30DaysOfTDD_Day20_Part3

        private Dictionary<Guid, int> CheckInventoryLevels(ShoppingCart shoppingCart, Guid orderFulfillmentSessionId)
        {
            var firstItemId = shoppingCart.Items[0].ItemId;
            var firstItemQuantity = shoppingCart.Items[0].Quantity;

            //Check Inventory Level
            var itemIsInInventory = _orderFulfillmentService.IsInInventory(orderFulfillmentSessionId, firstItemId, firstItemQuantity);

            var orderForFulfillmentService = new Dictionary<Guid, int>();
            orderForFulfillmentService.Add(firstItemId, firstItemQuantity);
            return orderForFulfillmentService;
        }