magento2/app/code/Magento/Widget/Test/Unit/Model/Config/ConverterTest.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

namespace Magento\Widget\Test\Unit\Model\Config;

use Magento\Widget\Model\Config\Converter;
use PHPUnit\Framework\TestCase;

class ConverterTest extends TestCase
{
    /**
     * @var Converter
     */
    protected $_model;

    /** @var  array */
    protected $_targetArray;

    protected function setUp(): void
    {
        $this->_model = new Converter();
    }

    public function testConvert()
    {
        $dom = new \DOMDocument();
        $xmlFile = __DIR__ . '/../_files/widget.xml';
        $dom->loadXML(file_get_contents($xmlFile));

        $convertedFile = __DIR__ . '/../_files/widget_config.php';
        $expectedResult = include $convertedFile;
        $this->assertEquals($expectedResult, $this->_model->convert($dom), '');
    }
}