public void GetQuizTemplates_WhenMultipleTemplates_ReturnsOkResultWithTemplatesArray() { // Arrange var quizTemplatesStub = new[] { new QuizTemplate(), new QuizTemplate() }; var mockQuizTemplateRepo = new Mock <IQuizTemplateRepository>(); mockQuizTemplateRepo.Setup(repo => repo.Get(null, null)) .Returns(value: quizTemplatesStub); var mockUow = new Mock <IUnitOfWork>(); mockUow.Setup(uow => uow.QuizTemplateRepository) .Returns(mockQuizTemplateRepo.Object); var controller = new ScreenController(mockUow.Object); // Act var response = controller.GetQuizTemplates(); // Assert var objectResult = Assert.IsType <OkObjectResult>(response); var quizTemplates = Assert.IsAssignableFrom <IEnumerable <QuizTemplate> >(objectResult.Value); Assert.NotNull(quizTemplates); Assert.Equal(2, quizTemplates.Count()); }