newsupernova/dev/tests/integration/testsuite/Magento/CatalogSearch/Controller/AjaxTest.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\CatalogSearch\Controller;

class AjaxTest extends \Magento\TestFramework\TestCase\AbstractController
{
    /**
     * @magentoDataFixture Magento/CatalogSearch/_files/query.php
     */
    public function testSuggestAction()
    {
        $this->getRequest()->setParam('q', 'query_text');
        $this->dispatch('catalogsearch/ajax/suggest');
        $this->assertContains('query_text', $this->getResponse()->getBody());
    }
}