AjaxWaitTest.php

<?php

declare (strict_types=1);
namespace Drupal\FunctionalJavascriptTests;


/**
 * Tests that unnecessary or untracked XHRs will cause a test failure.
 *
 * @group javascript
 * @group legacy
 */
class AjaxWaitTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'starterkit_theme';
    
    /**
     * Tests that an unnecessary wait triggers an error.
     */
    public function testUnnecessaryWait() : void {
        $this->drupalGet('user');
        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage('There are no AJAX requests to wait for.');
        $this->assertSession()
            ->assertWaitOnAjaxRequest(500);
    }
    
    /**
     * Tests that an untracked XHR triggers an error.
     */
    public function testUntrackedXhr() : void {
        $this->getSession()
            ->executeScript(<<<JS
let xhr = new XMLHttpRequest();
xhr.open('GET', '/foobar');
xhr.send();
JS
);
        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage('0 XHR requests through jQuery, but 1 observed in the browser — this requires js_testing_ajax_request_test.js to be updated.');
        $this->assertSession()
            ->assertExpectedAjaxRequest(1, 500);
    }

}