code: def test_stringify(self):
      i = V(W(10), ["l1", "l2"], (1, 2), 10)
      e = serialize(i)
      s = deserialize(e, full=False)
  
      assert f"{qualname(V)}@version={V.__version__}" in s
      # asdict from dataclasses removes class information
      assert "w={'x': 10}" in s
      assert "s=['l1', 'l2']" in s
      assert "t=(1,2)" in s
      assert "c=10" in s
      e["__data__"]["t"] = (1, 2)
  
      s = deserialize(e, full=False)
  
imports: from __future__ import annotations
  import datetime
  import enum
  from dataclasses import dataclass
  from importlib import import_module
  from typing import ClassVar
  import attr
  import pytest
  from pydantic import BaseModel
  from airflow.datasets import Dataset
  from airflow.serialization.serde import CLASSNAME, DATA, SCHEMA_ID, VERSION, _get_patterns, _match, deserialize, serialize
  from airflow.utils.module_loading import import_string, iter_namespace, qualname
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 18 for calling the TestSerDe obj's underlying member method code with example usage: obj.test_stringify() without return types