anchor.diff:        final List<dynamic> slist = slistener.stack.walk();
         expect(slist.length, 1);
         expect(slist[0], 1000000000000);
  -
       });
   
       test('18446744073709551615', () {
  
positive.code:       decoder.run();
        final List<dynamic> slist = slistener.stack.walk();
        expect(slist.length, 1);
        expect(slist[0], {"a": 1, "b": [2, 3]});
      });
  
      test('{"a", {"b": "c"}', () {
        output.clear();
        listener.clear();
        final List<int> values = [0xa2, 0x61, 0x61, 0xa1, 0x61, 0x62, 0x61, 0x63];
        final typed.Uint8Buffer buffer = new typed.Uint8Buffer();
        buffer.addAll(values);
        output.putBytes(buffer);
  
negative.code:       expect(slist[0], "http://www.example.com");
        final cbor.DartItem item = slistener.stack.peek();
        expect(item.hint, cbor.dataHints.uri);
      });
  
      test('Empty single quotes', () {
  