public void GivenContextWithObserverAttachedThatThrowsInvalidOperationException_WhenNotifyingLocationCalculationsElementInEnumerationToObserve_ThenNoExceptionThrown() { // Given var mockRepository = new MockRepository(); var observer = mockRepository.StrictMock <IObserver>(); observer.Expect(o => o.UpdateObserver()).Do((Action)(() => throw new InvalidOperationException())); mockRepository.ReplayAll(); var observable = new TestObservable(); var locationCalculationsEnumerationToObserve = new ObservableList <IObservable> { observable }; var context = new TestLocationCalculationsContext(new object(), locationCalculationsEnumerationToObserve); context.Attach(observer); // When observable.NotifyObservers(); // Then mockRepository.VerifyAll(); }
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 GivenContextWithObserverAttached_WhenNotifyingLocationCalculationsElementInEnumerationToObserve_ThenObserverCorrectlyNotified() { // Given var mockRepository = new MockRepository(); var observer = mockRepository.StrictMock <IObserver>(); observer.Expect(o => o.UpdateObserver()); mockRepository.ReplayAll(); var observable = new TestObservable(); var locationCalculationsEnumerationToObserve = new ObservableList <IObservable> { observable }; var context = new TestLocationCalculationsContext(new object(), locationCalculationsEnumerationToObserve); context.Attach(observer); // When observable.NotifyObservers(); // Then mockRepository.VerifyAll(); }
public void RecursiveObserverObservingItemsInContainers_NotifyObserversAtSpecifiedLevel_UpdateObserversActionShouldBePerformed(int nestingLevel) { // Given var counter = 0; var rootContainer = new TestContainer(); TestContainer currentNestedContainer = rootContainer; var currentTestObservable = new TestObservable(); InitializeHierarchy(nestingLevel, ref currentNestedContainer, ref currentTestObservable); using (new RecursiveObserver <TestContainer, TestObservable>(() => counter++, GetChildren) { Observable = rootContainer }) { // When currentTestObservable.NotifyObservers(); // Then Assert.AreEqual(1, counter); currentNestedContainer.NotifyObservers(); Assert.AreEqual(1, counter); // Nothing should have happened } }
public void RecursiveObserverObservingItemsInContainers_ContainerItemsRemoved_UpdateObserversActionShouldNoLongerBePerformed(int nestingLevel) { // Given var counter = 0; var rootContainer = new TestContainer(); TestContainer currentNestedContainer = rootContainer; var currentTestObservable = new TestObservable(); InitializeHierarchy(nestingLevel, ref currentNestedContainer, ref currentTestObservable); using (new RecursiveObserver <TestContainer, TestObservable>(() => counter++, GetChildren) { Observable = rootContainer }) { // When rootContainer.Children.Clear(); rootContainer.NotifyObservers(); // Collection changes should always be notified currentTestObservable.NotifyObservers(); // Then Assert.AreEqual(0, counter); } }
public void Observer_WithObservableSetAndThenDisposed_NotifyObserversNoLongerResultsInPerformingUpdateObserversAction() { // Setup var counter = 0; var observable = new TestObservable(); var observer = new Observer(() => counter++) { Observable = observable }; observer.Dispose(); // Call observable.NotifyObservers(); // Assert Assert.AreEqual(0, counter); }
public void Observer_WithObservable_NotifyObserversResultsInPerformingUpdateObserversAction() { // Setup var counter = 0; var observable = new TestObservable(); using (new Observer(() => counter++) { Observable = observable }) { // Call observable.NotifyObservers(); // Assert Assert.AreEqual(1, counter); } }
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' }
public void NotifyObservers_WithObserverAttached_ObserverIsNotified() { // Setup var mocks = new MockRepository(); var observer = mocks.StrictMock <IObserver>(); observer.Expect(o => o.UpdateObserver()); // Expect to be called once mocks.ReplayAll(); var observable = new TestObservable(); observable.Attach(observer); // Call observable.NotifyObservers(); // Assert mocks.VerifyAll(); }
public void RecursiveObserverObservingItemsInContainers_RecursiveObserverDispose_UpdateObserversActionShouldNoLongerBePerformed(int nestingLevel) { // Given var counter = 0; var rootContainer = new TestContainer(); TestContainer currentNestedContainer = rootContainer; var currentTestObservable = new TestObservable(); InitializeHierarchy(nestingLevel, ref currentNestedContainer, ref currentTestObservable); var recursiveObserver = new RecursiveObserver <TestContainer, TestObservable>(() => counter++, GetChildren) { Observable = rootContainer }; // When recursiveObserver.Dispose(); currentTestObservable.NotifyObservers(); // Then Assert.AreEqual(0, counter); Assert.IsNull(recursiveObserver.Observable); }