Return an immutable value from get_latest_event_ids_in_room. (#16326)

3 files changed, 8 insertions, 8 deletions

diff --git a/tests/replication/storage/test_events.py b/tests/replication/storage/test_events.py
index af25815fa5..33c277a38a 100644
--- a/tests/replication/storage/test_events.py
+++ b/tests/replication/storage/test_events.py
@@ -90,7 +90,7 @@ class EventsWorkerStoreTestCase(BaseWorkerStoreTestCase):
     def test_get_latest_event_ids_in_room(self) -> None:
         create = self.persist(type="m.room.create", key="", creator=USER_ID)
         self.replicate()
-        self.check("get_latest_event_ids_in_room", (ROOM_ID,), [create.event_id])
+        self.check("get_latest_event_ids_in_room", (ROOM_ID,), {create.event_id})
 
         join = self.persist(
             type="m.room.member",
@@ -99,7 +99,7 @@ class EventsWorkerStoreTestCase(BaseWorkerStoreTestCase):
             prev_events=[(create.event_id, {})],
         )
         self.replicate()
-        self.check("get_latest_event_ids_in_room", (ROOM_ID,), [join.event_id])
+        self.check("get_latest_event_ids_in_room", (ROOM_ID,), {join.event_id})
 
     def test_redactions(self) -> None:
         self.persist(type="m.room.create", key="", creator=USER_ID)
diff --git a/tests/replication/tcp/streams/test_events.py b/tests/replication/tcp/streams/test_events.py
index 65ef4bb160..128fc3e046 100644
--- a/tests/replication/tcp/streams/test_events.py
+++ b/tests/replication/tcp/streams/test_events.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Any, List, Optional, Sequence
+from typing import Any, List, Optional
 
 from twisted.test.proto_helpers import MemoryReactor
 
@@ -139,7 +139,7 @@ class EventsStreamTestCase(BaseStreamTestCase):
         )
 
         # this is the point in the DAG where we make a fork
-        fork_point: Sequence[str] = self.get_success(
+        fork_point = self.get_success(
             self.hs.get_datastores().main.get_latest_event_ids_in_room(self.room_id)
         )
 
@@ -294,7 +294,7 @@ class EventsStreamTestCase(BaseStreamTestCase):
         )
 
         # this is the point in the DAG where we make a fork
-        fork_point: Sequence[str] = self.get_success(
+        fork_point = self.get_success(
             self.hs.get_datastores().main.get_latest_event_ids_in_room(self.room_id)
         )
 
@@ -316,14 +316,14 @@ class EventsStreamTestCase(BaseStreamTestCase):
         self.test_handler.received_rdata_rows.clear()
 
         # now roll back all that state by de-modding the users
-        prev_events = fork_point
+        prev_events = list(fork_point)
         pl_events = []
         for u in user_ids:
             pls["users"][u] = 0
             e = self.get_success(
                 inject_event(
                     self.hs,
-                    prev_event_ids=list(prev_events),
+                    prev_event_ids=prev_events,
                     type=EventTypes.PowerLevels,
                     state_key="",
                     sender=self.user_id,
diff --git a/tests/replication/test_federation_sender_shard.py b/tests/replication/test_federation_sender_shard.py
index 9b28cd474f..59f4fdc70b 100644
--- a/tests/replication/test_federation_sender_shard.py
+++ b/tests/replication/test_federation_sender_shard.py
@@ -261,7 +261,7 @@ class FederationSenderTestCase(BaseMultiWorkerStreamTestCase):
 
         builder = factory.for_room_version(room_version, event_dict)
         join_event = self.get_success(
-            builder.build(prev_event_ids=prev_event_ids, auth_event_ids=None)
+            builder.build(prev_event_ids=list(prev_event_ids), auth_event_ids=None)
         )
 
         self.get_success(federation.on_send_membership_event(remote_server, join_event))