MC-42443: Row Sub Total is not updated with new price when Price is updated through API

 - Fixed the CR comments.

Author: devarul

dev/tests/integration/testsuite/Magento/Quote/Model/Product/Plugin/UpdateQuoteTest.php

@@ -9,8 +9,11 @@
 
 use Magento\TestFramework\Helper\Bootstrap;
 use Magento\TestFramework\Quote\Model\GetQuoteByReservedOrderId;
+use Magento\Catalog\Api\ProductRepositoryInterface;
+use Magento\Quote\Api\Data\CartItemInterfaceFactory;
 use Magento\Catalog\Api\TierPriceStorageInterface;
 use Magento\Catalog\Api\Data\TierPriceInterfaceFactory;
+
 use PHPUnit\Framework\TestCase;
 
 /**
@@ -23,6 +26,12 @@ class UpdateQuoteTest extends TestCase
      */
     private $getQuoteByReservedOrderId;
 
+    /** @var ProductRepositoryInterface */
+    private $productRepository;
+
+    /** @var CartItemInterfaceFactory */
+    private $itemFactory;
+
     /**
      * @var TierPriceStorageInterface
      */
@@ -44,37 +53,49 @@ protected function setUp(): void
         $this->getQuoteByReservedOrderId = $objectManager->get(GetQuoteByReservedOrderId::class);
         $this->tierPriceStorage = $objectManager->get(TierPriceStorageInterface::class);
         $this->tierPriceFactory = $objectManager->get(TierPriceInterfaceFactory::class);
+        $this->itemFactory = $objectManager->get(CartItemInterfaceFactory::class);
+        $this->productRepository = $objectManager->get(ProductRepositoryInterface::class);
     }
 
     /**
      * Test to update the column trigger_recollect is 1 from quote table.
      *
-     * @magentoDataFixture Magento/Checkout/_files/quote_with_simple_product_saved.php
-     * @magentoDbIsolation disabled
+     * @magentoDataFixture Magento/Sales/_files/quote.php
+     * @magentoDataFixture Magento/Catalog/_files/product_simple.php
      * @return void
      */
     public function testUpdateQuoteRecollectAfterChangeProductPrice(): void
     {
-        $quoteId = 'test_order_with_simple_product_without_address';
+        $quoteId = 'test01';
+        $productSku = 'simple';
         $quote = $this->getQuoteByReservedOrderId->execute($quoteId);
-        $this->assertNotNull($quote);
-        $this->assertFalse((bool)$quote->getTriggerRecollect());
-        $this->assertNotEmpty($quote->getItems());
-        $quoteItem = current($quote->getItems());
-        $product = $quoteItem->getProduct();
+
+        $quoteItem = $this->itemFactory->create();
+
+        $product = $this->productRepository->get($productSku);
+
+        $quoteItem->setProduct($product);
         $quoteItem->setProductId($product->getRowId());
+
+        $quote->addItem($quoteItem);
+        $quote->setTriggerRecollect(0);
         $quote->save();
 
+        $this->assertNotNull($quote);
+        $this->assertFalse((bool)$quote->getTriggerRecollect());
+
         $tierPrice = $this->tierPriceFactory->create();
         $tierPrice->setPrice($product->getPrice());
         $tierPrice->setPriceType('fixed');
         $tierPrice->setWebsiteId(0);
         $tierPrice->setSku($product->getSku());
         $tierPrice->setCustomerGroup('ALL GROUPS');
         $tierPrice->setQuantity(1);
+
         $this->tierPriceStorage->update([$tierPrice]);
 
         $quote = $this->getQuoteByReservedOrderId->execute($quoteId);
+
         $this->assertNotEmpty($quote->getTriggerRecollect());
         $this->assertTrue((bool)$quote->getTriggerRecollect());
     }