ChannelsLiveServerTestCase fails with django 5.2

[devkral]

Django 5.2 made TestCase._pre_setup a classmethod but this isn't reflected in ChannelsLifeServerTestCase.

This is leading to a crash when trying to use ChannelsLiveServerTestCase.

[carltongibson]

@devkral Can you make a pr?

[AlexShonia]

Got the same issue here after following the channels tutorial:

(venv) ➜  meet-and-chat git:(main) ✗ python3 manage.py test app.meet_n_chat.tests
Found 2 test(s).
Creating test database for alias 'default'...
Destroying old test database for alias 'default'...
System check identified no issues (0 silenced).
E
======================================================================
ERROR: setUpClass (app.meet_n_chat.tests.ChatTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/alex/Projects/meet-and-chat/app/meet_n_chat/tests.py", line 14, in setUpClass
    super().setUpClass()
  File "/home/alex/Projects/meet-and-chat/venv/lib/python3.12/site-packages/django/test/testcases.py", line 1119, in setUpClass
    cls._pre_setup()
TypeError: ChannelsLiveServerTestCase._pre_setup() missing 1 required positional argument: 'self'

----------------------------------------------------------------------
Ran 0 tests in 0.001s

FAILED (errors=1)
Destroying test database for alias 'default'...

[carltongibson]

Yep, django/django@8eca3e9 changed the behaviour here.

[devkral]

sry not much time, currently quite busy

[pandafy]

@carltongibson I think we would need a Django project to test ChannelsLiveServerTestCase. I don't see existing tests for this class right now.

[carltongibson]

@pandafy Yes, we could add a small test project to the test suite.

[dee077]

Hi @carltongibson, I'm currently working on a fix for this.
I’ll keep you posted once it's ready.

[nemesifier]

Thanks @dee077 for starting #2160.
We need a solution for this issue in @openwisp and we're happy to help. We're open to suggestions.
A big thanks in advance to the maintainers who'll help us out.