MC-17251: Creating a preference for category product indexer breaks setup:di:compile

- Added integration test

Author: MorozovaNP

dev/tests/integration/framework/Magento/TestFramework/Catalog/Model/Indexer/Category/Product/Action/Full.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\TestFramework\Catalog\Model\Indexer\Category\Product\Action;
+
+use Magento\Catalog\Model\Indexer\Category\Product\Action\Full as OriginFull;
+
+/**
+ * Class Full reindex action
+ *
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
+class Full extends OriginFull
+{
+    //
+}

dev/tests/integration/testsuite/Magento/Catalog/Model/Indexer/Category/Product/Action/FullTest.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Catalog\Model\Indexer\Category\Product\Action;
+
+use Magento\Catalog\Model\Indexer\Category\Product\Action\Full as OriginObject;
+use Magento\TestFramework\Catalog\Model\Indexer\Category\Product\Action\Full as PreferenceObject;
+use Magento\Framework\Interception\PluginListInterface;
+
+/**
+ * Class FullTest
+ * @package Magento\Catalog\Model\Indexer\Category\Product\Action
+ */
+class FullTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var PreferenceObject
+     */
+    private $interceptor;
+
+    /**
+     * List of plugins
+     *
+     * @var PluginListInterface
+     */
+    private $pluginList;
+
+    /**
+     * Prepare data for test
+     */
+    protected function setUp()
+    {
+        $objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
+        $objectManager->configure(['preferences' => [OriginObject::class => PreferenceObject::class]]);
+        $this->interceptor = $objectManager->get(OriginObject::class);
+        $this->pluginList = $objectManager->get(PluginListInterface::class);
+    }
+
+    /**
+     * Test possibility to add object preference
+     */
+    public function testPreference()
+    {
+        $interceptorClassName = get_class($this->interceptor);
+
+        // Check interceptor class name
+        $this->assertEquals($interceptorClassName, PreferenceObject::class . '\Interceptor');
+
+        //check that there are no fatal errors
+        $this->pluginList->getNext($interceptorClassName, 'execute');
+    }
+}