新增读取用户与其单元测试

models/user.py

@@ -107,4 +107,39 @@ class User(BaseModel, table=True):
             except Exception as e:
                 await session.rollback()
                 raise e
+        return user
+    
+    async def get(
+        id: int = None,
+        email: str = None
+    ) -> Optional["User"]:
+        """
+        获取用户信息。
+        
+        :param id: 用户ID，默认为 None
+        :type id: int
+        :param email: 用户邮箱，默认为 None
+        :type email: str
+        :return: 用户对象或 None
+        :rtype: Optional[User]
+        """
+        
+        from .database import get_session
+        from sqlmodel import select
+        
+        session = get_session()
+        
+        if id is None and email is None:
+            return None
+        
+        async for session in get_session():
+            query = select(User)
+            if id is not None:
+                query = query.where(User.id == id)
+            if email is not None:
+                query = query.where(User.email == email)
+            
+            result = await session.exec(query)
+            user = result.one_or_none()
+        
         return user