Charlie Marsh 15922a50aa Expand Linux spawn-helper lifecycle test coverage (#47613)
## What changed

Add real-child tests for parent-death signaling, large environment transfers, explicit file descriptor inheritance, and fallback when the helper exits before acknowledgement.

Introduce test-only pause points during environment transfer, reporting, and exec to verify that cancelling startup kills and reaps the helper. Cover cancellation after runtime shutdown and verify that the fallback reaper can reap an exited child while an earlier child remains alive.

Probe an actual helper launch before asserting native-helper behavior, and skip fixtures when their required procfs or pidfd support is unavailable.

GitOrigin-RevId: 5136dc242a91efd0596171266965f29903c6c970
2026-09-23 18:25:32 +00:00
2026-04-24 17:49:29 -07:00
2025-04-16 12:56:08 -04:00
2025-04-16 12:56:08 -04:00
2026-04-24 17:49:29 -07:00
2026-08-21 16:45:05 +00:00

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