Update product stock fixture

Author: sumesh-GL

app/code/Magento/Catalog/Test/Fixture/ProductStock.php

@@ -1,9 +1,25 @@
 <?php
+/**
+ * Copyright 2023 Adobe
+ * All Rights Reserved.
+ *
+ * NOTICE: All information contained herein is, and remains
+ * the property of Adobe and its suppliers, if any. The intellectual
+ * and technical concepts contained herein are proprietary to Adobe
+ * and its suppliers and are protected by all applicable intellectual
+ * property laws, including trade secret and copyright laws.
+ * Dissemination of this information or reproduction of this material
+ * is strictly forbidden unless prior written permission is obtained from
+ * Adobe.
+ */
+declare(strict_types=1);
+
 namespace Magento\Catalog\Test\Fixture;
 
 use Magento\CatalogInventory\Api\StockRegistryInterface;
 use Magento\Framework\DataObject;
 use Magento\Framework\DataObjectFactory;
+use Magento\TestFramework\Fixture\Api\DataMerger;
 use Magento\TestFramework\Fixture\DataFixtureInterface;
 
 class ProductStock implements DataFixtureInterface
@@ -23,24 +39,33 @@ class ProductStock implements DataFixtureInterface
      */
     protected StockRegistryInterface $stockRegistry;
 
+    /**
+     * @var DataMerger
+     */
+    protected DataMerger $dataMerger;
+
     /**
      * @param DataObjectFactory $dataObjectFactory
      * @param StockRegistryInterface $stockRegistry
+     * @param DataMerger $dataMerger
      */
     public function __construct(
         DataObjectFactory $dataObjectFactory,
-        StockRegistryInterface $stockRegistry
+        StockRegistryInterface $stockRegistry,
+        DataMerger $dataMerger
     ) {
         $this->dataObjectFactory = $dataObjectFactory;
         $this->stockRegistry = $stockRegistry;
+        $this->dataMerger = $dataMerger;
     }
 
     /**
      * {@inheritdoc}
-     * @param array $data Parameters. Same format as ReduceProductStock::DEFAULT_DATA
+     * @param array $data Parameters. Same format as ProductStock::DEFAULT_DATA
      */
     public function apply(array $data = []): ?DataObject
     {
+        $data = $this->dataMerger->merge(self::DEFAULT_DATA, $data);
         $stockItem = $this->stockRegistry->getStockItem($data['prod_id']);
         $stockItem->setData('is_in_stock', 1);
         $stockItem->setData('qty', 90);

app/code/Magento/QuoteGraphQl/Model/CartItem/ProductStock.php

@@ -53,7 +53,7 @@ public function __construct(
      * @param Item $cartItem
      * @return bool
      */
-    public function getProductAvailability($cartItem):bool
+    public function getProductAvailability($cartItem): bool
     {
         $requestedQty = 0;
         $previousQty = 0;
@@ -74,14 +74,14 @@ public function getProductAvailability($cartItem):bool
                 if ($totalRequestedQty) {
                     $requiredItemQty = $requiredItemQty * $totalRequestedQty;
                 }
-                if ($this->isStockAvailable($productId, $requiredItemQty)) {
+                if (!$this->isStockAvailable($productId, $requiredItemQty)) {
                     return false;
                 }
             }
         } else {
             $requiredItemQty =  $requestedQty + $previousQty;
             $productId = (int) $cartItem->getProduct()->getId();
-            if ($this->isStockAvailable($productId, $requiredItemQty)) {
+            if (!$this->isStockAvailable($productId, $requiredItemQty)) {
                 return false;
             }
         }
@@ -98,6 +98,6 @@ public function getProductAvailability($cartItem):bool
     private function isStockAvailable(int $productId, float $requiredQuantity): bool
     {
         $stock = $this->stockStatusRepository->get($productId);
-        return ($stock->getQty() < $requiredQuantity) ? true : false;
+        return $stock->getQty() >= $requiredQuantity;
     }
 }