public void NotifyObservers_MultipleObserversDetachingOrAttachingOthers_NoUpdatesForAttachedAndDetachedObservers() { // Setup var mocks = new MockRepository(); var testObservable = new TestObservable(); var observer1 = mocks.Stub <IObserver>(); var observer2 = mocks.Stub <IObserver>(); var observer3 = mocks.Stub <IObserver>(); var observer4 = mocks.Stub <IObserver>(); var observer5 = mocks.Stub <IObserver>(); var observer6 = mocks.Stub <IObserver>(); testObservable.Attach(observer1); testObservable.Attach(observer2); testObservable.Attach(observer3); testObservable.Attach(observer4); testObservable.Attach(observer6); observer1.Expect(o => o.UpdateObserver()); observer2.Expect(o => o.UpdateObserver()).Do((Action)(() => testObservable.Detach(observer3))); observer3.Expect(o => o.UpdateObserver()).Repeat.Never(); // A detached observer should no longer be updated observer4.Expect(o => o.UpdateObserver()).Do((Action)(() => testObservable.Attach(observer5))); observer5.Expect(o => o.UpdateObserver()).Repeat.Never(); // An attached observer should not be updated too observer6.Expect(o => o.UpdateObserver()); mocks.ReplayAll(); // Call testObservable.NotifyObservers(); // Assert mocks.VerifyAll(); }
public void NotifyObserver_AttachedObserverDetachedAgain_ObserverNoLongerNotified() { // Setup var mocks = new MockRepository(); var observer = mocks.StrictMock <IObserver>(); mocks.ReplayAll(); var observable = new TestObservable(); observable.Attach(observer); observable.Detach(observer); // Call observable.NotifyObservers(); // Assert mocks.VerifyAll(); // Expect no calls on 'observer' }