class ConfigTranslationInstallTest

class ConfigTranslationInstallTest extends InstallerTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $langcode = 'eo';
  
  /**
   * {@inheritdoc}
   */
  protected $profile = 'standard';
  
  /**
   * {@inheritdoc}
   */
  protected function setUpLanguage() {
    // Place custom local translations in the translations directory.
    mkdir(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations', 0777, TRUE);
    file_put_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations/drupal-8.0.0.eo.po', $this->getPo('eo'));
    parent::setUpLanguage();
    $this->translations['Save and continue'] = 'Save and continue eo';
  }
  
  /**
   * Returns the string for the test .po file.
   *
   * @param string $langcode
   *   The language code.
   *
   * @return string
   *   Contents for the test .po file.
   */
  protected function getPo($langcode) {
    return <<<ENDPO
    msgid ""
    msgstr ""
    
    msgid "Save and continue"
    msgstr "Save and continue {<span class="php-variable">$langcode</span>}"
    
    msgid "Anonymous"
    msgstr "Anonymous {<span class="php-variable">$langcode</span>}"
    
    msgid "Language"
    msgstr "Language {<span class="php-variable">$langcode</span>}"
    ENDPO;
  }
  public function testConfigTranslation() {
    $this->drupalGet('admin/config/regional/language/add');
    $this->submitForm([
      'predefined_langcode' => 'en',
    ], 'Add custom language');
    $this->drupalGet('admin/config/regional/language/add');
    $this->submitForm([
      'predefined_langcode' => 'fr',
    ], 'Add custom language');
    $edit = [
      'modules[config_translation][enable]' => TRUE,
    ];
    $this->drupalGet('admin/modules');
    $this->submitForm($edit, 'Install');
    $this->drupalGet('/admin/structure/types/manage/article/fields');
    $this->assertSession()
      ->statusCodeEquals(200);
  }

}