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test: cover cooldown boundary #13

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test: cover cooldown boundary #13

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17 changes: 17 additions & 0 deletions 6_Server/test_consensus.py
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Original file line number Diff line number Diff line change
Expand Up @@ -52,3 +52,20 @@ def test_cooldown_suppresses_repeat() -> None:
eng.ingest(NodeTrigger("a", **A, t=23.0, ratio=9.0))
eng.ingest(NodeTrigger("b", **B, t=23.5, ratio=7.5))
assert eng.ingest(NodeTrigger("c", **C, t=24.0, ratio=8.1)) is None


def test_cooldown_boundary_allows_repeat_at_exact_limit() -> None:
eng = ConsensusEngine(quorum=3, window_sec=5.0, cooldown_sec=30.0)
eng.ingest(NodeTrigger("a", **A, t=20.0, ratio=9.0))
eng.ingest(NodeTrigger("b", **B, t=21.0, ratio=7.5))
assert eng.ingest(NodeTrigger("c", **C, t=22.0, ratio=8.1)) is not None

# Cooldown suppresses repeats while elapsed time is strictly less than
# cooldown_sec; exactly cooldown_sec after the last alert is allowed.
eng.ingest(NodeTrigger("a", **A, t=50.0, ratio=9.0))
eng.ingest(NodeTrigger("b", **B, t=51.0, ratio=7.5))
alert = eng.ingest(NodeTrigger("c", **C, t=52.0, ratio=8.1))

assert alert is not None
assert alert.triggered_at == 52.0
assert alert.node_ids == ["a", "b", "c"]