新增读取用户与其单元测试

models/user.py

@@ -108,3 +108,38 @@ class User(BaseModel, table=True):
                 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

tests/test_db_user.py

@@ -27,3 +27,13 @@ async def test_user_curd():
     assert created_user.email == 'test_user'
     assert created_user.password == 'test_password'
     assert created_user.group_id == created_group.id
+    
+    # 测试查 Read
+    fetched_user = await User.get(id=created_user.id)
+    
+    assert fetched_user is not None
+    assert fetched_user.email == 'test_user'
+    assert fetched_user.password == 'test_password'
+    assert fetched_user.group_id == created_group.id
+    
+    # 测试改 Update