Forum topic in FSM (#1161)

* Base implementation

* Added tests, fixed arguments priority

* Use `Optional[X]` instead of `X | None`

* Added changelog

* Added tests

tests/test_dispatcher/test_dispatcher.py

@@ -14,7 +14,7 @@ from aiogram import Bot
 from aiogram.dispatcher.dispatcher import Dispatcher
 from aiogram.dispatcher.event.bases import UNHANDLED, SkipHandler
 from aiogram.dispatcher.router import Router
-from aiogram.methods import GetMe, GetUpdates, Request, SendMessage, TelegramMethod
+from aiogram.methods import GetMe, GetUpdates, SendMessage, TelegramMethod
 from aiogram.types import (
     CallbackQuery,
     Chat,
@@ -462,9 +462,9 @@ class TestDispatcher:
         async def my_handler(event: Any, **kwargs: Any):
             assert event == getattr(update, event_type)
             if has_chat:
-                assert Chat.get_current(False)
+                assert kwargs["event_chat"]
             if has_user:
-                assert User.get_current(False)
+                assert kwargs["event_from_user"]
             return kwargs
 
         result = await router.feed_update(bot, update, test="PASS")

tests/test_dispatcher/test_middlewares/test_user_context.py

@@ -1,6 +1,9 @@
+from unittest.mock import patch
+
 import pytest
 
 from aiogram.dispatcher.middlewares.user_context import UserContextMiddleware
+from aiogram.types import Update
 
 
 async def next_handler(*args, **kwargs):
@@ -11,3 +14,13 @@ class TestUserContextMiddleware:
     async def test_unexpected_event_type(self):
         with pytest.raises(RuntimeError):
             await UserContextMiddleware()(next_handler, object(), {})
+
+    async def test_call(self):
+        middleware = UserContextMiddleware()
+        data = {}
+        with patch.object(UserContextMiddleware, "resolve_event_context", return_value=[1, 2, 3]):
+            await middleware(next_handler, Update(update_id=42), data)
+
+        assert data["event_chat"] == 1
+        assert data["event_from_user"] == 2
+        assert data["event_thread_id"] == 3