Files
everything-claude-code/tests/lib
Jamkris 5acb01a276 test(lib): concurrent writeBridgeAtomic + tmp-cleanup regression
Two regression tests pin down the previous two commits' atomic-rename
fixes:

1. **concurrent writes don't throw ENOENT or corrupt the file** —
   spawns two child Node processes (`tests/__tmp_bridge_writer.js`
   created in-test, cleaned up in finally) that each call
   `writeBridgeAtomic(sid, …)` 200 times against the same session
   ID with independent payloads. Asserts both subprocesses exit 0
   (the previous implementation produced ENOENT on roughly 50% of
   rename calls, all swallowed by the in-test catch) and the final
   bridge file is parseable JSON belonging to one of the two writers
   (last-writer-wins is fine; the contract is *no corruption* and
   *no rename ENOENT*, not data preservation).

2. **tmp file cleanup on rename failure** — pre-creates a directory
   at the target bridge path so `renameSync(tmp, target)` fails,
   calls `writeBridgeAtomic`, asserts the call throws AND that no
   tmp file with the writer's `pid.<nonce>.tmp` prefix is left
   behind in `os.tmpdir()`. The previous code had no cleanup; the
   fix's `try/catch + unlinkSync` keeps tmpdir from accumulating
   orphan files across repeated rename failures.

The first test deliberately writes independent payloads from each
subprocess so this regression doesn't try to claim a property the
fix doesn't actually deliver (read-modify-write race in the caller
is a separate issue and out of scope per PR body).

Test count: 12 → 14 in `tests/lib/session-bridge.test.js`;
`npm test` green; `npm run lint` clean.
2026-05-19 04:57:10 -04:00
..