magento/graphql-ce#890: [Checkout] Replace usage of CartItemQuantity with CartItemInterface

Author: lenaorobei

app/code/Magento/QuoteGraphQl/Model/Cart/ExtractQuoteAddressData.php

@@ -61,7 +61,6 @@ public function execute(QuoteAddress $address): array
             return $addressData;
         }
 
-        $addressItemsData = [];
         foreach ($address->getAllItems() as $addressItem) {
             if ($addressItem instanceof \Magento\Quote\Model\Quote\Item) {
                 $itemId = $addressItem->getItemId();
@@ -70,15 +69,17 @@ public function execute(QuoteAddress $address): array
             }
             $productData = $addressItem->getProduct()->getData();
             $productData['model'] = $addressItem->getProduct();
-            $addressItemsData[] = [
+            $addressData['cart_items'][] = [
+                'cart_item_id' => $itemId,
+                'quantity' => $addressItem->getQty()
+            ];
+            $addressData['cart_items_v2'][] = [
                 'id' => $itemId,
                 'quantity' => $addressItem->getQty(),
                 'product' => $productData,
                 'model' => $addressItem,
             ];
         }
-        $addressData['cart_items'] = $addressItemsData;
-
         return $addressData;
     }
 }

app/code/Magento/QuoteGraphQl/etc/schema.graphqls

@@ -221,7 +221,8 @@ type ShippingCartAddress implements CartAddressInterface {
     selected_shipping_method: SelectedShippingMethod @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\ShippingAddress\\SelectedShippingMethod")
     customer_notes: String
     items_weight: Float @deprecated(reason: "This information shoud not be exposed on frontend")
-    cart_items: [CartItemInterface]
+    cart_items: [CartItemQuantity] @deprecated(reason: "`cart_items_v2` should be used instead")
+    cart_items_v2: [CartItemInterface]
 }
 
 type BillingCartAddress implements CartAddressInterface {

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Guest/GetAvailableShippingMethodsTest.php

@@ -73,6 +73,9 @@ public function testGetAvailableShippingMethods()
             $expectedAddressData,
             $response['cart']['shipping_addresses'][0]['available_shipping_methods'][0]
         );
+        self::assertCount(1, $response['cart']['shipping_addresses'][0]['cart_items']);
+        self::assertCount(1, $response['cart']['shipping_addresses'][0]['cart_items_v2']);
+        self::assertEquals('simple_product', $response['cart']['shipping_addresses'][0]['cart_items_v2'][0]['product']['sku']);
     }
 
     /**
@@ -137,6 +140,10 @@ private function getQuery(string $maskedQuoteId): string
   cart (cart_id: "{$maskedQuoteId}") {
     shipping_addresses {
       cart_items {
+        cart_item_id
+        quantity
+      }
+      cart_items_v2 {
         id
         quantity
         product {