anchor.diff:        String uncaughtError) {
       // Print each test's result.
       for (final t in _tests) {
  -      print('${t.result.toUpperCase()}: ${t.description}');
  +      var resultString = "${t.result}".toUpperCase();
  +      print('$resultString: ${t.description}');
   
         if (t.message != '') {
           print(_indent(t.message));
  
positive.code: 
      if (success) {
        _postMessage('unittest-suite-success');
      } else {
        throw new Exception('Some tests failed.');
      }
  
negative.code:  */
  
  class Configuration {
    // The VM won't shut down if a receive port is open. Use this to make sure
    // we correctly wait for asynchronous tests.
    ReceivePort _receivePort;
    TestCase currentTestCase = null;
  
    /**
  