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Sliding Sync: Easier to understand timeline assertions in tests (#17511)

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Added `_assertTimelineEqual(...)` because I got fed up trying to
understand the crazy diffs from the standard
`self.assertEqual(...)`/`self.assertListEqual(...)`

Before:
```
[FAIL]
Traceback (most recent call last):
  File "/home/eric/Documents/github/element/synapse/tests/rest/client/sliding_sync/test_rooms_timeline.py", line 103, in test_rooms_limited_initial_sync
    self.assertListEqual(
  File "/usr/lib/python3.12/unittest/case.py", line 1091, in assertListEqual
    self.assertSequenceEqual(list1, list2, msg, seq_type=list)
  File "/usr/lib/python3.12/unittest/case.py", line 1073, in assertSequenceEqual
    self.fail(msg)
twisted.trial.unittest.FailTest: Lists differ: ['$4QcmnzhdazSnDYcYSZCS_6-MWSzM_dN3RC7TRvW0w[95 chars]isM'] != ['$8N1XJ7e-3K_wxAanLVD3v8KQ96_B5Xj4huGkgy4N4[95 chars]nnU']

First differing element 0:
'$4QcmnzhdazSnDYcYSZCS_6-MWSzM_dN3RC7TRvW0wWA'
'$8N1XJ7e-3K_wxAanLVD3v8KQ96_B5Xj4huGkgy4N4-E'

- ['$4QcmnzhdazSnDYcYSZCS_6-MWSzM_dN3RC7TRvW0wWA',
-  '$8N1XJ7e-3K_wxAanLVD3v8KQ96_B5Xj4huGkgy4N4-E',
? ^

+ ['$8N1XJ7e-3K_wxAanLVD3v8KQ96_B5Xj4huGkgy4N4-E',
? ^

-  '$q4PRxQ_pBZkQI1keYuZPTtExQ23DqpUI3-Lxwfj_isM']
+  '$4QcmnzhdazSnDYcYSZCS_6-MWSzM_dN3RC7TRvW0wWA',
+  '$j3Xj-t2F1wH9kUHsI8X5yqS7hkdSyN2owaArfvk8nnU']
```

After:

```
[FAIL]
Traceback (most recent call last):
  File "/home/eric/Documents/github/element/synapse/tests/rest/client/sliding_sync/test_rooms_timeline.py", line 178, in test_rooms_limited_initial_sync
    self._assertTimelineEqual(
  File "/home/eric/Documents/github/element/synapse/tests/rest/client/sliding_sync/test_rooms_timeline.py", line 110, in _assertTimelineEqual
    self._assertListEqual(
  File "/home/eric/Documents/github/element/synapse/tests/rest/client/sliding_sync/test_rooms_timeline.py", line 79, in _assertListEqual
    self.fail(f"{diff_message}\n{message}")
twisted.trial.unittest.FailTest: Items must
Expected items to be in actual ('?' = missing expected items):
 [
   (10, master) $w-BoqW1PQQFU4TzVJW5OIelugxh0mY12wrfw6mbC6D4 (m.room.message) activity4
   (11, master) $sSidTZf1EOQmCVDU4mrH_1-bopMQhwcDUO2IhoemR6M (m.room.message) activity5
?  (12, master) $bgOcc3D-2QSkbk4aBxKVyOOQJGs7ZuncRJwG3cEANZg (m.room.member, @user1:test) join
 ]
Actual ('+' = found expected items):
 [
+  (11, master) $sSidTZf1EOQmCVDU4mrH_1-bopMQhwcDUO2IhoemR6M (m.room.message) activity5
+  (10, master) $w-BoqW1PQQFU4TzVJW5OIelugxh0mY12wrfw6mbC6D4 (m.room.message) activity4
   (9, master) $FmCNyc11YeFwiJ4an7_q6H0LCCjQOKd6UCr5VKeXXUw (m.room.message, None) activity3
 ]
```
This commit is contained in:
Eric Eastwood 2024-08-05 13:20:15 -05:00 committed by GitHub
parent 2b620e0a15
commit e3db7b2d81
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 104 additions and 21 deletions
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1
changelog.d/17511.misc Normal file
View file

@ -0,0 +1 @@
Easier to understand `timeline` assertions in Sliding Sync tests.

124
tests/rest/client/sliding_sync/test_rooms_timeline.py
View file

@ -12,13 +12,14 @@
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
import logging
from typing import List, Optional
from twisted.test.proto_helpers import MemoryReactor
import synapse.rest.admin
from synapse.rest.client import login, room, sync
from synapse.server import HomeServer
from synapse.types import StreamToken
from synapse.types import StreamToken, StrSequence
from synapse.util import Clock
from tests.rest.client.sliding_sync.test_sliding_sync import SlidingSyncBase
@ -42,6 +43,82 @@ class SlidingSyncRoomsTimelineTestCase(SlidingSyncBase):
self.store = hs.get_datastores().main
self.storage_controllers = hs.get_storage_controllers()
def _assertListEqual(
self,
actual_items: StrSequence,
expected_items: StrSequence,
message: Optional[str] = None,
) -> None:
"""
Like `self.assertListEqual(...)` but with an actually understandable diff message.
"""
if actual_items == expected_items:
return
expected_lines: List[str] = []
for expected_item in expected_items:
is_expected_in_actual = expected_item in actual_items
expected_lines.append(
"{} {}".format(" " if is_expected_in_actual else "?", expected_item)
)
actual_lines: List[str] = []
for actual_item in actual_items:
is_actual_in_expected = actual_item in expected_items
actual_lines.append(
"{} {}".format("+" if is_actual_in_expected else " ", actual_item)
)
newline = "\n"
expected_string = f"Expected items to be in actual ('?' = missing expected items):\n [\n{newline.join(expected_lines)}\n ]"
actual_string = f"Actual ('+' = found expected items):\n [\n{newline.join(actual_lines)}\n ]"
first_message = "Items must"
diff_message = f"{first_message}\n{expected_string}\n{actual_string}"
self.fail(f"{diff_message}\n{message}")
def _assertTimelineEqual(
self,
*,
room_id: str,
actual_event_ids: List[str],
expected_event_ids: List[str],
message: Optional[str] = None,
) -> None:
"""
Like `self.assertListEqual(...)` for event IDs in a room but will give a nicer
output with context for what each event_id is (type, stream_ordering, content,
etc).
"""
if actual_event_ids == expected_event_ids:
return
event_id_set = set(actual_event_ids + expected_event_ids)
events = self.get_success(self.store.get_events(event_id_set))
def event_id_to_string(event_id: str) -> str:
event = events.get(event_id)
if event:
state_key = event.get_state_key()
state_key_piece = f", {state_key}" if state_key is not None else ""
return (
f"({event.internal_metadata.stream_ordering: >2}, {event.internal_metadata.instance_name}) "
+ f"{event.event_id} ({event.type}{state_key_piece}) {event.content.get('membership', '')}{event.content.get('body', '')}"
)
return f"{event_id} <event not found in room_id={room_id}>"
self._assertListEqual(
actual_items=[
event_id_to_string(event_id) for event_id in actual_event_ids
],
expected_items=[
event_id_to_string(event_id) for event_id in expected_event_ids
],
message=message,
)
def test_rooms_limited_initial_sync(self) -> None:
"""
Test that we mark `rooms` as `limited=True` when we saturate the `timeline_limit`
@ -85,17 +162,18 @@ class SlidingSyncRoomsTimelineTestCase(SlidingSyncBase):
response_body["rooms"][room_id1],
)
# Check to make sure the latest events are returned
self.assertEqual(
[
self._assertTimelineEqual(
room_id=room_id1,
actual_event_ids=[
event["event_id"]
for event in response_body["rooms"][room_id1]["timeline"]
],
[
expected_event_ids=[
event_response4["event_id"],
event_response5["event_id"],
user1_join_response["event_id"],
],
response_body["rooms"][room_id1]["timeline"],
message=str(response_body["rooms"][room_id1]["timeline"]),
)
# Check to make sure the `prev_batch` points at the right place
@ -227,16 +305,17 @@ class SlidingSyncRoomsTimelineTestCase(SlidingSyncBase):
+ str(response_body["rooms"][room_id1]),
)
# Check to make sure the latest events are returned
self.assertEqual(
[
self._assertTimelineEqual(
room_id=room_id1,
actual_event_ids=[
event["event_id"]
for event in response_body["rooms"][room_id1]["timeline"]
],
[
expected_event_ids=[
event_response2["event_id"],
event_response3["event_id"],
],
response_body["rooms"][room_id1]["timeline"],
message=str(response_body["rooms"][room_id1]["timeline"]),
)
# All events are "live"
@ -303,18 +382,19 @@ class SlidingSyncRoomsTimelineTestCase(SlidingSyncBase):
+ str(response_body["rooms"][room_id1]),
)
# Check to make sure that the "live" and historical events are returned
self.assertEqual(
[
self._assertTimelineEqual(
room_id=room_id1,
actual_event_ids=[
event["event_id"]
for event in response_body["rooms"][room_id1]["timeline"]
],
[
expected_event_ids=[
event_response2["event_id"],
user1_join_response["event_id"],
event_response3["event_id"],
event_response4["event_id"],
],
response_body["rooms"][room_id1]["timeline"],
message=str(response_body["rooms"][room_id1]["timeline"]),
)
# Only events after the `from_token` are "live" (join, event3, event4)
@ -361,17 +441,18 @@ class SlidingSyncRoomsTimelineTestCase(SlidingSyncBase):
response_body, _ = self.do_sync(sync_body, tok=user1_tok)
# We should see events before the ban but not after
self.assertEqual(
[
self._assertTimelineEqual(
room_id=room_id1,
actual_event_ids=[
event["event_id"]
for event in response_body["rooms"][room_id1]["timeline"]
],
[
expected_event_ids=[
event_response3["event_id"],
event_response4["event_id"],
user1_ban_response["event_id"],
],
response_body["rooms"][room_id1]["timeline"],
message=str(response_body["rooms"][room_id1]["timeline"]),
)
# No "live" events in an initial sync (no `from_token` to define the "live"
# range)
@ -428,17 +509,18 @@ class SlidingSyncRoomsTimelineTestCase(SlidingSyncBase):
response_body, _ = self.do_sync(sync_body, since=from_token, tok=user1_tok)
# We should see events before the ban but not after
self.assertEqual(
[
self._assertTimelineEqual(
room_id=room_id1,
actual_event_ids=[
event["event_id"]
for event in response_body["rooms"][room_id1]["timeline"]
],
[
expected_event_ids=[
event_response3["event_id"],
event_response4["event_id"],
user1_ban_response["event_id"],
],
response_body["rooms"][room_id1]["timeline"],
message=str(response_body["rooms"][room_id1]["timeline"]),
)
# All live events in the incremental sync
self.assertEqual(