protected function setUp() {
parent::setUp();
- require_once \Drupal::root() . '/core/includes/update.inc';
+ require_once $this->root . '/core/includes/update.inc';
$this->user = $this->drupalCreateUser(['administer software updates', 'access site in maintenance mode']);
$this->updateUrl = Url::fromRoute('system.db_update');
}