Convert tests to ruff-format

[hmellor]

RFC: #17657

If we are converting directory x:

• In x, we add a local pyproject.toml which:
  • overrides ruff's line length to 88 (it's own default)
  • removes the deprecated type ignores
  • enables isort in ruff
  • enables formatting of code in docstrings (good for the API docs)
• We add x to the list of files to run ruff-format on in .pre-commit-config.yaml
• We add x to the list of ignores in the yapf and isort config in the root pyproject.toml

[github-actions]

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[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @hmellor.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[gemini-code-assist]

Code Review

This pull request successfully converts the tests directory to use ruff-format. The changes are well-contained and achieve the stated goal.

Here's a summary of my review:

• Configuration: The updates to .pre-commit-config.yaml and pyproject.toml correctly switch the formatting responsibility for the tests directory from yapf and isort to ruff-format. The use of a verbose regex in .pre-commit-config.yaml is a nice improvement for readability.
• Code Formatting: The changes across all Python files in the tests directory are purely stylistic and consistent with the application of a new code formatter. I've reviewed the diffs and found no unintended logical changes.
• Correctness: The changes appear correct and align with the RFC. The CI test runs will be the ultimate verification that no regressions were introduced.

Overall, this is a solid refactoring effort that improves tooling and consistency. I have no high or critical issues to report. The PR looks good to merge.

[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @hmellor.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @hmellor.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork