fix tests to accomodate new structure of DAG after room creation

3 files changed, 11 insertions, 13 deletions

diff --git a/tests/handlers/test_sync.py b/tests/handlers/test_sync.py
index e3f38fbcc5..70be9ff9d6 100644
--- a/tests/handlers/test_sync.py
+++ b/tests/handlers/test_sync.py
@@ -222,9 +222,10 @@ class SyncTestCase(tests.unittest.HomeserverTestCase):
         )
         self.assertEqual(len(alice_sync_result.joined), 1)
         self.assertEqual(alice_sync_result.joined[0].room_id, room_id)
-        last_room_creation_event_id = (
-            alice_sync_result.joined[0].timeline.events[-1].event_id
-        )
+        last_room_creation_event_ids = [
+            alice_sync_result.joined[0].timeline.events[-1].event_id,
+            alice_sync_result.joined[0].timeline.events[-2].event_id,
+        ]
 
         # Eve, a ne'er-do-well, registers.
         eve = self.register_user("eve", "password")
@@ -250,7 +251,7 @@ class SyncTestCase(tests.unittest.HomeserverTestCase):
             self.hs.get_datastores().main,
             "get_prev_events_for_room",
             new_callable=MagicMock,
-            return_value=make_awaitable([last_room_creation_event_id]),
+            return_value=make_awaitable(last_room_creation_event_ids),
         )
         with mocked_get_prev_events:
             self.helper.join(room_id, eve, tok=eve_token)
diff --git a/tests/rest/client/test_rooms.py b/tests/rest/client/test_rooms.py
index aa2f578441..7d551c3810 100644
--- a/tests/rest/client/test_rooms.py
+++ b/tests/rest/client/test_rooms.py
@@ -710,7 +710,7 @@ class RoomsCreateTestCase(RoomBase):
         self.assertEqual(HTTPStatus.OK, channel.code, channel.result)
         self.assertTrue("room_id" in channel.json_body)
         assert channel.resource_usage is not None
-        self.assertEqual(44, channel.resource_usage.db_txn_count)
+        self.assertEqual(36, channel.resource_usage.db_txn_count)
 
     def test_post_room_initial_state(self) -> None:
         # POST with initial_state config key, expect new room id
@@ -723,7 +723,7 @@ class RoomsCreateTestCase(RoomBase):
         self.assertEqual(HTTPStatus.OK, channel.code, channel.result)
         self.assertTrue("room_id" in channel.json_body)
         assert channel.resource_usage is not None
-        self.assertEqual(50, channel.resource_usage.db_txn_count)
+        self.assertEqual(38, channel.resource_usage.db_txn_count)
 
     def test_post_room_visibility_key(self) -> None:
         # POST with visibility config key, expect new room id
diff --git a/tests/test_federation.py b/tests/test_federation.py
index 779fad1f63..9260de891e 100644
--- a/tests/test_federation.py
+++ b/tests/test_federation.py
@@ -46,10 +46,9 @@ class MessageAcceptTests(unittest.HomeserverTestCase):
         user_id = UserID("us", "test")
         our_user = create_requester(user_id)
         room_creator = self.homeserver.get_room_creation_handler()
+        config = {"preset": "public_chat"}
         self.room_id = self.get_success(
-            room_creator.create_room(
-                our_user, room_creator._presets_dict["public_chat"], ratelimit=False
-            )
+            room_creator.create_room(our_user, config, ratelimit=False)
         )[0]["room_id"]
 
         self.store = self.homeserver.get_datastores().main
@@ -99,10 +98,8 @@ class MessageAcceptTests(unittest.HomeserverTestCase):
         )
 
         # Make sure we actually joined the room
-        self.assertEqual(
-            self.get_success(self.store.get_latest_event_ids_in_room(self.room_id))[0],
-            "$join:test.serv",
-        )
+        res = self.get_success(self.store.get_latest_event_ids_in_room(self.room_id))
+        assert "$join:test.serv" in res
 
     def test_cant_hide_direct_ancestors(self):
         """