public async Task GetParticipantFbAsync_ShouldReturnParticipantFb_ParticipantFbExists() { int id = 1; List <ParticipantFeedbackVM> feedbackVMs = new List <ParticipantFeedbackVM>(); ParticipantFeedbackVM feedback = new ParticipantFeedbackVM(); List <string> fbNames = new List <string>(); fbNames.Add("Good Event"); fbNames.Add("Excellent"); feedback.Feedback = fbNames; feedbackVMs.Add(feedback); _feedbackRepository.Setup(x => x.GetParticipantFeedbacksForEvent(id)).ReturnsAsync(feedbackVMs); IEnumerable <ParticipantFeedbackVM> result = await feedbackController.GetParticipantFeedbacks(id); Assert.IsNotEmpty(result); }