anchor.diff:  void _nextTestCase() {
     _defer(() {
       _currentTest++;
  -    _testRunner();
  +    _nextBatch();
     });
   }
   
  
positive.code: }
  
  /** Publish results on the page and notify controller. */
  _completeTests() {
    if (!_initialized) return;
    int passed = 0;
    int failed = 0;
  
negative.code: 
  /** Get the list of tests. */
  List<TestCase> get testCases => _tests;
  
  /** Setup function called before each test in a group */
  Function _testSetup;
  