public void GetQuestions()
        {
            // Arrange
            var controller = new QuestionnaireController(_service);

            // Act
            var result = controller.Get();

            // Assert
            var viewResult = Assert.IsType <OkObjectResult>(result);
            var model      = Assert.IsAssignableFrom <BaseResponse <IEnumerable <QuestionDTO> > >(viewResult.Value);

            Assert.Equal(model.Data, _data);
        }