[blink1073]

References

Fixes the auto-merge step added in #82. Seen in blink1073/oct2py#480 (run https://github.com/blink1073/oct2py/actions/runs/39207992409/job/117914908753): the PR was approved but auto-merge was never enabled, and the job still succeeded.

Description

gh's built-in --jq prints an empty string for a JSON null, unlike jq, which prints null. auto_merge.sh compared the autoMergeRequest lookup against the string "null", so the check never matched and gh pr merge --auto was silently skipped on every run.

Changes

• actions/common/auto_merge.sh: ask gh for .autoMergeRequest != null, which prints true or false, and enable auto-merge unless it is already true.
• actions/common/test_auto_merge.sh: the fake gh used to return a hard-coded "null", which hid the bug. It now runs the script's real --jq expression with jq against a sample PR JSON and prints null as an empty line, like real gh.

Backwards-incompatible changes

None

Testing

• bash actions/common/test_auto_merge.sh passes all 10 cases.
• Running the updated tests against the old auto_merge.sh fails both "enables squash auto-merge" cases, so the tests now catch this bug.
• The test needs jq, which is preinstalled on GitHub's Ubuntu runners.

AI usage

• Some or all of the content of this PR was generated by AI.
• The human author has carefully reviewed this PR and run this code.
• AI tools and models used: Claude Opus 5.5 (Claude Code)

🤖 Generated with Claude Code

https://claude.ai/code/session_01LPLNEEPRsNpjrJ4vwxictq

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge.

Summary

Fixes update PRs silently skipping auto-merge.

• Update pull requests enable auto-merge when no request exists.

No actionable issues found. Tests were inspected but not run.

_{Reviews (1) · Last reviewed commit: "fix: actually enable auto-merge on updat..." · Reviewed by Greptile}