30DaysOfTDD_Day20_Part0

        private void PlaceOrderWithFulfillmentService(ShoppingCart shoppingCart, Customer customer)
        {
            //Open Session
            var orderFulfillmentSessionId = OpenOrderFulfillmentSession();
              
            PlaceOrderWithFulfillmentService(orderFulfillmentSessionId, shoppingCart, customer);
                         
            //Close Session
            CloseOrderFulfillmentService(orderFulfillmentSessionId);
        }
  
        private void PlaceOrderWithFulfillmentService(Guid orderFulfillmentSessionId, ShoppingCart shoppingCart, Customer customer)
        {
            var firstItemId = shoppingCart.Items[0].ItemId;
            var firstItemQuantity = shoppingCart.Items[0].Quantity;

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

            //Place Orders
            var orderForFulfillmentService = new Dictionary<Guid, int>();
            orderForFulfillmentService.Add(firstItemId, firstItemQuantity);
            var orderPlaced = _orderFulfillmentService.PlaceOrder(orderFulfillmentSessionId,
                orderForFulfillmentService,
                customer.ShippingAddress.ToString());
        }
  
        private void CloseOrderFulfillmentService(Guid orderFulfillmentSessionId)
        {
            _orderFulfillmentService.CloseSession(orderFulfillmentSessionId);
        }
  
        private Guid OpenOrderFulfillmentSession()
        {
            var orderFulfillmentSessionId = _orderFulfillmentService.OpenSession(USERNAME, PASSWORD);
            return orderFulfillmentSessionId;
        }