SettingsFormTest.php

<?php

namespace Drupal\Tests\media_library\Functional;

use Drupal\Tests\BrowserTestBase;

/**
 * Tests the Media Library settings form.
 *
 * @coversDefaultClass \Drupal\media_library\Form\SettingsForm
 * @group media_library
 */
class SettingsFormTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'media_library',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests the Media Library settings form.
   */
  public function testSettingsForm() {
    $account = $this->drupalCreateUser([
      'access administration pages',
      'administer media',
    ]);
    $this->drupalLogin($account);
    $page = $this->getSession()
      ->getPage();
    $assert_session = $this->assertSession();
    $this->drupalGet('/admin/config');
    $page->clickLink('Media Library settings');
    $page->checkField('Enable advanced UI');
    $page->pressButton('Save configuration');
    $assert_session->checkboxChecked('Enable advanced UI');
    $page->uncheckField('Enable advanced UI');
    $page->pressButton('Save configuration');
    $assert_session->checkboxNotChecked('Enable advanced UI');
  }

}