ACP2E-3211: Duplicated items in cart

Author: bubasuma

app/code/Magento/Checkout/etc/di.xml

@@ -68,7 +68,7 @@
     </type>
     <type name="Magento\Checkout\Model\AddProductToCart">
         <arguments>
-            <argument name="quoteMutex" xsi:type="object">Magento\Quote\Model\LoadQuoteByIdMutex</argument>
+            <argument name="quoteMutex" xsi:type="object">Magento\Quote\Model\ResourceModel\LoadQuoteByIdMutex</argument>
         </arguments>
     </type>
 </config>

app/code/Magento/Quote/Model/LoadQuoteByIdMutex.php renamed to app/code/Magento/Quote/Model/ResourceModel/LoadQuoteByIdMutex.php

@@ -5,8 +5,10 @@
  */
 declare(strict_types=1);
 
-namespace Magento\Quote\Model;
+namespace Magento\Quote\Model\ResourceModel;
 
+use Magento\Quote\Model\QuoteFactory;
+use Magento\Quote\Model\QuoteMutexInterface;
 use Magento\Quote\Model\ResourceModel\Quote as QuoteResourceModel;
 
 class LoadQuoteByIdMutex implements QuoteMutexInterface

app/code/Magento/Quote/Test/Unit/Model/LoadQuoteByIdMutexTest.php renamed to app/code/Magento/Quote/Test/Unit/Model/ResourceModel/LoadQuoteByIdMutexTest.php

@@ -5,17 +5,17 @@
  */
 declare(strict_types=1);
 
-namespace Magento\Quote\Test\Unit\Model;
+namespace Magento\Quote\Test\Unit\Model\ResourceModel;
 
 use Exception;
 use InvalidArgumentException;
 use Magento\Framework\DB\Adapter\AdapterInterface;
 use Magento\Framework\DB\Select;
 use Magento\Framework\Serialize\SerializerInterface;
-use Magento\Quote\Model\LoadQuoteByIdMutex;
 use Magento\Quote\Model\Quote;
-use Magento\Quote\Model\ResourceModel\Quote as QuoteResourceModel;
 use Magento\Quote\Model\QuoteFactory;
+use Magento\Quote\Model\ResourceModel\LoadQuoteByIdMutex;
+use Magento\Quote\Model\ResourceModel\Quote as QuoteResourceModel;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;