class AddedStylesheetsTest

class AddedStylesheetsTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'node',
    'ckeditor5',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * The editor user.
   *
   * @var \Drupal\editor\Entity\Editor
   */
  protected $editor;
  
  /**
   * The admin user.
   *
   * @var \Drupal\user\Entity\User
   */
  protected $adminUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $filtered_html_format = FilterFormat::create([
      'format' => 'llama',
      'name' => 'Llama',
      'filters' => [],
      'roles' => [
        RoleInterface::AUTHENTICATED_ID,
      ],
    ]);
    $filtered_html_format->save();
    $this->editor = Editor::create([
      'format' => 'llama',
      'editor' => 'ckeditor5',
      'settings' => [
        'toolbar' => [
          'items' => [],
        ],
      ],
    ]);
    $this->editor
      ->save();
    $this->assertSame([], array_map(function (ConstraintViolation $v) {
      return (string) $v->getMessage();
    }, iterator_to_array(CKEditor5::validatePair($this->editor, $filtered_html_format))));
    // Create node type.
    $this->drupalCreateContentType([
      'type' => 'article',
      'name' => 'Article',
    ]);
    $this->adminUser = $this->drupalCreateUser([
      'create article content',
      'use text format llama',
      'administer themes',
      'view the administration theme',
      'administer filters',
    ]);
    $this->drupalLogin($this->adminUser);
  }
  
  /**
   * Test the ckeditor5-stylesheets theme config.
   */
  public function testCkeditorStylesheets() {
    $assert_session = $this->assertSession();
    /** @var \Drupal\Core\Extension\ThemeInstallerInterface $theme_installer */
    $theme_installer = \Drupal::service('theme_installer');
    $theme_installer->install([
      'test_ckeditor_stylesheets_relative',
      'claro',
    ]);
    $this->config('system.theme')
      ->set('admin', 'claro')
      ->save();
    $this->config('node.settings')
      ->set('use_admin_theme', TRUE)
      ->save();
    $this->drupalGet('node/add/article');
    $assert_session->responseNotContains('test_ckeditor_stylesheets_relative/css/yokotsoko.css');
    // Confirm that the missing ckeditor5-stylesheets configuration can be
    // bypassed.
    $this->drupalGet('admin/config/content/formats/manage/llama');
    $assert_session->pageTextNotContains('ckeditor_stylesheets configured without a corresponding ckeditor5-stylesheets configuration.');
    // Install a theme with ckeditor5-stylesheets configured. Do this manually
    // to confirm `library_info` cache tags are invalidated.
    $this->drupalGet('admin/appearance');
    $this->clickLink('Set Test relative CKEditor stylesheets as default theme');
    // Confirm the stylesheet added via `ckeditor5-stylesheets` is present.
    $this->drupalGet('node/add/article');
    $assert_session->responseContains('test_ckeditor_stylesheets_relative/css/yokotsoko.css');
    // Change the default theme to Stark, and confirm the stylesheet added via
    // `ckeditor5-stylesheets` is no longer present.
    $this->drupalGet('admin/appearance');
    $this->clickLink('Set Stark as default theme');
    $this->drupalGet('node/add/article');
    $assert_session->responseNotContains('test_ckeditor_stylesheets_relative/css/yokotsoko.css');
  }

}