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test(windows): eliminate final coverage races

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Tianyi Cui
2026-08-09 05:03:18 +08:00
parent 91cae30fc5
commit 2ce8d88a4d
6 changed files with 47 additions and 15 deletions
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.agents/notes/implemented/process/2026-08-08-native-windows-pull-request-ci.md
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@@ -48,6 +48,8 @@ The follow-up exact-head run passed all 10,937 instrumented tests and narrowed t
The next run reached the repaired branches but one real PowerShell executor composition case timed out at Vitest's five-second ceiling before the coverage report. That fixture had configured the product timeout to the same five seconds as the test timeout, leaving no budget for the executor to return either its owned result or its owned timeout classification under instrumentation. The command now has a ten-second product budget and the integration test a fifteen-second ceiling; its exit code, output, and resolved-timeout assertions are unchanged.
The following exact-head run passed all 10,938 instrumented tests and isolated four remaining locations whose existing fixtures depended on host scheduling. The E2B service fixture now injects and observes an immediate automatic terminal-release rejection before proving disposal retries it. The pi-ai discovery fixture drives cancellation from a controlled response body read instead of racing a local socket timer, and the persistent-bash fixture makes an incremental PTY delta the only recoverable output before asserting the rendered fallback. These cases exercise the supported branches directly on every host; the coverage inventory and denominator remain unchanged.
POSIX mode bits, chmod-based unreadability, and chmod-based writer-lock refusal do not exist as equivalent Windows facilities. Those acceptance cases remain enforced on POSIX and are skipped on Windows; content, atomic replacement, symlink safety, rollback and recovery through platform-independent filesystem conflicts, and native Windows long-path behavior remain covered. Only intrinsically POSIX source arms carry narrow, explained denominator ignores; no source file or platform-independent branch is excluded from Windows coverage to accommodate these differences.
Wine-only infrastructure is absent from the supported workflow: there is no apt-cache producer, compatibility script, hoisted snapshot install, Windows Node download, or local `check:windows-wine` command. The [archived Wine experiment](../../archived/process/2026-07-27-wine-windows-gates-experiment.md) remains historical evidence for its measured latency and fidelity trade-offs, not a current execution path.