MC-36897: [GraphQl] Issues with updating wishlist quantity. Adding Recommended Store config changes

- added tests to cover bugs

Author: dthampy

dev/tests/api-functional/testsuite/Magento/GraphQl/Wishlist/UpdateProductsFromWishlistTest.php

@@ -57,6 +57,57 @@ public function testUpdateSimpleProductFromWishlist(): void
         self::assertEquals($description, $wishlistResponse['items'][0]['description']);
     }
 
+    /**
+     * update the wishlist by setting an qty = 0
+     *
+     * @magentoConfigFixture default_store wishlist/general/active 1
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     * @magentoApiDataFixture Magento/Wishlist/_files/wishlist_with_simple_product.php
+     */
+    public function testUpdateProductInWishlistWithZeroQty()
+    {
+        $wishlist = $this->getWishlist();
+        $wishlistId = $wishlist['customer']['wishlist']['id'];
+        $wishlistItem = $wishlist['customer']['wishlist']['items'][0];
+        $qty = 0;
+        $description = 'Description for zero quantity';
+        $updateWishlistQuery = $this->getQuery((int) $wishlistId, (int) $wishlistItem['id'], $qty, $description);
+        $response = $this->graphQlMutation($updateWishlistQuery, [], '', $this->getHeaderMap());
+        self::assertEquals(1, $response['updateProductsInWishlist']['wishlist']['items_count']);
+        self::assertNotEmpty($response['updateProductsInWishlist']['wishlist']['items'], 'empty wish list items');
+        self::assertCount(1, $response['updateProductsInWishlist']['wishlist']['items']);
+        self::assertArrayHasKey('user_errors', $response['updateProductsInWishlist']);
+        self::assertCount(1, $response['updateProductsInWishlist']['user_errors']);
+        $message = 'The quantity of a wish list item cannot be 0';
+        self::assertEquals(
+            $message,
+            $response['updateProductsInWishlist']['user_errors'][0]['message']
+        );
+    }
+
+    /**
+     * update the wishlist by setting qty to a valid value and no description
+     *
+     * @magentoConfigFixture default_store wishlist/general/active 1
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     * @magentoApiDataFixture Magento/Wishlist/_files/wishlist_with_simple_product.php
+     */
+    public function testUpdateProductWithValidQtyAndNoDescription()
+    {
+        $wishlist = $this->getWishlist();
+        $wishlistId = $wishlist['customer']['wishlist']['id'];
+        $wishlistItem = $wishlist['customer']['wishlist']['items'][0];
+        $qty = 2;
+        $updateWishlistQuery = $this->getQueryWithNoDescription((int) $wishlistId, (int) $wishlistItem['id'], $qty);
+        $response = $this->graphQlMutation($updateWishlistQuery, [], '', $this->getHeaderMap());
+        self::assertEquals(1, $response['updateProductsInWishlist']['wishlist']['items_count']);
+        self::assertNotEmpty($response['updateProductsInWishlist']['wishlist']['items'], 'empty wish list items');
+        self::assertCount(1, $response['updateProductsInWishlist']['wishlist']['items']);
+        $itemsInWishlist = $response['updateProductsInWishlist']['wishlist']['items'][0];
+        self::assertEquals($qty, $itemsInWishlist['qty']);
+        self::assertEquals('simple-1', $itemsInWishlist['product']['sku']);
+    }
+
     /**
      * Authentication header map
      *
@@ -121,6 +172,51 @@ private function getQuery(
 MUTATION;
     }
 
+    /**
+     * Returns GraphQl mutation string
+     *
+     * @param int $wishlistId
+     * @param int $wishlistItemId
+     * @param int $qty
+     *
+     * @return string
+     */
+    private function getQueryWithNoDescription(
+        int $wishlistId,
+        int $wishlistItemId,
+        int $qty
+    ): string {
+        return <<<MUTATION
+mutation {
+  updateProductsInWishlist(
+    wishlistId: {$wishlistId},
+    wishlistItems: [
+      {
+        wishlist_item_id: "{$wishlistItemId}"
+        quantity: {$qty}
+
+      }
+    ]
+) {
+    user_errors {
+      code
+      message
+    }
+    wishlist {
+      id
+      sharing_code
+      items_count
+      items {
+        id
+        qty
+        product{sku name}
+      }
+    }
+  }
+}
+MUTATION;
+    }
+
     /**
      * Get wishlist result
      *