GHA: is it possible to run tests only against changed targets?

[Andersson007]

Currently if any file is changed in a repository with GHA, it runs all available tests (all targets).
It affects GHA CI performance across all the collection under the ansible-collections.
It causes the long queue, so contributors can wait for hours with "Queued task" to get the result.

If we could find a way to make GHA to run only targets related to changed files, it'd be really cool.

[Andersson007]

ansible-collections/community.mysql#473

[Andersson007]

it GHA matrix does not use encapsulation, add --changed to all invocations of the ansible-test command in GHA matrix

• CI: add --changed to ansible-test command ansible-collections/community.proxysql#131
• for collection_template Update GHA matrix template ansible-collections/collection_template#57

Create similar issues in other repos using GHA

[Andersson007]

• Go through all GHA collections and:
  • Add --changed to ansible-test invocations in their matrix in .github/workflows or
  • If it uses ansible-community/ansible-test-gh-action@release/v1 workflow, add pull-request-change-detection: true like in CI: add PR change detection ansible-collections/community.mysql#473

[Andersson007]

https://github.com/ansible-collections/collection_template/blob/eb70f93f3663f5847d763e6dec414395eff9b05b/.github/workflows/ansible-test.yml#L111 should be changed to true if it's desired

closing as complete