public void DecoratedDisposableResultIsAddedToDisposables() { // Fixture setup var disposable = new DisposableSpy(); var builder = new DelegatingSpecimenBuilder { OnCreate = (r, c) => disposable }; var sut = new DisposableTracker(builder); // Exercise system var dummyRequest = new object(); var dummyContext = new DelegatingSpecimenContext(); sut.Create(dummyRequest, dummyContext); // Verify outcome Assert.Contains(disposable, sut.Disposables); // Teardown }