anchor.diff:        expect(listener.lastValue.toString(), "[1, 0, 0, 0, 0, 0, 0, 0, 0]");
       });
   
  -    test('minus 18446744073709551616', () {
  +    test('-18446744073709551616', () {
         final cbor.OutputDynamic output = new cbor.OutputDynamic();
         final List<int> values = [
           0x3b,
  
positive.code: 
  void main() {
    group('Original C++ tests', () {
      test('Encode/Decode confidence', () {
        // Encoding
        final cbor.OutputDynamic output = new cbor.OutputDynamic();
        final cbor.Encoder encoder = new cbor.Encoder(output);
  
negative.code:     });
    });
  
    group('RFC Diagnostics decoder tests -> ', () {
      test('0', () {
        final cbor.OutputDynamic output = new cbor.OutputDynamic();
        final List<int> values = [0x0];
  