/**
  * @param TestSuite $testSuite
  * @param $file
  */
 public function save(TestSuite $testSuite, $file)
 {
     $close = false;
     if (!is_resource($file)) {
         $file = fopen($file, 'w');
         $close = true;
     }
     fwrite($file, "<?xml version=\"1.0\" ?>\n");
     fwrite($file, "<testsuites>\n");
     fwrite($file, (string) $testSuite->toXml());
     fwrite($file, "</testsuites>");
     if ($close) {
         fclose($file);
     }
 }