public void TestParentAndChildSubscription()
{
var hub = this.GetEventHub();
var args = new EventMock(10);
int called = 0;
Action<EventMock> handler = (e => called++);
hub.Subscribe(handler);
hub.Subscribe<EventMockChild>(handler);
hub.Raise(args);
called.Should().Be(1, "event handler should be called exactly once");
}
public void TestEventInterface()
{
var hub = this.GetEventHub();
var args = new EventMock(10);
int called = 0;
hub.Subscribe<IEvent>(e =>
{
e.Should().BeSameAs(args, "the passed arguments should be the same as provided");
called++;
});
hub.Raise(args);
called.Should().Be(1, "event handler should be called exactly once");
}
public void TestDoubleSubscription()
{
var hub = this.GetEventHub();
var args = new EventMock(10);
int called = 0;
Action<IEvent> handler = (e => called++);
hub.Subscribe(handler);
hub.Subscribe(handler);
hub.Raise(args);
called.Should().Be(2, "event handler should be called exactly twice");
}
public void TestNoSubscription()
{
var hub = this.GetEventHub();
var args = new EventMock(10);
hub.Raise(args);
}
public void TestHandlerUnsubscribingItself()
{
var hub = this.GetEventHub();
var args = new EventMock(10);
int beforeHandlerCalled = 0;
Action<IEvent> beforeHandler = (e => beforeHandlerCalled++);
hub.Subscribe(beforeHandler);
int unsubscribingHandlerCalled = 0;
Action<IEvent> unsubscribingHandler = null;
unsubscribingHandler = (e => { unsubscribingHandlerCalled++; hub.Unsubscribe(unsubscribingHandler); });
hub.Subscribe(unsubscribingHandler);
int afterHandlerCalled = 0;
Action<IEvent> afterHandler = (e => afterHandlerCalled++);
hub.Subscribe(afterHandler);
hub.Raise(args);
beforeHandlerCalled.Should().Be(1, "before event handler should be called exactly once after the first raise");
unsubscribingHandlerCalled.Should().Be(1, "unsubscribing event handler should be called exactly once after the first raise");
afterHandlerCalled.Should().Be(1, "after event handler should be called exactly once after the first raise");
hub.Raise(args);
beforeHandlerCalled.Should().Be(2, "before event handler should be called exactly twice");
unsubscribingHandlerCalled.Should().Be(1, "unsubscribing event handler should not be called after the second raise since it has unsubscribed itself during the first");
afterHandlerCalled.Should().Be(2, "after event handler should be called exactly twice");
}
public void TestUninitialize()
{
var hub = this.GetEventHub();
var args = new EventMock(10);
int called = 0;
Action<EventMock> handler = (e => called++);
hub.Subscribe(handler);
hub.Raise(args);
called.Should().Be(1, "event handler should be called exactly once after the first raise");
}