diff --git a/tests/test_utils/test_magic_filter.py b/tests/test_utils/test_magic_filter.py
new file mode 100644
index 00000000..4a1d05f3
--- /dev/null
+++ b/tests/test_utils/test_magic_filter.py
@@ -0,0 +1,21 @@
+from dataclasses import dataclass
+from re import Match
+
+from aiogram import F
+from aiogram.utils.magic_filter import MagicFilter
+
+
+@dataclass
+class MyObject:
+    text: str
+
+
+class TestMagicFilter:
+    def test_operation_as(self):
+        magic: MagicFilter = F.text.regexp(r"^(\d+)$").as_("match")
+
+        assert not magic.resolve(MyObject(text="test"))
+
+        result = magic.resolve(MyObject(text="123"))
+        assert isinstance(result, dict)
+        assert isinstance(result["match"], Match)