public void Feeder_DeRegisterMethodTest() { var feeder = new FeedManager(); var provider = new ProviderMock(new Uri("http://feeds.feedburner.com/TEDTalks_video"), new FillerMock(null)); feeder.Register(provider); bool canDeRegister = feeder.DeRegister(provider); Assert.IsTrue(canDeRegister); bool isContains = feeder.Contains(provider); Assert.IsFalse(isContains); }