Test case

tests/federation/transport/test_server.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 from tests import unittest
-from tests.unittest import override_config
+from tests.unittest import override_config, DEBUG
 
 
 class RoomDirectoryFederationTests(unittest.FederatingHomeserverTestCase):
@@ -38,3 +38,19 @@ def test_open_public_room_list_over_federation(self):
             "/_matrix/federation/v1/publicRooms",
         )
         self.assertEquals(200, channel.code)
+
+    @DEBUG
+    def test_edu_debugging_doesnt_explode(self):
+        """Sanity check fed. RX succeeds with `synapse.debug_8631` logging enabled.
+
+        Remove this when we strip out issue_8631_logger.
+        """
+        channel = self.make_signed_federation_request(
+            "PUT",
+            "/_matrix/federation/v1/send/txn_id_1234/",
+            content={
+                "edus": [{"edu_type": "m.device_list_update", "content": {"foo": "bar"}}],
+                "pdus": [],
+            },
+        )
+        self.assertEquals(200, channel.code)