventBroker broker = new EventBroker();
EventHandler subscriber = delegate { };
broker.RegisterSubscriber("SubscribedEvent1", subscriber);
List<string> published = new List<string>(broker.RegisteredEvents);
List<object> publishers = new List<object>(broker.GetPublishersFor("SubscribedEvent1"));
List<EventHandler> subscribers = new List<EventHandler>(broker.GetSubscribersFor("SubscribedEvent1"));
Assert.AreEqual(1, published.Count);
Assert.AreEqual("SubscribedEvent1", published[0]);
Assert.AreEqual(0, publishers.Count);
Assert.AreEqual(1, subscribers.Count);
Assert.AreSame(subscriber, subscribers[0]);
}
public void ShouldRegisterOnePublisherAndOneSubscriber()
{
EventBroker broker = new EventBroker();
EventSource1 publisher = new EventSource1();
string publishedEventName = "MyEvent";
EventHandler subscriber = delegate { };
broker.RegisterPublisher(publishedEventName, publisher, "Event1");
broker.RegisterSubscriber(publishedEventName, subscriber);
List<string> published = new List<string>(broker.RegisteredEvents);
List<object> publishers = new List<object>(broker.GetPublishersFor(publishedEventName));
List<EventHandler> subscribers = new List<EventHandler>(broker.GetSubscribersFor(publishedEventName));
Assert.AreEqual(1, published.Count);
Assert.AreEqual(publishedEventName, published[0]);
Assert.AreEqual(1, publishers.Count);
Assert.AreSame(publisher, publishers[0]);
Assert.AreEqual(1, subscribers.Count);
Assert.AreSame(subscriber, subscribers[0]);
}
public void ShouldCallSubscriberWhenPublisherFiresEvent()
{
EventBroker broker = new EventBroker();
EventSource1 publisher = new EventSource1();
string publishedEventName = "MyEvent";
bool subscriberFired = false;
EventHandler subscriber = delegate { subscriberFired = true; };
broker.RegisterPublisher(publishedEventName, publisher, "Event1");
broker.RegisterSubscriber(publishedEventName, subscriber);
publisher.FireEvent1();
Assert.IsTrue(subscriberFired);
}
public void ShouldRemoveSubscriberFromListOnUnregistration()
{
EventBroker broker = new EventBroker();
string publishedEventName = "SomeEvent";
EventHandler subscriber = delegate { };
broker.RegisterSubscriber(publishedEventName, subscriber);
broker.UnregisterSubscriber(publishedEventName, subscriber);
Assert.AreEqual(0, new List<EventHandler>(broker.GetSubscribersFor(publishedEventName)).Count);
}