Allow pytest 9

[cjwatson]

https://docs.pytest.org/en/stable/deprecations.html#applying-a-mark-to-a-fixture-function notes that applying a mark to a fixture function never had any effect. It raises an exception during test collection with pytest 9.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.28%. Comparing base (3539e7d) to head (78d62f4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #986      +/-   ##
==========================================
+ Coverage   88.18%   88.28%   +0.09%     
==========================================
  Files          32       32              
  Lines        1007     1007              
  Branches      105      105              
==========================================
+ Hits          888      889       +1     
+ Misses        101      100       -1     
  Partials       18       18              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[cclauss]

Should that decorator still work with https://pypi.org/project/pytest-django ?

https://pytest-django.readthedocs.io/en/latest/helpers.html

[cjwatson]

I'm not sure I understand the question, sorry. The rule that you can't use marks on fixtures comes from pytest itself.

[auvipy]

why removing this?

[cjwatson]

The link I posted in the issue description explains it. This is a mark applied to a fixture function. With pytest<9 it was a no-op; with pytest>=9 it is an error. It doesn't matter what the mark is.

The mark that actually matters is the one applied to the class, which my PR doesn't touch.