public async void GetSessionsAndSpeakers_Success() { SessionSpeakerCollection sessionSpeakerCollection = GetMockSessionsAndSpeakerCollection(); demoConferenceService.GetAllSessionsAndSpeakers().Returns(sessionSpeakerCollection); var result = await conferenceController.GetAllSessionsAndSpeakers(); var viewResult = Assert.IsType <OkObjectResult>(result); var model = Assert.IsAssignableFrom <SessionSpeakerCollection>( viewResult.Value); Assert.Equal(3, model.Sessions.Count); }