Chore: add path filters to testing.yaml for pull_request trigger#101
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askb wants to merge 1 commit into
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Chore: add path filters to testing.yaml for pull_request trigger#101askb wants to merge 1 commit into
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Pull request overview
Adds pull-request path filtering to the CI test workflow so that PRs limited to certain non-code files can avoid running the full “Test & Validate” job (aimed at reducing unnecessary CI runs for Dependabot workflow SHA pin bumps).
Changes:
- Add
pull_request.pathsfilters to.github/workflows/testing.yamlto skip running this workflow when changes are limited to excluded paths/patterns.
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Problem:
The testing.yaml workflow triggers on ALL pull_request events regardless
of which files changed. Across the lfreleng-actions org, 75% of
Dependabot PRs (74 of 98 at last audit) only bump SHA pins in
.github/workflows/ files — yet each one triggers the full integration
test suite unnecessarily.
This wastes 65%+ of CI compute on test runs that can never catch a
regression because no source code, dependencies, or tests changed.
Solution:
Add path filters using the same denylist (opt-out) convention already
used by build-test.yaml across the org (dependamerge, gerrit-clone-action,
gha-workflow-linter, lftools-uv, github2gerrit-action):
paths:
- '**'
- '!.github/**'
- '!.*'
- '!tox.ini'
This approach:
- Matches the existing org convention
- Fails open (worst case: a few extra CI minutes) rather than failing
closed (allowlist silently stops running tests if layout changes)
- Is universal and templatable from actions-template without per-repo
customization across 55+ repos of varying languages
Impact:
- Before: Every Dependabot PR triggers full integration tests
- After: Only source/dependency changes trigger tests
- Savings: ~65% reduction in unnecessary CI compute
Signed-off-by: Anil Belur <askb23@gmail.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>
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Summary
Add path filters to
testing.yamlso Dependabot PRs that only bump SHA pins in.github/workflows/skip the full test suite.Why This Is Needed
Approach: Denylist (Org Convention)
Uses the same opt-out pattern already established across the org:
Impact
Part of org-wide Dependabot CI optimization initiative.