fix(claude): isolate collision-test broker pipe names on Windows - #234
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All four collision tests used thread ids t-perm-dup-1..4, which truncate to the same 8-char tag t-perm-d. On Windows every test then built the same named pipe \\.\pipe\openmausbot-perm-<pid>-t-perm-d; a lingering pipe from a prior test made the next broker listen() fail with EADDRINUSE, surfacing as connect ENOENT in the cross-connection test (CI run 32138546814). Rename the thread ids to t-dup-1..4 so each test gets a unique pipe name, and add a platform-independent assertion that the four ids yield distinct permissionSocketPath() values so a future tag re-collision fails deterministically instead of as a timing-dependent Windows flake. Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
Code review found the tag-uniqueness assertion was drift-coupled: it hardcoded the four thread ids without wiring them to the tests that use them, so a revert of the rename (back to t-perm-dup-N, all truncating to the same tag) would still pass the assertion silently. Add a COLLISION_THREAD_IDS constant used by both the four collision tests and the assertion, so any future rename flows through the deterministic guard. Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
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Included review availability: Your plan includes up to 3 reviews per rolling hour; 1 remains after this review. 📝 WalkthroughWalkthroughThe change adds a plan and test updates that assign unique thread IDs to four permission-broker collision tests. The tests verify distinct truncated socket paths while preserving existing collision assertions. Production code remains unchanged. ChangesPermission collision test isolation
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to This localized test-only change isolates Windows pipe names and adds a cross-platform uniqueness assertion; no actionable merge-blocking risk remains after normal checks and review. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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`@docs/plans/2026-08-18-002-fix-windows-pipe-name-collision-in-collision-tests-plan.md`:
- Line 29: Update the production-code statement in the plan to use probabilistic
wording: replace “never hits this” with “is unlikely to hit this in normal
operation,” while preserving the note that eight-character truncation remains a
latent collision risk.
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docs/plans/2026-08-18-002-fix-windows-pipe-name-collision-in-collision-tests-plan.mdserver/drivers/claude.test.ts
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Address PR review feedback (milind-soni#234) - CodeRabbit noted the plan claimed the production code 'never hits' the tag-collision class while also calling the 8-char truncation a latent risk. Align the wording with the plan's own risk assessment.
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Verified against the plan doc and source: all four collision tests move to t-dup-1..4 (unique 8-char tags), no production files touched, and the new deterministic tag-uniqueness assertion guards future re-collisions cross-platform. Checked permissionSocketPath truncation in server/drivers/claude.ts — tags are distinct and collide with none of the existing test thread ids (t-perm-abc, t-perm-stop). Green CI on all three platforms. Ship it.
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What changed
The four ask-id-collision tests used thread ids
t-perm-dup-1..4, which all truncate to the same 8-char tag (t-perm-d) inpermissionSocketPath(). On Windows that gave every test the same named pipe (\\.\pipe\openmausbot-perm-<pid>-t-perm-d), so a pipe still held by a prior test made the next broker'slisten()fail withEADDRINUSE— surfacing asconnect ENOENTin the cross-connection test.The thread ids are renamed to
t-dup-1..4(each truncates to a unique tag), and a platform-independent assertion verifies the four ids yield distinctpermissionSocketPath()values, so a future tag re-collision fails on every platform instead of as a timing-dependent Windows flake. The tests and assertion read from oneCOLLISION_THREAD_IDSconstant so they cannot drift apart.Why
The
typecheck + test (windows-latest)CI job failed on PR #230 atdenies a colliding ask id from a second connection on the same brokerwithconnect ENOENT. The job log shows the real cause:permission broker unavailable ... listen EADDRINUSE: address already in use. On POSIXunlinkSyncbeforelisten()clears the old socket file, so the collision never fired; on Windows a named pipe is not a filesystem entry, so the OS-held pipe name from the prior test blocked the next broker. The pre-existing broker tests never hit this because their thread ids truncate to distinct tags.How it was verified
pnpm exec vitest run server/drivers/claude.test.ts— 33 tests, 32 pass + 1 skip (the Windows-only pipe-naming test) on macOS.pnpm typecheck— clean.pnpm teston macOS — vitest, broker:test, updater, and packaged-server all pass.Screenshots (UI changes)
N/A — backend test change only.
Checklist
pnpm typecheckandpnpm testpass locallydist-server/edits (it's build output)shell: true/ cmd.exe string-buildingSummary by CodeRabbit
Bug Fixes
Tests
Documentation