test: isolate release fixtures and release holder leases cooperatively

[lidge-jun]

Summary

• Keep restart-lease fixtures inside case-owned parent/child homes, with explicit SQLite state and service port/config. Replace the holder's fixed sleep/kill with stdin-EOF release, acknowledgment and bounded exit/reap/drain checks. Collect every observed drain rejection by index; exclude only the exact cleanup-owned cancellation reason. Ordinary failed cleanup retains the sandbox; deliberate negative controls dispose only after verifying their exact expected failures and completed reaping/draining.
• Isolate injection-suggestion discovery through existing runtime/catalog cache seams. The no-write snapshot records nested/empty directories and exact bytes, narrowly exempts the actual regular runtime-cache file, and rejects links. Environment is captured per case; both cache owners reset during cleanup.
• Preserve all original lease and injection behavior assertions and production 10-second reacquisition / 30-second stale-lock grace. The PR changes only two fixtures and their plan; no production, dependency or workflow changes.

Verification

Current head: 095fa0fe798565e0c813411f0eb6d937c258002c, rebased onto coordinator-requested dev 9f23b1fa9b3f1e515f2085c25ab09f65a1397b30.

• Current composition: bun run test tests/codex-integration/injection-model-suggest-routes.test.ts tests/update/update-restart-lease.test.ts --parallel=1 — 25 pass / 0 fail, 291 assertions, 35.60s, exact before/after HEAD above. Observed lease then injection; the runner uses --isolate, so direct cache/reset controls supply cache-cleanup proof.
• Red evidence: original lease trio on untouched dd9a980e gave 1 pass / 2 fail; repaired trio 3/0. Nested directory setup reproduced EISDIR before the snapshot repair. Restoring module-time environment capture failed the new restoration control. Delayed second drain rejection failed the earlier collector (0/1) before the aggregation fix.
• Corrected drain/retention controls: 9 pass / 0 fail, 135 assertions, including later independent rejection, unrelated AbortError, drain timeout, failed graceful release, and forced reaping. Exact-error assertions cannot consume extra failures.
• On the rebased composition, bun run typecheck, bun run privacy:scan, bun run structure:check, the file-size guard and git diff --check passed. All original expectation statements remain; private coordination identifiers are absent from the publication range.
• Independent local code/security review: PASS after both cleanup corrections. Coordinator reviewer closure and fresh applicable exact-head hosted CI remain required. Previous 8e9a956cdd CI is not evidence for this head.
• Bounded no-service writer→victim→authority removed→identical bytes restored control: 1 test / 1,139 assertions, 48 observations across 16 mapped historical scenarios. Paths were owned, real-home protection unchanged, process/server operations refused, and cleanup confirmed.

The historical broad run is not waived: 29,537 pass / 104 skip / 21 fail / 1 error. The controlled experiment demonstrates shared-authority contamination is sufficient for the other five files' failure classes. It does not identify the original writer/worker, rerun their original HTTP/lifecycle cases, or repair those producer/victim fixtures. A writer-capable launchd fixture was found in source; interleaved old output cannot uniquely attribute the historical revision/home to it. Those limits remain for the coordinator's final regression decision.

Resource exception: concurrent worktrees and explicit restrictions rule out another broad local suite/import graph, duplicate GUI build/test, or manual all-platform run. Focused commands used owned temporary directories and the existing shared user test lock. Native Windows stdin/process behavior is not established by macOS execution. Coordinator owns merge and final integrated/platform regression and release.

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed.
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

Summary by CodeRabbit

• Tests
  • Improved isolation for lease and injection-model tests by restoring environment and cache state between cases.
  • Strengthened filesystem checks to detect changes to file contents and directory structure, and to reject unsupported entries.
  • Added bounded cleanup checks for test subprocesses, including verification of release outcomes and reporting of cleanup failures.
  • Added coverage for isolation, cache cleanup, and failure scenarios.
• Documentation
  • Added test-fixture isolation guidance and verification criteria.

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📥 Commits

Reviewing files that changed from the base of the PR and between 8e9a956 and 095fa0f.

📒 Files selected for processing (2)

• devlog/_plan/261004_fixture_isolation_stabilization/010_fixtures.md
• tests/update/update-restart-lease.test.ts

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📝 Walkthrough

Walkthrough

The pull request changes two test fixtures. Injection-model tests now verify environment, cache, and filesystem snapshot isolation. Restart-lease tests now use sandboxed authority paths, tracked Bun subprocesses, and bounded cleanup checks. Plan documents record scope and verification requirements.

Changes

Test fixture isolation

Layer / File(s)	Summary
Injection-model fixture isolation devlog/_plan/261004_fixture_isolation_stabilization/000_plan.md, devlog/_plan/261004_fixture_isolation_stabilization/010_fixtures.md, tests/codex-integration/injection-model-suggest-routes.test.ts	The test captures and restores environment values per case, seeds and resets discovery caches, and checks recursive snapshots of directories and exact file bytes. New controls cover changed bytes, empty directories, file/directory replacement, the runtime-cache exemption, symlink rejection, cache resets, and environment restoration.
Restart-lease fixture isolation devlog/_plan/261004_fixture_isolation_stabilization/010_fixtures.md, tests/update/update-restart-lease.test.ts	The tests use sandboxed home and SQLite paths, track Bun subprocess output and cleanup state, and verify lease release and lock removal. Bounded teardown handles failed release, missing acknowledgments, and stream-drain errors. New controls check sandbox authority and cleanup outcomes.

Priority: ⬇️ Low

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Other

Merge Risk: 🔵 Low · up to 8e9a9

Lease tests can discard the sandbox needed to diagnose a failed release. Gate its removal on successful cleanup before merging.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 13.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 15 functions across 2 files. (2 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the test-fixture isolation and cooperative lease release changes.

Full details: Docstring Coverage

Explanation

Docstring coverage is 13.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 15 functions across 2 files. (2 skipped: 2 unsupported.)

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-03T21:20:24.393044Z	095fa0f	Draft marked ready

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Actionable comments posted: 1

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🤖 Prompt to fix review comments

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Inline comments:
Review comments at @tests/update/update-restart-lease.test.ts:
- Around line 388-417: Update cleanupChild to record successful cleanup only
after all release conditions pass without failures, and make afterEach retain a
sandbox unless every associated child is reaped, drained, and has proven
cleanup; do not rely on reaped and drained alone to authorize deletion.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: Repository: lidge-jun/opencodex/.coderabbit.yaml
• Review profile: ASSERTIVE
• Plan: Advanced
• Run ID: a24f4524-ebcc-4772-bd6c-f2514361e7f5

📥 Commits

Reviewing files that changed from the base of the PR and between 9f23b1f and 8e9a956.

📒 Files selected for processing (4)

• devlog/_plan/261004_fixture_isolation_stabilization/000_plan.md
• devlog/_plan/261004_fixture_isolation_stabilization/010_fixtures.md
• tests/codex-integration/injection-model-suggest-routes.test.ts
• tests/update/update-restart-lease.test.ts

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[lidge-jun]

Maintainer integration decision: integrate the corrected fixture isolation and teardown repair into dev under the owner-authorized stabilization task and maintainer-integration policy. This is not self-approval. Independent coordinator review PASS at 095fa0fe798565e0c813411f0eb6d937c258002c closes the multiple-drain-error finding and verifies the related root-retention guard. The earlier8e9review is retained as failed historical evidence, not reused as acceptance.

All four owned files were reviewed. Production lease timing and runtime code are unchanged. The helpers keep each case inside its own authority/home/sqlite/config/port, release real child leases through EOF/ack/reap/drain checks, retain every genuine drain rejection by index, and ignore only the exact cleanup-owned abort object. Failed ordinary cleanup retains its case; expected-failure controls must verify their exact full error set before disposal. Injection snapshots preserve file bytes/directories, reject links and use per-case environment/cache cleanup.

The delayed-second-error regression failed before correction;9cleanupcontrols passed afterward. The current-head full two-file Mac run executed all originals plus controls:25pass/291assertions. Typecheck/privacy/structure/ratchet/diff gates passed. The reviewed head contains current dev 9f23b1fa9b3f1e515f2085c25ab09f65a1397b30; the conflict-free union is its exact tree.

Historical48observations/16scenario mappings establish shared-authority contamination sufficiency, not exact historical-writer attribution or rerun/repair of all other original tests. The old21fail/1error is not waived. Native Windows and final integrated parallel regression/full-platform candidate CI remain pending.

The optional external CodeRabbit review context is still pending and is not counted as a passing review. Current-head independent review is complete and every currently published finding is resolved; post-merge/final review checks remain mandatory.

Hosted receipt: https://github.com/lidge-jun/opencodex/actions/runs/37154025071, attempt 1, pull_request, tested head 095fa0fe798565e0c813411f0eb6d937c258002c / base 9f23b1fa9b3f1e515f2085c25ab09f65a1397b30. Current reviewed dev base 9f23b1fa9b3f1e515f2085c25ab09f65a1397b30; conflict-free union tree 98c6c2f05364c8274d404ae5f6ecc56bb73450d2. All four Linux shards and selected gates/storage/API/Docker/keyring jobs succeeded. Docs-site, structure, npm-global and full-platform jobs were correctly unrequested for this fixed test/plan scope and are not counted as passing; final integrated lane=all remains required.