public async Task GetunregisteredFbAsync_ShouldReturnunregisteredFb_unregisteredFbExists() { int id = 1; List <ParticipantFeedbackVM> feedbackVMs = new List <ParticipantFeedbackVM>(); ParticipantFeedbackVM feedback = new ParticipantFeedbackVM(); List <string> fbNames = new List <string>(); fbNames.Add("Incorrectly registered"); feedback.Feedback = fbNames; feedbackVMs.Add(feedback); _feedbackRepository.Setup(x => x.GetUnregisteredFeedbacksForEvent(id)).ReturnsAsync(feedbackVMs); IEnumerable <ParticipantFeedbackVM> result = await feedbackController.GetUnregisteredFeedbacks(id); Assert.IsNotEmpty(result); }