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derrynknife merged 1 commit into from
Oct 16, 2026
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A system held perfect is compared to rounding #361

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5 changes: 3 additions & 2 deletions repyability/tests/test_inspection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -300,8 +300,9 @@ def test_importance_is_averaged_over_the_interval():
# Every system failure has both failed and both critical.
assert rbd.criticality_importance()["a"] == pytest.approx(1.0)
assert rbd.fussell_vesely()["a"] == pytest.approx(1.0)
# Held working, "a" makes the system perfect.
assert rbd.mean_availability(working_nodes=["a"]) == 1.0
# Held working, "a" makes the system perfect (to rounding: the mean is
# worked out numerically, and some numpy builds sum it a unit short).
assert rbd.mean_availability(working_nodes=["a"]) == pytest.approx(1.0)


def test_the_cost_rate_trades_tests_against_hidden_downtime():
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