Add kind:tests label for PRs that only modify test files

[henry3260]

closes: #61377

---

Was generative AI tooling used to co-author this PR?

• Yes (please specify the tool below)

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• Read the Pull Request Guidelines for more information. Note: commit author/co-author name and email in commits become permanently public when merged.
• For fundamental code changes, an Airflow Improvement Proposal (AIP) is needed.
• When adding dependency, check compliance with the ASF 3rd Party License Policy.
• For significant user-facing changes create newsfragment: {pr_number}.significant.rst or {issue_number}.significant.rst, in airflow-core/newsfragments.

[henry3260]

I hope I didn't miss anything.

[eladkal]

This will not work.
It will add the test label to any PR that modifies test files. This means that the label will be added to all PRs.

The task is to add the labels to PRs that changes only test files.

[henry3260]

This will not work. It will add the test label to any PR that modifies test files. This means that the label will be added to all PRs.

The task is to add the labels to PRs that changes only test files.

Thanks for the clarification. I misunderstood the requirement.

[potiuk]

Yeah. This is a bit more complex :)

[henry3260]

Yeah. This is a bit more complex :)

Should we automatically remove the label if the contributor adds non-test files?

[amoghrajesh]

Yeah, we shouldn't add labels in such cases.

[amoghrajesh]

But I do not know if boring cyborg has a technical limitation on that

[amoghrajesh]

We have a boring cyborg to do it, can't we do it there: https://github.com/apache/airflow/blob/main/.github/boring-cyborg.yml?

[henry3260]

We have a boring cyborg to do it, can't we do it there: https://github.com/apache/airflow/blob/main/.github/boring-cyborg.yml?

Thanks for reviewing! I think we need additional logic to verify that every changed file is a test file, which is why a GitHub Actions workflow is needed.

[potiuk]

This will not work. pull request workflow from fork cannot have write permissions.

[potiuk]

this can really be done only via app - you can add feature to boring cyborg for that if missing.