Add filters and class based handler for errors

tests/test_dispatcher/test_filters/test_exception.py

@@ -0,0 +1,51 @@
+import re
+
+import pytest
+
+from aiogram.dispatcher.filters import ExceptionMessageFilter, ExceptionTypeFilter
+
+
+class TestExceptionMessageFilter:
+    @pytest.mark.parametrize("value", ["value", re.compile("value")])
+    def test_converter(self, value):
+        obj = ExceptionMessageFilter(match=value)
+        assert isinstance(obj.match, re.Pattern)
+
+    @pytest.mark.asyncio
+    async def test_match(self):
+        obj = ExceptionMessageFilter(match="KABOOM")
+
+        result = await obj(Exception())
+        assert not result
+
+        result = await obj(Exception("KABOOM"))
+        assert isinstance(result, dict)
+        assert "match_exception" in result
+
+
+class MyException(Exception):
+    pass
+
+
+class MyAnotherException(MyException):
+    pass
+
+
+class TestExceptionTypeFilter:
+    @pytest.mark.asyncio
+    @pytest.mark.parametrize(
+        "exception,value",
+        [
+            [Exception(), False],
+            [ValueError(), False],
+            [TypeError(), False],
+            [MyException(), True],
+            [MyAnotherException(), True],
+        ],
+    )
+    async def test_check(self, exception: Exception, value: bool):
+        obj = ExceptionTypeFilter(exception=MyException)
+
+        result = await obj(exception)
+
+        assert result == value