public function tearDown()
 {
     try {
         $sys_data_dir_arg = escapeshellarg($GLOBALS['sys_data_dir']);
         $this->system_command->exec("sudo -u gitolite /usr/share/tuleap/plugins/git/bin/gl-delete-test-repository.sh {$sys_data_dir_arg}/gitolite/repositories/test_project");
     } catch (Exception $e) {
         //ignore errors
     }
     parent::tearDown();
     $GLOBALS['sys_data_dir'] = $this->old_sys_data_dir;
     ForgeConfig::restore();
     PermissionsManager::clearInstance();
     PluginManager::clearInstance();
     UserManager::clearInstance();
     unset($GLOBALS['tmp_dir']);
     //revert gitolite driver setAdminPath in its builder
     chdir($this->old_cwd);
 }