From fa42dcdce2be6a9e3784a6f55921b417fc9988e2 Mon Sep 17 00:00:00 2001
From: jrootjunior <jroot.junior@gmail.com>
Date: Tue, 26 Nov 2019 11:25:44 +0200
Subject: [PATCH] Cover base filter

---
 aiogram/dispatcher/filters/base.py            |  3 +-
 .../test_dispatcher/test_filters/test_base.py | 30 +++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 tests/test_dispatcher/test_filters/test_base.py

diff --git a/aiogram/dispatcher/filters/base.py b/aiogram/dispatcher/filters/base.py
index ce7b007c..fabaaf21 100644
--- a/aiogram/dispatcher/filters/base.py
+++ b/aiogram/dispatcher/filters/base.py
@@ -17,5 +17,6 @@ class BaseFilter(ABC, BaseModel):
         async def __call__(self, *args: Any, **kwargs: Any) -> Union[bool, Dict[str, Any]]:
             pass
 
-    def __await__(self):
+    def __await__(self):  # pragma: no cover
+        # Is needed only for inspection and this method is never be called
         return self.__call__
diff --git a/tests/test_dispatcher/test_filters/test_base.py b/tests/test_dispatcher/test_filters/test_base.py
new file mode 100644
index 00000000..dd183fb5
--- /dev/null
+++ b/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")