diff --git a/tests/storage/test_cleanup_extrems.py b/tests/storage/test_cleanup_extrems.py
index f4c81ef77d..e9e2d5337c 100644
--- a/tests/storage/test_cleanup_extrems.py
+++ b/tests/storage/test_cleanup_extrems.py
@@ -222,3 +222,44 @@ class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
self.store.get_latest_event_ids_in_room(self.room_id)
)
self.assertEqual(set(latest_event_ids), set([event_id_b, event_id_c]))
+
+
+class CleanupExtremDummyEventsTestCase(HomeserverTestCase):
+ def make_homeserver(self, reactor, clock):
+ config = self.default_config()
+ config["cleanup_extremities_with_dummy_events"] = True
+ return self.setup_test_homeserver(config=config)
+
+ def prepare(self, reactor, clock, homeserver):
+ self.store = homeserver.get_datastore()
+ self.room_creator = homeserver.get_room_creation_handler()
+
+ # Create a test user and room
+ self.user = UserID("alice", "test")
+ self.requester = Requester(self.user, None, False, None, None)
+ info = self.get_success(self.room_creator.create_room(self.requester, {}))
+ self.room_id = info["room_id"]
+
+ def test_send_dummy_event(self):
+ # Create a bushy graph with 50 extremities.
+
+ event_id_start = self.create_and_send_event(self.room_id, self.user)
+
+ for _ in range(50):
+ self.create_and_send_event(
+ self.room_id, self.user, prev_event_ids=[event_id_start]
+ )
+
+ latest_event_ids = self.get_success(
+ self.store.get_latest_event_ids_in_room(self.room_id)
+ )
+ self.assertEqual(len(latest_event_ids), 50)
+
+ # Pump the reactor repeatedly so that the background updates have a
+ # chance to run.
+ self.pump(10 * 60)
+
+ latest_event_ids = self.get_success(
+ self.store.get_latest_event_ids_in_room(self.room_id)
+ )
+ self.assertTrue(len(latest_event_ids) < 10, len(latest_event_ids))
|
