anchor.diff:  
         if (test < numTests) {
           // Start new test
  -        print("TEST $test STARTING");
  -        setupTest(test);
  +        PerformanceTest perfTest = createTest(test);
  +        addChild(perfTest);
  +
  +        print("TEST ${test + 1}/$numTests STARTING: ${perfTest.name}");
  +
           testStartTime = new DateTime.now().millisecondsSinceEpoch;
         }
         test++;
  
positive.code: 
  class TestPerformance extends NodeWithSize {
    final int numFramesPerTest = 100;
    final int numTests = 3;
  
    TestPerformance() : super(new Size(1024.0, 1024.0)) {
    }
  
negative.code:         int totalTestTime = currentTime - testStartTime;
          double millisPerFrame =
            totalTestTime.toDouble() / numFramesPerTest.toDouble();
          print("  - RESULT fps: ${(1.0 / (millisPerFrame / 1000)).toStringAsFixed(1)} millis/frame: ${millisPerFrame.round()}");
  
          // Clear test
          removeAllChildren();
  