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test(ha-heartbeat-committed-propagation): verify vote floor consumes heartbeat-raised committed safely (task 3.2)

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Test-only: exercises the real ha_vote_self_freshness/handle_request_vote gate.
A heartbeat raise via ha_observe_heartbeat_committed lifts the floor to
max(durable=5, raised=9); candidate at 7 denied, at 9/12 granted; a lower
heartbeat never lowers it. Discriminating constants fail under either regression
(floor->durable-only or fold->min). No production/vote-path change (Req 3.2).
123/0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Rongsong Shen 2026-06-20 12:31:04 +00:00
parent d534f83e46
commit 3b4656228e
4 changed files with 276 additions and 1 deletions
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.kiro/specs/ha-heartbeat-committed-propagation/tasks.md
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@ -39,7 +39,7 @@
- _Requirements: 1.1, 3.4_
- _Boundary: primary_heartbeat_fn_
- _Depends: 1.2_
- [ ] 3.2 Verify the vote-freshness floor consumes the fresher value safely
- [x] 3.2 Verify the vote-freshness floor consumes the fresher value safely
- Add an integration test proving the existing freshness gate, with `last_known_committed_lsn` raised by a heartbeat (via `ha_observe_heartbeat_committed`), rejects a vote candidate whose last-log LSN is below the raised floor and accepts one at/above it — confirming the floor formula `max(durable_floor, last_known_committed_lsn)` is read unchanged and is never lowered by this feature. No production change to the vote path.
- Observable: the test shows the candidate-below-floor rejected and candidate-at/above-floor accepted after a heartbeat raise, and no edit to the floor formula.
- _Requirements: 3.2_