cakephp/tests/test_app/TestApp/Controller/TestConfigsController.php

<?php
/**
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 *
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @since         3.0.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace TestApp\Controller;

use Cake\Controller\ErrorController;

class TestConfigsController extends ErrorController {

	public $components = array(
		'RequestHandler' => array(
			'some' => 'config'
		)
	);

}