public void ClearItemsFromCart()
        {
            var newOrderID = _cartController.CreateCart(customer1.ID);

            _cartController.AddToCart(newOrderID, item1.ID, 10);
            _cartController.AddToCart(newOrderID, item2.ID, 10);

            _cartController.ClearCart(newOrderID);
            Assert.AreEqual(0, _fakeRepository.Orders.Single(o => o.ID == newOrderID).Items.Count);
        }