update to pointer

api-tests/cart.http

@@ -9,30 +9,28 @@ Content-Type: application/json
 }
 
 ### Update quanity of item in cart
-PUT https://cart.tornberg.me/api/12345/1
+PUT https://cart.tornberg.me/api/12345
 Content-Type: application/json
 
 {
+	"id": 1,
 	"quantity": 1
 }
 
-### Add item to cart
+### Delete item from cart
-POST http://localhost:8080/cart/12345/item
+DELETE https://cart.tornberg.me/api/12345/1
+
+
+### Set delivery
+
+POST https://cart.tornberg.me/api/12345/delivery
 Content-Type: application/json
 
 {
-	"itemId": "67890",
+	"provider": "postnord",
-	"quantity": 2
+	"items": [
-}
-
-### Remove item from cart
-DELETE http://localhost:8080/cart/12345/item/67890
-
-### Checkout cart
-POST http://localhost:8080/cart/12345/checkout
-Content-Type: application/json
-
 		{
-	"paymentMethod": "credit_card",
+			"id": 1,
-	"shippingAddress": "123 Main St, Anytown, USA"
+		}
+	]
 }

pool-server.go

@@ -172,7 +172,7 @@ func (s *PoolServer) HandleQuantityChange(w http.ResponseWriter, r *http.Request
 	}
 	reply, err := s.pool.Process(ToCartId(id), Message{
 		Type:    ChangeQuantityType,
-		Content: changeQuantity,
+		Content: &changeQuantity,
 	})
 	if err != nil {
 		return err