diff --git a/zerver/tests/test_event_system.py b/zerver/tests/test_event_system.py
index d906158e87..28b6c69615 100644
--- a/zerver/tests/test_event_system.py
+++ b/zerver/tests/test_event_system.py
@@ -1,5 +1,5 @@
 import time
-from typing import Any, Callable, Dict, List, Optional
+from typing import Any, Callable, Dict, List, Mapping, Optional
 from unittest import mock
 
 import orjson
@@ -1123,18 +1123,19 @@ class TestGetRawUserDataSystemBotRealm(ZulipTestCase):
 class TestUserPresenceUpdatesDisabled(ZulipTestCase):
     def test_presence_events_diabled_on_larger_realm(self) -> None:
         # First check that normally the mocked function gets called.
-        with mock.patch("zerver.lib.actions.send_event") as mock_send_event:
+        events: List[Mapping[str, Any]] = []
+        with self.tornado_redirected_to_list(events, expected_num_events=1):
             do_update_user_presence(
                 self.example_user("cordelia"),
                 get_client("website"),
                 timezone_now(),
                 UserPresence.ACTIVE,
             )
-        mock_send_event.assert_called_once()
 
         # Now check that if the realm has more than the USER_LIMIT_FOR_SENDING_PRESENCE_UPDATE_EVENTS
         # amount of active users, send_event doesn't get called.
-        with mock.patch("zerver.lib.actions.send_event") as mock_send_event:
+        events = []
+        with self.tornado_redirected_to_list(events, expected_num_events=0):
             with self.settings(USER_LIMIT_FOR_SENDING_PRESENCE_UPDATE_EVENTS=1):
                 do_update_user_presence(
                     self.example_user("hamlet"),
@@ -1142,4 +1143,3 @@ class TestUserPresenceUpdatesDisabled(ZulipTestCase):
                     timezone_now(),
                     UserPresence.ACTIVE,
                 )
-        mock_send_event.assert_not_called()
diff --git a/zerver/tests/test_message_send.py b/zerver/tests/test_message_send.py
index e767f89b5d..b35b5c71ff 100644
--- a/zerver/tests/test_message_send.py
+++ b/zerver/tests/test_message_send.py
@@ -1,5 +1,5 @@
 import datetime
-from typing import Any, Optional, Set
+from typing import Any, List, Mapping, Optional, Set
 from unittest import mock
 
 import orjson
@@ -1660,14 +1660,14 @@ class StreamMessagesTest(ZulipTestCase):
         )
 
     def _send_stream_message(self, user: UserProfile, stream_name: str, content: str) -> Set[int]:
-        with mock.patch("zerver.lib.actions.send_event") as m:
+        events: List[Mapping[str, Any]] = []
+        with self.tornado_redirected_to_list(events):
             self.send_stream_message(
                 user,
                 stream_name,
                 content=content,
             )
-        self.assertEqual(m.call_count, 1)
-        users = m.call_args[0][2]
+        users = events[0]["users"]
         user_ids = {u["id"] for u in users}
         return user_ids
 
diff --git a/zerver/tests/test_submessage.py b/zerver/tests/test_submessage.py
index edd4bfe96b..040e30fdb5 100644
--- a/zerver/tests/test_submessage.py
+++ b/zerver/tests/test_submessage.py
@@ -1,5 +1,4 @@
-from typing import Any, Dict, List
-from unittest import mock
+from typing import Any, Dict, List, Mapping
 
 from zerver.lib.message import MessageDict
 from zerver.lib.test_classes import ZulipTestCase
@@ -114,7 +113,8 @@ class TestBasics(ZulipTestCase):
             msg_type="whatever",
             content='{"name": "alice", "salary": 20}',
         )
-        with mock.patch("zerver.lib.actions.send_event") as m:
+        events: List[Mapping[str, Any]] = []
+        with self.tornado_redirected_to_list(events):
             result = self.client_post("/json/submessage", payload)
         self.assert_json_success(result)
 
@@ -129,10 +129,9 @@ class TestBasics(ZulipTestCase):
             type="submessage",
         )
 
-        self.assertEqual(m.call_count, 1)
-        data = m.call_args[0][1]
+        data = events[0]["event"]
         self.assertEqual(data, expected_data)
-        users = m.call_args[0][2]
+        users = events[0]["users"]
         self.assertIn(cordelia.id, users)
         self.assertIn(hamlet.id, users)