/**
 * Implements hook_registry_files_alter().
 */
function {{ machine_name }}_registry_files_alter(&$files, $modules) {
  foreach ($modules as $module) {
    // Only add test files for disabled modules, as enabled modules should
    // already include any test files they provide.
    if (!$module->status) {
      $dir = $module->dir;
      foreach ($module->info['files'] as $file) {
        if (substr($file, -5) == '.test') {
          $files["$dir/$file"] = array('module' => $module->name, 'weight' => $module->weight);
        }
      }
    }
  }
}