Implemented handler flags feature (#728)

* Implemented handler flag feature

* Cover tests

tests/test_dispatcher/test_event/test_telegram.py

@@ -287,6 +287,8 @@ class TestTelegramEventObserver:
         observer.register(pipe_handler, mix_data)
 
         results = await observer.trigger(42)
+        assert len(results) == 2
+        assert results[1].pop("handler")
         assert results == ((42,), {"b": 2})
 
     @pytest.mark.parametrize("middleware_type", ("middleware", "outer_middleware"))

tests/test_dispatcher/test_filters/test_command.py

@@ -126,3 +126,16 @@ class TestCommandObject:
     )
     def test_text(self, obj: CommandObject, result: str):
         assert obj.text == result
+
+    def test_update_handler_flags(self):
+        cmd = Command(commands=["start"])
+        flags = {}
+        cmd.update_handler_flags(flags)
+
+        assert "commands" in flags
+        assert isinstance(flags["commands"], list)
+        assert len(flags["commands"]) == 1
+        assert flags["commands"][0] is cmd
+
+        cmd.update_handler_flags(flags)
+        assert len(flags["commands"]) == 2