AjaxInGroupTest.php

<?php

namespace Drupal\FunctionalJavascriptTests\Ajax;

use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

/**
 * Tests that form elements in groups work correctly with AJAX.
 *
 * @group Ajax
 */
class AjaxInGroupTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'ajax_forms_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->drupalLogin($this->drupalCreateUser([
            'access content',
        ]));
    }
    
    /**
     * Submits forms with select and checkbox elements via Ajax.
     */
    public function testSimpleAjaxFormValue() {
        $this->drupalGet('/ajax_forms_test_get_form');
        $assert_session = $this->assertSession();
        $assert_session->responseContains('Test group');
        $assert_session->responseContains('AJAX checkbox in a group');
        $session = $this->getSession();
        $checkbox_original = $session->getPage()
            ->findField('checkbox_in_group');
        $this->assertNotNull($checkbox_original, 'The checkbox_in_group is on the page.');
        $original_id = $checkbox_original->getAttribute('id');
        // Triggers an AJAX request/response.
        $checkbox_original->check();
        // The response contains a new nested "test group" form element, similar
        // to the one already in the DOM except for a change in the form build id.
        $checkbox_new = $assert_session->waitForElement('xpath', "//input[@name='checkbox_in_group' and not(@id='{$original_id}')]");
        $this->assertNotNull($checkbox_new, 'DOM update: clicking the checkbox refreshed the checkbox_in_group structure');
        $assert_session->responseContains('Test group');
        $assert_session->responseContains('AJAX checkbox in a group');
        $assert_session->responseContains('AJAX checkbox in a nested group');
        $assert_session->responseContains('Another AJAX checkbox in a nested group');
    }

}