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connoraird wants to merge 2 commits into from
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gh-22: Add steps to regression-test workflow to comment on a PR #776

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gh-22: Add steps to regression-test workflow to comment on a PR if re…
connoraird Nov 13, 2025
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Rename job
connoraird Nov 13, 2025
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34 changes: 34 additions & 0 deletions .github/workflows/regression-test.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -18,3 +18,37 @@ jobs:
with:
starting_revision: ${{ github.event.pull_request.base.ref }}
end_revision: ${{ github.event.pull_request.head.ref }}

write-pr-comment:
name: Write PR Comment
runs-on: ubuntu-latest
needs: regression-tests
if: ${{ failure() }}
env:
REGRESSION_TEST_OUTPUT_FILE: output.txt

steps:
- name: Download distributions
uses: actions/download-artifact@v6
with:
name: regression_output
path: $REGRESSION_TEST_OUTPUT_FILE

- name: Extract regression information for PR comment
id: extract_comment
run: >-
f=$REGRESSION_TEST_OUTPUT_FILE

start=$(grep -n -m1 'Performance has regressed:' "$f" | cut -d: -f1)
|| { echo "No match"; exit 1; }
s_dash=$(awk -v n=$start 'NR<=n && /^-+$/ {l=NR} END{print l}' "$f")
e_dash=$(awk -v n=$start 'NR>=n && /^-+$/ {print NR; exit}' "$f")
PR_COMMENT_MSG=$(sed -n "${s_dash},${e_dash}p" "$f")

echo "PR_COMMENT_MSG=$PR_COMMENT_MSG" >> $GITHUB_OUTPUT

- name: Write PR comment
uses: mshick/add-pr-comment@v2
with:
message: >-
${{ steps.extract_comment.outputs.PR_COMMENT_MSG }}
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