public void GetSetOfQuestions_ReturnsExpectedNumberOfQuestion_WhenProvidedNumberGreaterThanZero(int numberOfQuestionsToReturn) { //Arrange _quizRepository.GetAllQuestions().Returns(_allDatabaseQuestions.AsQueryable()); //Act var result = _service.GetSetOfQuestions(numberOfQuestionsToReturn); //Assert Assert.That(result.Count(), Is.EqualTo(numberOfQuestionsToReturn)); }