fix(ci): harden PR-size exception governance - #657
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Reviewer's GuideHardens PR-size exceptions by constraining active allowances to the ordinary absolute ceilings, making authority base-ref governed and immune to self-expansion, retiring historical entries from resolution, and adding focused validation and regression coverage. Flow diagram for PR-size exception validation and resolutionflowchart TD
Registry["Exception registry"] --> Validate["validateExceptionRegistry"]
Validate --> Ceilings["validateExceptionCeilings"]
Validate --> Paths["validateExceptionPaths"]
Validate --> Allowances["validateSupplementalAllowances"]
Ceilings --> Active{Active entry?}
Active -->|Yes| Absolute["Enforce 30 files / 3000 lines / 15 commits"]
Active -->|No| Historical["Retain historical authorization values"]
Paths --> Controls["Reject governance control paths"]
Allowances --> Scope["Require supplemental paths in allowedPaths"]
Absolute --> Resolve["resolveException"]
Historical --> Resolve
Controls --> Resolve
Scope --> Resolve
Resolve --> Status{Active and base-ref match?}
Status -->|No| Reject["Exception not applied"]
Status -->|Yes| Changed["Check changed paths"]
Changed --> Governed{Governance control changed?}
Governed -->|Yes| Reject
Governed -->|No| Allowed{All paths allowed?}
Allowed -->|Yes| Apply["Apply exception"]
Allowed -->|No| Reject
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The PR correctly implements test count updates and PR-size exception governance controls. The implementation adds important security measures to prevent PRs from modifying their own governance rules. All changes are well-tested and function correctly. No blocking issues found.
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🏁 CodeAnt Quality Gate ResultsCommit: ✅ Overall Status: PASSEDQuality Gate Details
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📝 WalkthroughWalkthroughThe PR strengthens PR-size exception validation, marks an existing exception as historical, blocks governance-control paths, adds boundary tests, and updates README test metrics to 7,516+ tests across 602 files. ChangesPR size governance
README test metrics
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to The historical exception points to the wrong issue, and the new test group needs its required rationale annotation. These are bounded governance workflow issues that should be corrected before merge. Sequence Diagram(s)sequenceDiagram
participant PRSizeEvaluator
participant ExceptionRegistry
participant GovernancePathRules
PRSizeEvaluator->>ExceptionRegistry: validate exception entries
ExceptionRegistry->>GovernancePathRules: check changed paths
GovernancePathRules-->>ExceptionRegistry: allow or reject scope
ExceptionRegistry-->>PRSizeEvaluator: apply active exception
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 10.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 10 functions across 3 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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CodeAnt Nitpicks1 code suggestion1. The new validation rejects active ceilings above the absolute tier, contradicting the existing evaluation comment that exception ceilings may exceed that tier.Comment mismatch · |
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Actionable comments posted: 2
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Inline comments:
In `@config/pr-size-exceptions.json`:
- Line 178: Update the reason value for the PR `#596` exception to replace the
incorrect issue reference `#625` with `#532`, while preserving the rest of the
rationale and exception metadata unchanged.
In `@tests/unit/tooling/checkPrSize.test.ts`:
- Line 546: Add a one-line `// QNBS-v3: ...` comment for each substantive test
case change in the `it.each` groups within the test file, including the
locations identified by the review. Ensure every comment states the change’s
reason, impact, or creative value, and do not add comments to formatting-only
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Fix all unresolved CodeRabbit comments on this PR:
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📒 Files selected for processing (5)
README.mdconfig/pr-size-exceptions.jsonscripts/check-pr-size.d.mtsscripts/check-pr-size.mjstests/unit/tooling/checkPrSize.test.ts
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Reviewed commit: f4ee8da267
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Codecov Report✅ All modified and coverable lines are covered by tests. 📢 Thoughts on this report? Let us know! |
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[check-pr-size] PR size is over the target tier (normal profile): 5 files, 411 meaningful lines, 2 commits — limit ≤8 files / ≤400 lines / ≤6 commits. Consider splitting into smaller, independently reviewable PRs. |
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User description
Summary
Why
Issue #625 hardens the exception mechanism against self-expansion and retroactive elevation. This PR does not redesign the trusted workflow boundary owned by #510.
Validation
pnpm exec vitest run tests/unit/tooling/checkPrSize.test.ts— 68 passedpnpm run ci:prepush— passedgit diff --check— passedScope
No runtime product behavior, #553 filesystem semantics, or #654 source was changed. The README test-count update is the mechanically required docs-truth correction reported by
ci:prepush.Summary by Sourcery
Harden pull-request size exception governance by enforcing absolute limits and preventing exceptions from modifying the controls that govern them.
New Features:
Bug Fixes:
Enhancements:
Documentation:
Tests:
CodeAnt-AI Description
Prevent PR-size exceptions from weakening the rules that govern them
What Changed
Impact
✅ Fewer PR-size governance bypasses✅ Consistent enforcement of 30-file, 3,000-line, and 15-commit ceilings✅ Historical exceptions no longer affect active pull requests💡 Usage Guide
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Summary by cubic
Harden PR-size exception governance per issue #625: active exceptions are now capped at the absolute ceiling (30 files, 3000 meaningful lines, 15 commits) and can no longer let a governed PR rewrite the files that govern it.
Behavior changes
config/pr-size-exceptions.json,scripts/ci-prepush-classifier.mjs,scripts/check-pr-size.mjs,scripts/check-pr-size.d.mts,.github/workflows/ci.yml) are rejected fromallowedPaths, and any PR touching them cannot use an exception.allowedPaths.status: "historical", preserving its recorded values without ever applying them.Written for commit d708ce4. Summary will update on new commits.
Summary by CodeRabbit
Documentation
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