Cover base filter

tests/test_dispatcher/test_filters/test_base.py

@@ -0,0 +1,30 @@
+from typing import Awaitable
+from unittest.mock import patch
+
+import pytest
+from asynctest import CoroutineMock
+
+from aiogram.dispatcher.filters.base import BaseFilter
+
+
+class MyFilter(BaseFilter):
+    foo: str
+
+    async def __call__(self, event: str):
+        return
+
+
+class TestBaseFilter:
+    @pytest.mark.asyncio
+    async def test_awaitable(self):
+        my_filter = MyFilter(foo="bar")
+
+        assert isinstance(my_filter, Awaitable)
+
+        with patch(
+            "tests.test_dispatcher.test_filters.test_base.MyFilter.__call__",
+            new_callable=CoroutineMock,
+        ) as mocked_call:
+            call = my_filter(event="test")
+            await call
+            mocked_call.assert_awaited_with(event="test")