public void GetAllRemindersShouldReturnAList() { var mockRepo = new Mock <IReminderRepository>(); mockRepo.Setup(repo => repo.GetAllReminders()).Returns(this.GetReminders()); var service = new API.Service.ReminderService(mockRepo.Object); var actual = service.GetAllReminders(); Assert.IsAssignableFrom <List <Reminder> >(actual); Assert.NotEmpty(actual); }