anchor.diff:        _checkEncoding<dynamic>(
           standard,
           new Uint8List(254),
  -        <int>[8, 254, 0, 254]..addAll(new List<int>.filled(254, 0)),
  +        <int>[8, 254, 254, 0]..addAll(new List<int>.filled(254, 0)),
         );
         _checkEncoding<dynamic>(
           standard,
  
positive.code:       _checkEncoding<dynamic>(
          standard,
          0x7fffffffffffffff,
          <int>[4, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff],
        );
        _checkEncoding<dynamic>(
          standard,
  
negative.code:       _checkEncoding<dynamic>(
          standard,
          new Uint8List(0xffff + 1),
          <int>[8, 255, 0, 0, 1, 0]..addAll(new List<int>.filled(0xffff + 1, 0)),
        );
      });
      test('should encode and decode simple messages', () {
  