TST: fix testing for no user warning

[hagenw]

We tested with with pytest.warns(None) that no user warning is raised, which was wrong and also raises an error since pytest > 7.0. As stated in the pytest documentation, one should use

with warnings.catch_warnings():
    warnings.simplefilter("error")
    ...

to check that no warning is raised.

I updated the code accordingly.

Summary by Sourcery

Bug Fixes:

• Fix testing for no user warning by replacing 'pytest.warns(None)' with 'warnings.catch_warnings()' and 'warnings.simplefilter("error")' to comply with pytest > 7.0.

[sourcery-ai]

Reviewer's Guide by Sourcery

The PR updates the testing approach for checking absence of warnings in pytest tests. It replaces the deprecated pytest.warns(None) with the recommended warnings.catch_warnings() and warnings.simplefilter("error") pattern.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Update warning assertion pattern in test code	Replace deprecated pytest.warns(None) with warnings.catch_warnings() Add warnings.simplefilter('error') to ensure no warnings are raised Maintain existing test logic for checking function calls with different parameter values	tests/test_utils.py

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time. You can also use
  this command to specify where the summary should be inserted.

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey @hagenw - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}