public void ShouldAddDelegateToPublishingEventOnAddingPublisher()
{
PublishedEvent pe = new PublishedEvent();
EventSource1 publisher = new EventSource1();
pe.AddPublisher(publisher, "Event1");
Assert.AreEqual(1, publisher.NumberOfEvent1Delegates);
}
public void ShouldRemoveDelegateWhenRemovingPublisher()
{
PublishedEvent pe = new PublishedEvent();
EventSource1 publisher = new EventSource1();
pe.AddPublisher(publisher, "Event1");
pe.RemovePublisher(publisher, "Event1");
Assert.AreEqual(0, publisher.NumberOfEvent1Delegates);
}
public void ShouldCallSubscriberWhenPublisherFiresEvent()
{
PublishedEvent pe = new PublishedEvent();
EventSource1 publisher = new EventSource1();
pe.AddPublisher(publisher, "Event1");
bool subscriberCalled = false;
EventHandler subscriber = delegate { subscriberCalled = true; };
pe.AddSubscriber(subscriber);
publisher.FireEvent1();
Assert.IsTrue(subscriberCalled);
}
public void ShouldNotCallSubscriberAfterRemoval()
{
PublishedEvent pe = new PublishedEvent();
EventSource1 publisher = new EventSource1();
pe.AddPublisher(publisher, "Event1");
int numberOfSubscriberCalls = 0;
EventHandler subscriber = delegate { ++numberOfSubscriberCalls; };
pe.AddSubscriber(subscriber);
publisher.FireEvent1();
pe.RemoveSubscriber(subscriber);
publisher.FireEvent1();
Assert.AreEqual(1, numberOfSubscriberCalls);
}
public void ShouldMulticastEventsToMultipleSubscribers()
{
PublishedEvent pe = new PublishedEvent();
EventSource1 publisher = new EventSource1();
pe.AddPublisher(publisher, "Event1");
bool subscriber1Called = false;
EventHandler subscriber1 = delegate { subscriber1Called = true; };
bool subscriber2Called = false;
EventHandler subscriber2 = delegate { subscriber2Called = true; };
pe.AddSubscriber(subscriber1);
pe.AddSubscriber(subscriber2);
publisher.FireEvent1();
Assert.IsTrue(subscriber1Called);
Assert.IsTrue(subscriber2Called);
}