diff --git a/nonebot/drivers/quart.py b/nonebot/drivers/quart.py
index 3920cf13..ac8063d7 100644
--- a/nonebot/drivers/quart.py
+++ b/nonebot/drivers/quart.py
@@ -9,6 +9,7 @@ Quart 驱动适配
 """
 
 import asyncio
+from dataclasses import dataclass
 from typing import List, TypeVar, Callable, Coroutine, Optional
 
 import uvicorn
@@ -231,6 +232,7 @@ class Driver(ReverseDriver):
             self._bot_disconnect(bot)
 
 
+@dataclass
 class WebSocket(BaseWebSocket):
     websocket: QuartWebSocket = None  # type: ignore
 
diff --git a/nonebot/plugins/single_session.py b/nonebot/plugins/single_session.py
index 42df70d7..5124f7cb 100644
--- a/nonebot/plugins/single_session.py
+++ b/nonebot/plugins/single_session.py
@@ -9,7 +9,7 @@ _running_matcher: Dict[str, int] = {}
 
 
 @run_preprocessor
-async def _(matcher: Matcher, bot: Bot, event: Event, state: T_State):
+async def preprocess(matcher: Matcher, bot: Bot, event: Event, state: T_State):
     try:
         session_id = event.get_session_id()
     except Exception:
@@ -23,7 +23,8 @@ async def _(matcher: Matcher, bot: Bot, event: Event, state: T_State):
 
 
 @run_postprocessor
-async def _(matcher: Matcher, exception: Optional[Exception], bot: Bot, event: Event, state: T_State):
+async def postprocess(matcher: Matcher, exception: Optional[Exception],
+                      bot: Bot, event: Event, state: T_State):
     try:
         session_id = event.get_session_id()
     except Exception:
diff --git a/tests/test_plugins/test_package/test_command.py b/tests/test_plugins/test_package/test_command.py
index 3b77fb5e..9ffa3fbf 100644
--- a/tests/test_plugins/test_package/test_command.py
+++ b/tests/test_plugins/test_package/test_command.py
@@ -7,7 +7,7 @@ test_command = on_command("帮助", to_me())
 
 
 @test_command.handle()
-async def test_handler(bot: Bot, event: Event, state: T_State):
+async def test_handler1(bot: Bot, event: Event, state: T_State):
     args = str(event.get_message()).strip()
     print("[!] Command:", state["_prefix"], "Args:", args)
     if args:
@@ -17,7 +17,7 @@ async def test_handler(bot: Bot, event: Event, state: T_State):
 
 
 @test_command.got("help", prompt="你要帮助的命令是？")
-async def test_handler(bot: Bot, event: Event, state: T_State):
+async def test_handler2(bot: Bot, event: Event, state: T_State):
     print("[!] Command 帮助:", state["help"])
     if state["help"] not in ["test1", "test2"]:
         await test_command.reject(f"{state['help']} 不支持，请重新输入！")
diff --git a/tests/test_plugins/test_permission.py b/tests/test_plugins/test_permission.py
index a7157dff..1f8b71d6 100644
--- a/tests/test_plugins/test_permission.py
+++ b/tests/test_plugins/test_permission.py
@@ -9,10 +9,10 @@ test_command = on_startswith("hello", to_me(), permission=SUPERUSER)
 
 
 @test_command.handle()
-async def test_handler(bot: CQHTTPBot):
+async def test_handler1(bot: CQHTTPBot):
     await test_command.finish("cqhttp hello")
 
 
 @test_command.handle()
-async def test_handler(bot: DingBot):
+async def test_handler2(bot: DingBot):
     await test_command.finish("ding hello")