public void sould_return__viewName()
        {
            fizzBuzzModel = new FizzBuzzModel {
                InputValue = 2
            };
            var stub = new List <NumberModel>();

            stub.Add(new NumberModel()
            {
                InputNumber = "1", Number = FizzOrBuzzValue.Buzz
            });
            stub.Add(new NumberModel()
            {
                InputNumber = "2", Number = FizzOrBuzzValue.Buzz
            });
            fizzBuzzManager.Setup(x => x.GetNumbers(fizzBuzzModel)).Returns(stub);

            fizzBuzzController = new FizzBuzzController(fizzBuzzManager.Object);
            result             = fizzBuzzController.FizzBuzzForm(fizzBuzzModel, 1);
            var viewResult = result as ViewResult;

            Assert.IsNotNull(result);
            fizzBuzzManager.Verify(x => x.GetNumbers(fizzBuzzModel), Times.Once);
            Assert.AreEqual("FizzBuzzForm", viewResult.ViewName);
        }