class LocaleFileSystemFormTest

class LocaleFileSystemFormTest extends BrowserTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'system',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $account = $this->drupalCreateUser([
      'administer site configuration',
    ]);
    $this->drupalLogin($account);
  }
  
  /**
   * Tests translation directory settings on the file settings form.
   */
  public function testFileConfigurationPage() {
    // By default there should be no setting for the translation directory.
    $this->drupalGet('admin/config/media/file-system');
    $this->assertSession()
      ->fieldNotExists('translation_path');
    // With locale module installed, the setting should appear.
    $module_installer = $this->container
      ->get('module_installer');
    $module_installer->install([
      'locale',
    ]);
    $this->rebuildContainer();
    $this->drupalGet('admin/config/media/file-system');
    $this->assertSession()
      ->fieldExists('translation_path');
    // The setting should persist.
    $translation_path = $this->publicFilesDirectory . '/translations_changed';
    $fields = [
      'translation_path' => $translation_path,
    ];
    $this->submitForm($fields, 'Save configuration');
    $this->drupalGet('admin/config/media/file-system');
    $this->assertSession()
      ->fieldValueEquals('translation_path', $translation_path);
    $this->assertEquals($this->config('locale.settings')
      ->get('translation.path'), $translation_path);
  }

}