anchor.diff:      expect(Formatter.deserialize(Formatter.serialize("")), equals(""));
       expect(Formatter.deserialize(Formatter.serialize("c")), equals("c"));
       expect(Formatter.deserialize(Formatter.serialize("我")), equals("我"));
  -    expect(Formatter.deserialize(Formatter.serialize("我爱你")), equals('我爱你'));
  -    expect(Formatter.deserialize(Formatter.serialize("我爱五星红旗🇨🇳")),
  +    expect(Formatter.deserialize(Formatter.serialize("我爱你")),
  +        equals('我爱你'));
  +    expect(
  +        Formatter.deserialize(
  +            Formatter.serialize("我爱五星红旗🇨🇳")),
           equals('我爱五星红旗🇨🇳'));
       expect(Formatter.deserialize(Formatter.serialize([1, 2, 3, 4, 5])),
           equals([1, 2, 3, 4, 5]));
  
positive.code:     expect(utf8.decode(Formatter.serialize("")), equals("e"));
      expect(utf8.decode(Formatter.serialize("c")), equals("uc"));
      expect(utf8.decode(Formatter.serialize("我")), equals("u我"));
      expect(utf8.decode(Formatter.serialize("我爱你")), equals('s3"我爱你"'));
      expect(utf8.decode(Formatter.serialize("我爱五星红旗🇨🇳")),
          equals('s10"我爱五星红旗🇨🇳"'));
      expect(
  
negative.code:     List userList = [user, user2, user3];
      expect(
          utf8.decode(Formatter.serialize(
              Formatter.deserialize(Formatter.serialize(userList)))),
          equals(utf8.decode(Formatter.serialize(userList))));
      expect(
          Formatter.serialize(
  