screentinker 12c0004245 test(ci): OS-assigned ephemeral ports for subprocess suites — kill the port-collision flake (#176) ... The subprocess-booting test suites hand-picked fixed ports in a cramped ~3955-4021 range, and 156-schedule-read-path deviated to a RANDOM port (3900 + rand%90) that overlapped those fixed ports. Under CI load two servers could race on the same port, surfacing as flaky "no such table: devices" / "FOREIGN KEY constraint failed" (a server answering a request against a half-migrated or wrong DB). It's environmental — the suites pass locally and in isolation. Fix: a shared test/helpers/free-port.js (bind :0 on loopback, read the OS-assigned port, release) called in before() so every suite gets a guaranteed-unique ephemeral port — concurrent suites can no longer collide, and no one has to hand-assign ports. - Codemod converted 30 suites: const PORT = <fixed|random> -> let PORT (+ BASE) assigned via `PORT = await freePort()` at the top of before(). - 3 hand-fixed (different structure): 148-eviction-storm (lowercase `base`), boot-health (no before() — allocates PORT + a throwaway SEED_PORT inside the test, replacing the hardcoded 3894), totp-keyrotation (no before() — allocates at the test start before bootServer()). No fixed 39xx/40xx ports remain. Full server suite 435/435; the 4 hand-touched suites pass in isolation. Pure test-infra change — no app code touched.		2026-07-13 09:51:40 -05:00
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free-port.js	test(ci): OS-assigned ephemeral ports for subprocess suites — kill the port-collision flake (#176)	2026-07-13 09:51:40 -05:00