🆕 Add new JSON dataclass test file

json_tests/json_dataclass_test.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+import json
+from dataclasses import dataclass, asdict
+
+
+@dataclass
+class User:
+    name: str
+    age: int
+
+
+if __name__ == '__main__':
+    user = User(name="张三", age=25)
+    # 1. 先转成字典
+    user_dict = asdict(user)  # 结果: {'name': '张三', 'age': 25}
+    # 2. 再转成 JSON 字符串
+    json_str = json.dumps(user_dict, ensure_ascii=False)
+    print(json_str)  # 输出: {"name": "张三", "age": 25}
+
+    data_dict = json.loads(json_str)
+    user2 = User(**data_dict)
+    print(user2)  # 输出: User(name='张三', age=25)