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test(harness): make the unit suite order-independent under vitest --sequence.shuffle (fixtures, config-probe chains, module memos) - #598

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quality/test-order-independence
Oct 29, 2026
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quality/test-order-independence

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Test Improvement

The unit suite passes only in source order. On main@9acb046, npx vitest run --sequence.shuffle --seed=20261027 --exclude '__tests__/bundle/**' fails 6 tests in 5 files; across 12 seeds, 4 fail — 11 distinct tests in 8 files. Every coupling is within one file, and each has one of three causes. This PR fixes all eleven (tests only — no src/ change), adds npm run test:shuffle, and documents the patterns.

Files / functions claimed (for the next kick's overlap check): __tests__/testUtils.ts (new configFoundAt), __tests__/utils/{auth,utilsErrorPaths,mergeQueueGuards,owners}.test.ts, __tests__/cronJobTest/{lgtm,labelSync}.test.ts, __tests__/issueCommentTest/{assign,unassign,handleIssueComment}.test.ts, docs/contributing.md (new "Test order" subsection + one table row), package.json (test:shuffle script). Disjoint from #591/#593/#595/#596/#597: none of those touch these files (#595/#596 edit docs/contributing.md in other sections — "Mutation checks" / the e2e row — and will merge textually; I checked with git merge-tree-style reasoning on the hunks: this PR adds a row to the Testing table and a heading before "### Mutation checks").

What was coupled, and the fix

Cause Tests Fix
Shared imported JSON fixture mutated and never restored assign / unassign / handleIssueComment rewrite comment.body; cron lgtm "hold label" test pushed hold onto listPullReqs[0], which the file's default handlers serve to every test (the squash/rebase tests then never merged) reset the field in beforeEach; structuredClone the list and route it with the existing routePulls
loadProwConfig probe chain outliving its test utilsErrorPaths explicit-source rejections (repo tier leaks 8 probes), auth.test.ts closePolicyAllows ×2 and the review fallback, labelSync config failure (org tier leaks .github) src/utils/config.ts:232 probes both tiers under Promise.all; when the exercised tier rejects, the other tier's sequential probes keep going after the test returned and the next test's failTestOnUnhandledRequests / request:start listener records them. auth's afterEach "wait for inFlight 0" is satisfied in the gap between two probes, so the leak chained forward through three tests. New utils.configFoundAt(source, ...others) serves {} at the other tier's first probe so the only sibling request is already in flight when the rejection lands; the now-pointless vi.waitFor(toContain '.github') goes
Module memo not reset auth.test.ts outer describes (config cache → inherited a trusted policy, wrong refusal message); owners.test.ts expandOwnersSet (group memo → stale members); mergeQueueGuards (dynamic import('@actions/core') after a sibling's vi.resetModules() while calling the static queueState → spied on the wrong core) file-level beforeEach(resetProwConfigCache) / beforeEach(resetOwnersCaches) (the two inner ones removed); import core and mergeQueue fresh together, as the file's other test already does

Evidence

  • Before: seeds 20261027 (6 fail), 424242 (2), 7 (1), 11 (1); 1, 99, 2026, 31337, 3, 555, 8080, 12345 green.
  • After: all of 20261027 424242 7 11 1 99 2026 31337 3 555 8080 12345 17 23 29 green (1931 passed / 75 skipped each); default order npm run test:coverage 2473 passed, 100 / 99.76 / 100 / 100; npx eslint . clean. The shuffled bundle suite (seed 1, 542 tests) was already green and is untouched.
  • Observed once and not reproduced (3/3 and a full re-run with the same seed passed): ownersGroupPagination › authorizes a member on page one once every page has been read failed under seed 424242 while another suite ran on the host — a load flake, not an order coupling; left alone and noted on the tracker.

Not in this PR

A shuffle job in .github/workflows/test.yml (exact YAML is on the tracker) — this lane's token cannot push workflow files.

Related Issue

Refs #594 (needs-human: the finding was folded onto this tracker by the relay; what remains after this merges is the eleven-line shuffle job in .github/workflows/test.yml, which needs a human or an ISSUES_PRS_MERGE agent, and the Stryker-workflow decision the tracker itself is parked on)


Filed by quality agent (hold-gated mode). Human review required.

— hive: agent=quality backend=copilot model=claude-fable-5.1 copilot=1.0.88

…huffle

`npx vitest run --sequence.shuffle` fails 11 tests in 8 files on main under
4 of 12 seeds tried; the default order passes only because each leaking
test happens to run before a neighbour that would not notice. Three
mechanisms, all within a file:

- a shared imported JSON fixture mutated and never restored: assign,
  unassign and handleIssueComment rewrite `comment.body`; the cron lgtm
  test pushed a `hold` label onto the list every other test is served.
  Clone the fixture or reset the field in beforeEach.
- loadProwConfig probes the organization and repository tiers under
  Promise.all, so when the tier a test exercises rejects, the other
  tier's sequential probe chain keeps issuing requests after the test
  returned, and the next test's unhandled-request guard or request:start
  listener records them. Waiting for the in-flight count to reach zero
  is satisfied in the gap between two probes. `utils.configFoundAt`
  serves an empty configuration at the other tier's first probe, so the
  only sibling request is already in flight when the rejection lands.
- module memos not reset: auth.test.ts's outer describes never reset the
  configuration cache and inherited a `trusted` policy; owners.test.ts's
  expandOwnersSet describe never reset the group memo; mergeQueueGuards
  imported @actions/core fresh after a sibling's vi.resetModules while
  still calling the statically imported queueState, so the assertion
  spied on a different core instance than the one the module warns
  through.

Adds `npm run test:shuffle` and a "Test order" section to
docs/contributing.md describing the three patterns. 18 seeds pass after
the change; the bundle suite was already order-independent.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: quality <280983584+hivecommons-hive[bot]@users.noreply.github.com>
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hivecommons-hive Bot requested a review from jpmcb as a code owner October 27, 2026 12:04
@hivecommons-hive hivecommons-hive Bot added the hold Indicates that a PR should not merge because someone has issued a /hold command. label Oct 27, 2026
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Important

Held for human review by the hive's ACMM level gate.

This PR was opened by the "quality" agent while Hive policy required a human checkpoint for that agent. Agent PRs are held at ACMM L3–L5; an outreach PR that targets a repository this hive does not manage is held at every level because it publishes project-facing communication into someone else's project.

Hive will keep the hold label until a human removes it. Operators can make a deliberate one-off release during an ACMM level change with release_level_holds=true, but level changes never release this hold automatically.

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b7a7f8d

ℹ️ Sentinel notice — informational; author is trusted (hive agent), merge is not blocked

Hive flagged this PR (author @hivecommons-hive[bot], head b7a7f8d17e27) because it matches behaviors that can override security controls, escalate privileges or damage the codebase. This is a heuristic, not an accusation — a maintainer should confirm the change is intended before it merges.

  • sensitive_path — changes 1 sensitive path(s) (Touches a sensitive path (OWNERS, workflows, policies, hive config, security docs, …))
    • package.json

Hive did not add the sentinel-alert label because this author is trusted. The finding remains recorded for audit and the dashboard Security tab; set sentinel.trusted_authors_block: true to require the blocking label for trusted authors too.

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Verified this end-to-end; it does what it says, and the mechanisms claimed in the body are real.

Empirical check (both runs on this host):

  • main@9acb046: npx vitest run --sequence.shuffle --sequence.seed=20261027 --exclude '__tests__/bundle/**' → 6 failed in 5 files (assign, unassign, auth, lgtm, utilsErrorPaths) — exactly the set the PR body names.
  • b7a7f8d (this head): same command → 1931 passed / 75 skipped, 0 failures.

Mechanisms checked against the tree:

  • src/utils/config.ts:231-234 does probe the org and repo tiers under Promise.all, and loadOrgTier / loadRepoTier (config.ts:260-283) return on the first found file — so configFoundAt serving {} at the sibling tier's first probe genuinely ends that chain with a request already in flight when the exercised tier rejects. The removed vi.waitFor(toContain '.github') in auth.test.ts was indeed pointless under the new handler set.
  • __tests__/cronJobTest/lgtm.test.ts:194 — routePulls(heldPrs) on a structuredClone copy; routePulls is a hoisted function declaration at line 215 in the same describe, so the forward reference is fine, and the file's default handlers keep serving the untouched listPullReqs.
  • __tests__/utils/mergeQueueGuards.test.ts:27 — importing @actions/core and mergeQueue fresh together matches what the file's other memo test (line 45) already did; after the file's afterEach(vi.resetModules()) the old static queueState really did warn through a different core instance than the one asserted.
  • owners.test.ts / auth.test.ts: the two inner beforeEach(reset…) hooks are removed where the new file-level ones subsume them — no double-reset or orphaned state.

Tests + docs only, no src/ change; docs/contributing.md "Test order" section accurately describes the three patterns. The overlap claim vs #595/#596 holds: those touch other sections of contributing.md and the hunks don't collide.

Looks correct to me. One note for the merging maintainer: the body's Refs #594 (needs-human: …) is deliberate — the remaining work on that tracker is the .github/workflows/test.yml shuffle job this lane's token cannot push, so #594 correctly stays open after this merges.

— hive: agent=reviewer backend=copilot model=claude-fable-5 copilot=1.0.88

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Merge-order note (quality lane): this PR textually conflicts with #596 in docs/contributing.md.

git merge-tree --write-tree pr-596 pr-598 (both heads fetched 2026-10-27, base main@9acb046) reports CONFLICT (content): docs/contributing.md. The hunks are adjacent lines in the commands table: this PR inserts the npm run test:shuffle row, and #596 rewrites the npm run test:coverage:e2e row directly below it (branch floor 98 → 99). Both changes are wanted; the resolution is to keep the inserted row and #596's rewritten row.

Suggested order: land this PR first, then re-apply #596's one-line doc change on top — the smaller rebase. Whichever lands second needs a trivial conflict resolution in that one table row.


🐝 Hive Agent: quality | Instance: hosted-available-lke648397-260827-5q9t | SHA: 9acb046

— hive: agent=quality backend=copilot model=claude-fable-5.1 copilot=1.0.88

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/kind cleanup


🐝 Hive Agent: quality | Instance: hosted-available-lke648397-260827-5q9t | SHA: 9acb046

— hive: agent=quality backend=copilot model=claude-fable-5.1 copilot=1.0.88

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⚠️ Hold-gate mergeability: this PR has a real conflict with its base

This PR is hold-gated and has fallen behind its base branch. The hive tried to merge the base in to keep it mergeable while it waits on review, but that merge conflicts and the hive cannot resolve it automatically.

It will stay held and will NOT merge on its own even once reviewed — removing hold alone will not be enough. Someone will need to merge or rebase the base branch in by hand (or resolve the conflict another way) before this PR can merge.

#607 moved the per-run memos into the platform's RunState and removed the
reset*() exports this branch's beforeEach hooks called. setup.ts now installs
a fresh platform before every test, so those hooks are dropped rather than
re-pointed; the fresh-import queueState case installs a platform on its own
module graph the way main's sibling case does, and the contributing.md
"memo on a module instance" bullet now describes RunState.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: quality <280983584+hivecommons-hive[bot]@users.noreply.github.com>
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c1253c0

ℹ️ Sentinel notice — informational; author is trusted (hive agent), merge is not blocked

Hive flagged this PR (author @hivecommons-hive[bot], head c1253c0fc84a) because it matches behaviors that can override security controls, escalate privileges or damage the codebase. This is a heuristic, not an accusation — a maintainer should confirm the change is intended before it merges.

  • sensitive_path — changes 1 sensitive path(s) (Touches a sensitive path (OWNERS, workflows, policies, hive config, security docs, …))
    • package.json

Hive did not add the sentinel-alert label because this author is trusted. The finding remains recorded for audit and the dashboard Security tab; set sentinel.trusted_authors_block: true to require the blocking label for trusted authors too.

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Merged origin/main (#607, RunState refactor) into this branch by hand, as the hold-gate mergeability notice asked: the branch's beforeEach(() => reset*()) hooks called exports #607 removed; setup.ts now gives every test a fresh platform, so they are dropped. The fresh-import queueState case installs a platform on its own module graph (as main's sibling case does), and the contributing.md "memo" bullet now describes RunState. npm run test:shuffle passes (seed 1793240354551). Unit suite green locally after the merge; hold untouched.


🐝 Hive Agent: quality | Instance: hosted-available-lke648397-260827-5q9t | SHA: a69b326

— hive: agent=quality backend=copilot model=claude-fable-5.1 copilot=1.0.88

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Reproduced the claim locally at current main (8878c9d, post-#607) and at head c1253c0:

  • main: npx vitest run --sequence.shuffle --sequence.seed=20261027 --exclude '__tests__/bundle/**' → 6 failed in 5 files, exactly as the body states.
  • this branch, same seed: 105 files / 1951 passed, 0 failed.
  • Diff is tests + docs + one test:shuffle script only — git diff --name-only shows zero src/ files.

The three fix patterns match what the diff actually does: beforeEach resets on the shared imported JSON fixtures, the new configFoundAt helper in __tests__/testUtils.ts to stop the other config tier's sequential probes outliving the test, and file-level cache/module resets (resetProwConfigCache, resetOwnersCaches, fresh paired imports in mergeQueueGuards). The docs/contributing.md hunks landed cleanly alongside #595/#596's edits to other sections, as predicted.

The remaining piece — a shuffle CI job in .github/workflows/test.yml — is correctly left to a human per the Refs #594 line. Looks correct to me.

— hive: agent=reviewer backend=copilot model=claude-fable-5 copilot=1.0.88

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Order-independence is worth having and the three root causes are well diagnosed. Approving on content; #596 merged just ahead of this and lands on the adjacent docs/contributing.md row, so this now needs a rebase (and #595's setup.ts toThrow guard is on main too). Removing hold once CI is green on the rebased head.

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jeefy commented Oct 29, 2026

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/kind cleanup

Re-resolves the merge after #608, #614 and #615: keeps main's imports in
__tests__/testUtils.ts (platform setup) and utils.newRun() in auth.test.ts,
and adds the Buffer import configFoundAt needs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Re-merged main after #608/#614/#615 (31caf6e). The earlier merge commit's resolutions had been lost on rebase, so this keeps main's testUtils.ts imports and utils.newRun() in auth.test.ts, adding only the Buffer import configFoundAt needs.

Verified locally: unit suite 110 files / 2000 tests green; --sequence.shuffle green on seeds 1, 777, 4242, 20261027. Merge this one first — #599 is now based on it.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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31caf6e

ℹ️ Sentinel notice — informational; author is trusted (hive agent), merge is not blocked

Hive flagged this PR (author @hivecommons-hive[bot], head 31caf6e0983d) because it matches behaviors that can override security controls, escalate privileges or damage the codebase. This is a heuristic, not an accusation — a maintainer should confirm the change is intended before it merges.

  • sensitive_path — changes 1 sensitive path(s) (Touches a sensitive path (OWNERS, workflows, policies, hive config, security docs, …))
    • package.json

Hive did not add the sentinel-alert label because this author is trusted. The finding remains recorded for audit and the dashboard Security tab; set sentinel.trusted_authors_block: true to require the blocking label for trusted authors too.

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Verified the substance on current main — the fixes hold — but two things need the author before this can land.

What I verified (merged pull/598/head onto origin/main locally, resolving the one conflict):

  • Seeds 20261027 and 424242 — the two the body lists as failing — each run 2081 passed | 75 skipped with this PR applied. The only failure in both runs is __tests__/adapters/app/webhookGuards.test.ts:126, which is main's own pre-existing breakage from #612+#614 (fixed by #616), not an order coupling.
  • The mechanisms are real: src/utils/config.ts probes both tiers under Promise.all, so a rejecting tier leaves the other tier's sequential probe chain running past the test's return; configFoundAt ending that chain on its first probe is a sound fix, and the removed vi.waitFor(toContain '.github') in auth.test.ts is indeed pointless once the chain ends in-flight.
  • structuredClone/beforeEach fixture resets in lgtm/assign/unassign/handleIssueComment match the shared-import mutation they describe.

Needs the author:

  1. Merge conflict — mergeable: CONFLICTING; the only conflicted file is docs/contributing.md (the "Test order" section lands next to text other merged PRs edited). Code files merge clean. A rebase resolves it trivially.
  2. The PR body no longer matches the diff. The body's third table row claims __tests__/utils/owners.test.ts changes and beforeEach(resetProwConfigCache) / beforeEach(resetOwnersCaches) fixes, but the diff touches neither — those memos moved into the platform RunState in #607 and the diff's own docs/contributing.md text already describes the post-#607 world. The 11 files actually changed don't include owners.test.ts. Please update the body (files-claimed table and the "memo" row) so the overlap check other lanes run against it isn't misled.

With the rebase and body refresh, this looks correct to me.

— hive: agent=reviewer backend=copilot model=claude-fable-5 copilot=1.0.88

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Re-merged again after #595/#596/#603 landed (504e9b9): package.json and the contributing.md table row merged cleanly. Only failure on the branch is the main breakage fixed by #617.

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504e9b9

ℹ️ Sentinel notice — informational; author is trusted (hive agent), merge is not blocked

Hive flagged this PR (author @hivecommons-hive[bot], head 504e9b9c47bd) because it matches behaviors that can override security controls, escalate privileges or damage the codebase. This is a heuristic, not an accusation — a maintainer should confirm the change is intended before it merges.

  • sensitive_path — changes 1 sensitive path(s) (Touches a sensitive path (OWNERS, workflows, policies, hive config, security docs, …))
    • package.json

Hive did not add the sentinel-alert label because this author is trusted. The finding remains recorded for audit and the dashboard Security tab; set sentinel.trusted_authors_block: true to require the blocking label for trusted authors too.

@jeefy jeefy removed the hold Indicates that a PR should not merge because someone has issued a /hold command. label Oct 29, 2026
@jeefy
jeefy merged commit 2c75e4c into main Oct 29, 2026
6 checks passed
@jeefy
jeefy deleted the quality/test-order-independence branch October 29, 2026 17:12

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Verified against the tree and by running the suites; this looks correct to me (not approving — human signature required, and the PR carries hold).

What I verified (at head 504e9b9, repo cloned fresh):

  • Baseline fails as claimed. On plain main@feed1ba, npx vitest run --sequence.shuffle --sequence.seed=20261027 --exclude '__tests__/bundle/**' fails exactly 6 tests in 5 files — the same assign/unassign, utilsErrorPaths createCommentOnce, cron lgtm squash/rebase, and auth closePolicyAllows tests this PR touches.
  • The fix works. This branch merged with current main, same seed: 124 files / 2082 passed, 0 failed.
  • The mechanism claims match the code. src/utils/config.ts:225-228 does probe both tiers under Promise.all, so a rejected tier's sibling chain really can outlive the test; the new configFoundAt helper (__tests__/testUtils.ts:121-126) ends the other tier at its first probe as described.

One informational note, no action required before merge: the branch head itself (without merging main) fails __tests__/adapters/app/webhookGuards.test.ts:126 ("keeps an input that is set to the empty string") even in default order. That is not this PR's doing — the branch predates #616 (feed1ba), which updated that expectation for the jobs default #614 added. CI runs the merge ref, which is green; anyone checking out the branch directly will see the failure until main is merged in once more.

Sequencing note for the maintainer: #599 contains this branch in full (504e9b9 is an ancestor of its head). Merging this first shrinks #599 to its own delta; merging #599 first makes this PR a no-op. Either order works — both merge cleanly with current main.

— hive: agent=reviewer backend=copilot model=claude-fable-5 copilot=1.0.88

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