public void TestOfGettingCategoryWithTheMostAndTheLessQuestions() { //Arrange var questions = new List <Question>() { new Question { Id = 1, QuestionText = "Ile to jest 25 + 25?", CategoryId = 1, Category = new Category() { Id = 1, Name = "Matematyka", IsAccepted = true }, IsAccepted = true }, new Question { Id = 2, QuestionText = "Ile wynosi pierwiastek kwadratowty z 64?", CategoryId = 1, Category = new Category() { Id = 1, Name = "Matematyka", IsAccepted = true }, IsAccepted = true }, new Question { Id = 3, QuestionText = "W którym roku zaczęła się II WŚ?", CategoryId = 2, Category = new Category() { Id = 2, Name = "Historia", IsAccepted = true }, IsAccepted = false } }; var catRepo = new Mock <ICategoryAndQuestionForAdminRepository>(); var userRepo = new Mock <IUsersRolesAndScoresRepository>(); var statsRepo = new Mock <IStatsRepository>(); var config = new MapperConfiguration(conf => { conf.AddProfile(new MappingProfile()); }); var mapper = config.CreateMapper(); catRepo.Setup(s => s.ShowQuestions()).Returns(questions.AsQueryable()); var statsServ = new StatsService(catRepo.Object, userRepo.Object, statsRepo.Object, mapper); var stats = statsServ.GetStatsAboutCatQueAns(); Assert.Equal(questions[2].Category.Name, stats.CategoryWithTheFewestQuestions); Assert.Equal(questions[0].Category.Name, stats.CategoryWithTheMostQuestions); }