class LanguageSelectorTranslatableTest

class LanguageSelectorTranslatableTest extends BrowserTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = [
    'language',
    'content_translation',
    'node',
    'comment',
    'field_ui',
    'entity_test',
    'locale',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * The user with administrator privileges.
   *
   * @var \Drupal\user\Entity\User
   */
  public $administrator;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();
    // Create user and set permissions.
    $this->administrator = $this->drupalCreateUser($this->getAdministratorPermissions(), 'administrator');
    $this->drupalLogin($this->administrator);
  }
  
  /**
   * Returns an array of permissions needed for the translator.
   */
  protected function getAdministratorPermissions() {
    return array_filter([
      'translate interface',
      'administer content translation',
      'create content translations',
      'update content translations',
      'delete content translations',
      'administer languages',
    ]);
  }
  
  /**
   * Tests content translation language selectors are correctly translated.
   */
  public function testLanguageStringSelector() {
    // Add another language.
    $edit = [
      'predefined_langcode' => 'es',
    ];
    $this->drupalPostForm('admin/config/regional/language/add', $edit, t('Add language'));
    // Translate the string English in Spanish (Inglés). Override config entity.
    $name_translation = 'Inglés';
    \Drupal::languageManager()->getLanguageConfigOverride('es', 'language.entity.en')
      ->set('label', $name_translation)
      ->save();
    // Check content translation overview selector.
    $path = 'es/admin/config/regional/content-language';
    $this->drupalGet($path);
    // Get en language from selector.
    $elements = $this->xpath('//select[@id=:id]//option[@value=:option]', [
      ':id' => 'edit-settings-user-user-settings-language-langcode',
      ':option' => 'en',
    ]);
    // Check that the language text is translated.
    $this->assertEqual($elements[0]->getText(), $name_translation, 'Checking the option string English is translated to Spanish.');
  }

}