class ConfigTranslationUiThemeTest

class ConfigTranslationUiThemeTest extends BrowserTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'config_translation',
    'config_translation_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Languages to enable.
   *
   * @var array
   */
  protected $langcodes = [
    'fr',
    'ta',
  ];
  
  /**
   * Administrator user for tests.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $adminUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $admin_permissions = [
      'administer themes',
      'administer languages',
      'administer site configuration',
      'translate configuration',
    ];
    // Create and log in user.
    $this->adminUser = $this->drupalCreateUser($admin_permissions);
    // Add languages.
    foreach ($this->langcodes as $langcode) {
      ConfigurableLanguage::createFromLangcode($langcode)->save();
    }
  }
  
  /**
   * Tests that theme provided *.config_translation.yml files are found.
   */
  public function testThemeDiscovery() {
    // Install the test theme and rebuild routes.
    $theme = 'config_translation_test_theme';
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('admin/appearance');
    $element = $this->assertSession()
      ->elementExists('xpath', "//a[normalize-space()='Install and set as default' and contains(@href, '{$theme}')]");
    $this->drupalGet($GLOBALS['base_root'] . $element->getAttribute('href'), [
      'external' => TRUE,
    ]);
    $translation_base_url = 'admin/config/development/performance/translate';
    $this->drupalGet($translation_base_url);
    $this->assertSession()
      ->statusCodeEquals(200);
    $this->assertSession()
      ->linkByHrefExists("{$translation_base_url}/fr/add");
  }

}