AdminAjaxTest.php

<?php

namespace Drupal\Tests\views_ui\FunctionalJavascript;

use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

/**
 * Tests the admin UI AJAX interactions.
 *
 * @group views_ui
 */
class AdminAjaxTest extends WebDriverTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'views_ui',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'views_test_classy_subtheme';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->drupalLogin($this->createUser([
      'administer views',
    ]));
  }
  
  /**
   * Confirms that form_alter is triggered after AJAX rebuilds.
   */
  public function testAjaxRebuild() {
    \Drupal::service('theme_installer')->install([
      'views_test_classy_subtheme',
    ]);
    $this->config('system.theme')
      ->set('default', 'views_test_classy_subtheme')
      ->save();
    $page = $this->getSession()
      ->getPage();
    $assert_session = $this->assertSession();
    $this->drupalGet('admin/structure/views/view/user_admin_people');
    $assert_session->pageTextContains('This is text added to the display tabs at the top');
    $assert_session->pageTextContains('This is text added to the display edit form');
    $page->clickLink('User: Name (Username)');
    $assert_session->waitForElementVisible('css', '.views-ui-dialog');
    $page->fillField('Label', 'New Title');
    $page->find('css', '.ui-dialog-buttonset button:contains("Apply")')
      ->press();
    $assert_session->waitForElementRemoved('css', '.views-ui-dialog');
    $assert_session->pageTextContains('This is text added to the display tabs at the top');
    $assert_session->pageTextContains('This is text added to the display edit form');
  }

}