[Test]
        public void Can_View_A_Single_Page_Of_Products()
        {
            //Arrange, if there are 5 products in the repository...
            IProductsRepository repository = UnitTestHelpers.MockProductsRepository(
                new Product { Name = "P1" }, new Product { Name = "P2" }, new Product { Name = "P3" },
                new Product { Name = "P4" }, new Product { Name = "P5" }
                );

            var controller = new ProductsController(repository);
            controller.PageSize = 3;

            //Act When the user asks for the second page...
            var result = controller.List(null, 2);

            //Assert (they'll just see the last two produdcts)
            var viewModel = (ProductsListViewModel)result.ViewData.Model;
            var displayedProducts = viewModel.Products;
            displayedProducts.Count.ShouldEqual(2);
            displayedProducts[0].Name.ShouldEqual("P4");
            displayedProducts[1].Name.ShouldEqual("P5");
        }