BookStore.Controllers.HomeController.Index C# (CSharp) Method

        public ActionResult Index(string sortOrder, int? page)
        {
            ViewBag.CurrentSort = sortOrder;
            //ViewBag.NameSortParm = String.IsNullOrEmpty(sortOrder) ? "name_desc" : "";
            //ViewBag.DateSortParm = sortOrder == "Date" ? "date_desc" : "Date";

            var books = from s in db.Books
                        select s;

            switch (sortOrder)
            {
                case "name_desc":
                    books = books.OrderByDescending(s => s.Title);
                    break;

                default:  // Name ascending
                    books = books.OrderBy(s => s.Title);
                    break;
            }
            int pageSize = 3;
            int pageNumber = (page ?? 1);
            return View(books.ToPagedList(pageNumber, pageSize));
        }

        public void Index()
        {
            // Arrange
            HomeController controller = new HomeController();

            // Act
            ViewResult result = controller.Index() as ViewResult;

            // Assert
            Assert.IsNotNull(result);
        }