ACP2E-3774: Concurrent Calls to Reorder GraphQL API - Same Products Added to Different Rows

- add test

Author: o-dubovyk

app/code/Magento/SalesGraphQl/Test/Unit/Model/Resolver/ReorderTest.php

@@ -0,0 +1,124 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesGraphQl\Test\Unit\Model\Resolver;
+
+use Magento\Framework\Lock\LockManagerInterface;
+use Magento\GraphQl\Model\Query\Context;
+use Magento\GraphQl\Model\Query\ContextExtension;
+use Magento\Sales\Model\OrderFactory;
+use Magento\Sales\Model\Reorder\Reorder;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Magento\SalesGraphQl\Model\Resolver\Reorder as Subject;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+
+class ReorderTest extends TestCase
+{
+    /**
+     * @var Subject|MockObject
+     */
+    private $subject;
+
+    /**
+     * @var ContextExtension|MockObject
+     */
+    private $extensionAttributesMock;
+
+    /**
+     * @var Context|MockObject
+     */
+    private $contextMock;
+
+    /**
+     * @var OrderFactory|MockObject
+     */
+    private $orderFactory;
+
+    /**
+     * @var LockManagerInterface|MockObject
+     */
+    private $lockManager;
+
+    /**
+     * @var Reorder|MockObject
+     */
+    private $reorder;
+
+    protected function setUp(): void
+    {
+        $this->reorder = $this->createMock(Reorder::class);
+        $this->orderFactory = $this->createMock(OrderFactory::class);
+        $this->lockManager = $this->createMock(LockManagerInterface::class);
+        $this->contextMock = $this->createMock(Context::class);
+
+        $this->subject = new Subject(
+            $this->reorder,
+            $this->orderFactory,
+            $this->lockManager
+        );
+    }
+
+    public function testResolve(): void
+    {
+        $contextCustomerId = 1;
+        $orderCustomerId = 1;
+        $fieldMock = $this->createMock(Field::class);
+        $resolveInfoMock = $this->createMock(ResolveInfo::class);
+        $args = ['orderNumber' => '00000010'];
+        $value = [];
+
+        $this->extensionAttributesMock = $this->getMockBuilder(ContextExtension::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->extensionAttributesMock->expects($this->once())
+            ->method('getIsCustomer')
+            ->willReturn(true);
+
+        $store = $this->createMock(\Magento\Store\Api\Data\StoreInterface::class);
+        $store->expects($this->once())
+            ->method('getId')
+            ->willReturn(1);
+        $this->extensionAttributesMock->expects($this->once())
+            ->method('getStore')
+            ->willReturn($store);
+
+        $this->contextMock->expects($this->exactly(2))
+            ->method('getExtensionAttributes')
+            ->willReturn($this->extensionAttributesMock);
+
+        $this->contextMock->expects($this->once())
+            ->method('getUserId')
+            ->willReturn($contextCustomerId);
+
+        $order = $this->createMock(\Magento\Sales\Model\Order::class);
+        $order->expects($this->once())
+            ->method('loadByIncrementIdAndStoreId')
+            ->willReturnSelf();
+        $order->expects($this->once())
+            ->method('getCustomerId')
+            ->willReturn($orderCustomerId);
+        $this->orderFactory->expects($this->once())
+            ->method('create')
+            ->willReturn($order);
+
+        $this->lockManager->expects($this->once())
+            ->method('lock')
+            ->willReturn(true);
+        $this->lockManager->expects($this->once())
+            ->method('unlock')
+            ->willReturn(true);
+
+        $result = $this->subject->resolve($fieldMock, $this->contextMock, $resolveInfoMock, $value, $args);
+
+        $this->assertIsArray($result);
+        $this->assertArrayHasKey('cart', $result);
+        $this->assertArrayHasKey('userInputErrors', $result);
+        $this->assertEmpty($result['userInputErrors']);
+    }
+}