convert events.UnknownFrame into a dataclass

Author: mhils

src/h2/connection.py

@@ -1972,8 +1972,7 @@ def _receive_unknown_frame(self, frame: ExtensionFrame) -> tuple[list[Frame], li
         self.config.logger.debug(
             "Received unknown extension frame (ID %d)", frame.stream_id,
         )
-        event = UnknownFrameReceived()
-        event.frame = frame
+        event = UnknownFrameReceived(frame=frame)
         return [], [event]
 
     def _local_settings_acked(self) -> dict[SettingCodes | int, ChangedSetting]:

src/h2/events.py

@@ -635,6 +635,7 @@ def __repr__(self) -> str:
         )
 
 
+@dataclass(**kw_only)
 class UnknownFrameReceived(Event):
     """
     The UnknownFrameReceived event is fired when the remote peer sends a frame
@@ -650,9 +651,7 @@ class UnknownFrameReceived(Event):
     .. versionadded:: 2.7.0
     """
 
-    def __init__(self) -> None:
-        #: The hyperframe Frame object that encapsulates the received frame.
-        self.frame: Frame | None = None
+    frame: Frame
 
     def __repr__(self) -> str:
         return "<UnknownFrameReceived>"

tests/test_events.py

@@ -7,6 +7,7 @@
 import inspect
 import sys
 
+import hyperframe.frame
 import pytest
 from hypothesis import given
 from hypothesis.strategies import integers, lists, tuples
@@ -360,7 +361,7 @@ def test_unknownframereceived_repr(self) -> None:
         """
         UnknownFrameReceived has a useful debug representation.
         """
-        e = h2.events.UnknownFrameReceived()
+        e = h2.events.UnknownFrameReceived(frame=hyperframe.frame.Frame(1))
         assert repr(e) == "<UnknownFrameReceived>"