public void DeleteQuestionTest()
        {
            // Arrange
            MainViewModel mainViewModel = new MainViewModel();
            var i = mainViewModel.Questions.Count;

            // Act
            mainViewModel.DeleteQuestion();
            var j = mainViewModel.Questions.Count;

            // Assert
            Assert.AreEqual((i - 1), j);
        }
        public void AddQuestionTest()
        {
            // Arrange
            MainViewModel mainViewModel = new MainViewModel();
            var i = mainViewModel.Questions.Count;

            // Act
            mainViewModel.SelectedQuestion.Id = 1;
            mainViewModel.SelectedQuestion.Text = "this is a test question";

            mainViewModel.SaveQuestion();

            var j = mainViewModel.Questions.Count;

            // Assert
            Assert.AreEqual((i + 1), j);
        }