diff --git a/tests/rest/client/v1/test_rooms.py b/tests/rest/client/v1/test_rooms.py
index 5e38fd6ced..e84e578f99 100644
--- a/tests/rest/client/v1/test_rooms.py
+++ b/tests/rest/client/v1/test_rooms.py
@@ -25,7 +25,9 @@ from twisted.internet import defer
import synapse.rest.admin
from synapse.api.constants import EventContentFields, EventTypes, Membership
+from synapse.handlers.pagination import PurgeStatus
from synapse.rest.client.v1 import login, profile, room
+from synapse.util.stringutils import random_string
from tests import unittest
@@ -910,6 +912,78 @@ class RoomMessageListTestCase(RoomBase):
return channel.json_body["chunk"]
+ def test_room_messages_purge(self):
+ store = self.hs.get_datastore()
+ pagination_handler = self.hs.get_pagination_handler()
+
+ # Send a first message in the room, which will be removed by the purge.
+ first_event_id = self.helper.send(self.room_id, "message 1")["event_id"]
+ first_token = self.get_success(
+ store.get_topological_token_for_event(first_event_id)
+ )
+
+ # Send a second message in the room, which won't be removed, and which we'll
+ # use as the marker to purge events before.
+ second_event_id = self.helper.send(self.room_id, "message 2")["event_id"]
+ second_token = self.get_success(
+ store.get_topological_token_for_event(second_event_id)
+ )
+
+ # Send a third event in the room to ensure we don't fall under any edge case
+ # due to our marker being the latest forward extremity in the room.
+ self.helper.send(self.room_id, "message 3")
+
+ # Check that we get the first and second message when querying /messages.
+ request, channel = self.make_request(
+ "GET",
+ "/rooms/%s/messages?access_token=x&from=%s&dir=b&filter=%s"
+ % (self.room_id, second_token, json.dumps({"types": [EventTypes.Message]})),
+ )
+ self.render(request)
+ self.assertEqual(channel.code, 200, channel.json_body)
+
+ chunk = channel.json_body["chunk"]
+ self.assertEqual(len(chunk), 2, [event["content"] for event in chunk])
+
+ # Purge every event before the second event.
+ purge_id = random_string(16)
+ pagination_handler._purges_by_id[purge_id] = PurgeStatus()
+ self.get_success(
+ pagination_handler._purge_history(
+ purge_id=purge_id,
+ room_id=self.room_id,
+ token=second_token,
+ delete_local_events=True,
+ )
+ )
+
+ # Check that we only get the second message through /message now that the first
+ # has been purged.
+ request, channel = self.make_request(
+ "GET",
+ "/rooms/%s/messages?access_token=x&from=%s&dir=b&filter=%s"
+ % (self.room_id, second_token, json.dumps({"types": [EventTypes.Message]})),
+ )
+ self.render(request)
+ self.assertEqual(channel.code, 200, channel.json_body)
+
+ chunk = channel.json_body["chunk"]
+ self.assertEqual(len(chunk), 1, [event["content"] for event in chunk])
+
+ # Check that we get no event, but also no error, when querying /messages with
+ # the token that was pointing at the first event, because we don't have it
+ # anymore.
+ request, channel = self.make_request(
+ "GET",
+ "/rooms/%s/messages?access_token=x&from=%s&dir=b&filter=%s"
+ % (self.room_id, first_token, json.dumps({"types": [EventTypes.Message]})),
+ )
+ self.render(request)
+ self.assertEqual(channel.code, 200, channel.json_body)
+
+ chunk = channel.json_body["chunk"]
+ self.assertEqual(len(chunk), 0, [event["content"] for event in chunk])
+
class RoomSearchTestCase(unittest.HomeserverTestCase):
servlets = [
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