Upstream shared_preferences_windows and _linux write the whole preference
document with a bare `writeAsStringSync`. That opens with the default
`FileMode.write`, which truncates the live file before writing it, so every
single preference write has a window in which the only copy on disk is empty
or half-written. A crash, power loss, forced reboot or antivirus interception
inside that window leaves a document that fails to parse on every subsequent
launch — and the store holds the credential-vault key, so the loss is not
recoverable by rewriting it. This is the corruption class behind #1732; the
recovery path already landed is a band-aid over it.
Vendor both packages under packages/ — the convention saf_util and
wakelock_plus already follow — and stage, flush, then rename over the target.
The flush has to precede the rename or it could publish contents that were
never committed, the same corruption by another route. Staging uses one fixed
sibling name rather than a stamped one, because the file is a plaintext copy
of the vault key, tracker refresh tokens and Seerr cookies; it is created in
the target's own directory so rename stays on one volume and the mode matches
what the canonical file would have had, and a stale one is swept once the
canonical document has been read cleanly. Both deltas are marked in-source and
in provenance.json with the refresh contract.
Atomicity is proven, not asserted. A hard link to the store observes the old
document after a write, which only holds when the directory entry was replaced
— truncate-in-place would have rewritten the shared inode, and that test does
fail against unpatched upstream. Upstream's own suites still pass unchanged in
both packages and now run in CI, so the patch keeps the contract it inherited.
Windows `MoveFileExW` replacement semantics cannot be proven on a POSIX runner
or a memory file system, so they get their own test on the existing
windows-latest job, including replacement while a reader holds the file open —
antivirus and Search Indexer both do.
The Dart suite spent 77% of its cost compiling one isolate per test file
while `flutter test` used half the cores, and every Maestro flow replayed
a full Jellyfin onboarding before its first real assertion.
- Add scripts/run_tests.sh, which runs `flutter test` with -j set to the
cores the process may actually use instead of the ncpu/2 default.
Measured on 8 cores: 190s -> 136s; -j 12 regresses to 165s, so it scales
to the core count rather than hard-coding one. CI and CONTRIBUTING use it.
A cgroup v2 quota, a cgroup v1 quota, and the cpuset/affinity nproc
reports can each be the binding limit independently, so the detector
takes the smallest; trusting whichever it found first would oversubscribe
4x on a container holding an 8-CPU quota while pinned to 2. Covered by
scripts/test_run_tests.py, which the ci_guard_checks.sh glob picks up.
- Add .maestro/subflows/ensure_onboarded.yaml: cold-start the app and only
onboard when no session is stored. Flows that just need a signed-in Home
use it; 02_onboarding_home, 08_logout, 09_download_offline_playback and
the profile regressions keep clearing state. 59s -> 16s per flow.
- Guard onboarding's two optional taps behind visibility checks. A missed
`optional: true` tap still runs the full element search, costing 3.0s
and 7.8s per onboarding to find nothing.
- Disable device animation scales in run_maestro.py, restored by the
existing cleanup path. CI's emulator got this from the runner flag;
physical devices never did.
- Shorten the watch_together setup-timeout replacement from 500ms to the
10ms the same file already proves sufficient, and shorten the retry
backoff at the one site that missed it: 8.04s -> 1.59s of execution.
- Make the LAN discovery waits deadline-based and resend the beacon while
polling. Loopback UDP drops datagrams under load, which timed out a
wait that could never be satisfied; this was the suite's one flaky test.
- Fix 08_logout, which searched for "Logout" and "Are you sure you want to
logout?" after both strings became "Log out". The flow had been failing
and aborting the suite before 09 ever ran.
flutter test 190s -> 131s. Maestro's Android suite 621s -> 385s across the
eight flows the baseline reached, and now runs all nine green.
Introduces shared seams for paginated views, D-pad reorder, media control
routing, async singletons and the device method channel, then points the
open-coded copies at them.
Also removes unused models and duplicated provider/server plumbing, folds
the twice-implemented artifact store in the server, and factors the
repeated Flutter toolchain prologue in CI into a composite action.
edde746