public void GetItemsFromCart()
        {
            ShoppingCart cart = new ShoppingCart();

            Dictionary<int, int> cartItems = new Dictionary<int,int>();
            cartItems.Add(1078,1);
            cartItems.Add(1079,2);

            context.Setup(p => p.HttpContext.Session[ShoppingCart.CartSessionKey]).Returns(cartItems);

            Dictionary<int, int> items = cart.GetItems(controllerContext);
            Assert.AreEqual(2,items.Count(), "Count is incorrect");
        }