Add tests for content types

tests/test_dispatcher/test_event/test_observer.py

@@ -3,6 +3,7 @@ import functools
 from typing import Any, Awaitable, Callable, Dict, NoReturn, Union
 
 import pytest
+
 from aiogram.api.types import Chat, Message, User
 from aiogram.dispatcher.event.handler import HandlerObject
 from aiogram.dispatcher.event.observer import EventObserver, SkipHandler, TelegramEventObserver

tests/test_dispatcher/test_filters/test_content_types.py

@@ -0,0 +1,24 @@
+import pytest
+from pydantic import ValidationError
+
+from aiogram.dispatcher.filters import ContentTypesFilter
+
+
+class TestContentTypesFilter:
+    def test_validator_empty(self):
+        filter_ = ContentTypesFilter()
+        assert filter_.content_types == ["text"]
+
+    def test_validator_empty_list(self):
+        filter_ = ContentTypesFilter(content_types=[])
+        assert filter_.content_types == ["text"]
+
+    @pytest.mark.parametrize("values", [["text", "photo"], ["sticker"]])
+    def test_validator_with_values(self, values):
+        filter_ = ContentTypesFilter(content_types=values)
+        assert filter_.content_types == values
+
+    @pytest.mark.parametrize("values", [["test"], ["text", "test"], ["TEXT"]])
+    def test_validator_with_bad_values(self, values):
+        with pytest.raises(ValidationError):
+            ContentTypesFilter(content_types=values)