AC-14682: Unable to clear wishlist item comment via updateProductsInWishlist GraphQL mutation

Test coverage for clearing wishlist description

Author: sumesh-GL

app/code/Magento/WishlistGraphQl/Model/UpdateWishlistItem.php

@@ -78,7 +78,7 @@ public function execute(WishlistItemData $wishlistItemData, Wishlist $wishlist)
 
             $wishlistItemToUpdate->setOptions($updatedOptions);
             $wishlistItemToUpdate->setQty($wishlistItemData->getQuantity());
-            $wishlistItemToUpdate->setDescription($wishlistItemData->getDescription());
+            $wishlistItemToUpdate->setDescription($wishlistItemData->getDescription() ?: "");
 
             $this->wishlistResource->save($wishlist);
         }

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

@@ -8,10 +8,17 @@
 namespace Magento\GraphQl\Wishlist;
 
 use Exception;
+use Magento\Catalog\Test\Fixture\Product as ProductFixture;
+use Magento\Customer\Test\Fixture\Customer as CustomerFixture;
 use Magento\Framework\Exception\AuthenticationException;
 use Magento\Integration\Api\CustomerTokenServiceInterface;
+use Magento\TestFramework\Fixture\Config;
+use Magento\TestFramework\Fixture\DataFixture;
+use Magento\TestFramework\Fixture\DataFixtureStorage;
+use Magento\TestFramework\Fixture\DataFixtureStorageManager;
 use Magento\TestFramework\Helper\Bootstrap;
 use Magento\TestFramework\TestCase\GraphQlAbstract;
+use Magento\Wishlist\Test\Fixture\AddProductToWishlist as AddProductToWishlistFixture;
 
 /**
  * Test coverage for updating a product from wishlist
@@ -23,12 +30,18 @@ class UpdateProductsFromWishlistTest extends GraphQlAbstract
      */
     private $customerTokenService;
 
+    /**
+     * @var DataFixtureStorage
+     */
+    private $fixtures;
+
     /**
      * Set Up
      */
     protected function setUp(): void
     {
         $objectManager = Bootstrap::getObjectManager();
+        $this->fixtures = $objectManager->get(DataFixtureStorageManager::class)->getStorage();
         $this->customerTokenService = $objectManager->get(CustomerTokenServiceInterface::class);
     }
 
@@ -145,6 +158,48 @@ public function testUpdateProductWithValidQtyAndNoDescription()
         self::assertEquals('simple-1', $itemsInWishlist['product']['sku']);
     }
 
+    #[
+      Config('wishlist/general/active', true),
+      DataFixture(ProductFixture::class, as: 'product'),
+      DataFixture(CustomerFixture::class, as: 'customer'),
+      DataFixture(AddProductToWishlistFixture::class, [
+          'customer_id' => '$customer.id$',
+          'product_ids' => [
+              '$product.id$'
+          ],
+          'name' => 'Test Wish List',
+      ], as: 'wishlist')
+  ]
+  public function testClearWishlistDescription(): void
+  {
+    $customerEmail = $this->fixtures->get('customer')->getEmail();
+    $wishlist = $this->getWishlist($customerEmail);
+
+    $customerWishlist = $wishlist['customer']['wishlists'][0];
+    $wishlistId = $customerWishlist['id'];
+    $wishlistItem = $customerWishlist['items_v2']['items'][0];
+    $qty = 5;
+    $description = 'New Description';
+
+    $updateWishlistQuery = $this->getQuery($wishlistId, $wishlistItem['id'], $qty, $description);
+    $response = $this->graphQlMutation($updateWishlistQuery, [], '', $this->getHeaderMap($customerEmail));
+
+    $this->assertArrayHasKey('updateProductsInWishlist', $response);
+    $this->assertArrayHasKey('wishlist', $response['updateProductsInWishlist']);
+    $wishlistResponse = $response['updateProductsInWishlist']['wishlist'];
+    $this->assertEquals($qty, $wishlistResponse['items_v2']['items'][0]['quantity']);
+    $this->assertEquals($description, $wishlistResponse['items_v2']['items'][0]['description']);
+
+    $updateWishlistQueryNoDescription = $this->getQuery($wishlistId, $wishlistItem['id'], $qty, "");
+    $responseNoDescription = $this->graphQlMutation($updateWishlistQueryNoDescription, [], '', $this->getHeaderMap($customerEmail));
+
+    $this->assertArrayHasKey('updateProductsInWishlist', $responseNoDescription);
+    $this->assertArrayHasKey('wishlist', $responseNoDescription['updateProductsInWishlist']);
+    $wishlistResponseNoDescription = $responseNoDescription['updateProductsInWishlist']['wishlist'];
+    $this->assertEquals($qty, $wishlistResponseNoDescription['items_v2']['items'][0]['quantity']);
+    $this->assertEquals('', $wishlistResponseNoDescription['items_v2']['items'][0]['description']);
+  }
+
     /**
      * Authentication header map
      *