activity-core/tests/test_schedule_health.py

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"""ACTIVITY-WP-0014 T03: missed-fire detection verdict tests."""
from __future__ import annotations
from datetime import datetime, timedelta, timezone
from activity_core.schedule_health import evaluate_schedule_health
NOW = datetime(2026, 6, 23, 12, 0, tzinfo=timezone.utc)
def test_healthy_when_recent_fire_and_no_drops() -> None:
health = evaluate_schedule_health(
activity_id="a1",
missed_catchup_window=0,
last_fired_at=NOW - timedelta(minutes=5),
now=NOW,
expected_interval=timedelta(hours=1),
)
assert health.healthy is True
assert health.missed is False
assert health.reasons == []
def test_unhealthy_when_catchup_window_dropped_fires() -> None:
health = evaluate_schedule_health(
activity_id="a1",
missed_catchup_window=2,
last_fired_at=NOW - timedelta(minutes=5),
now=NOW,
)
assert health.missed is True
assert "2 fire(s) dropped" in health.reasons[0]
def test_unhealthy_when_last_fire_too_stale() -> None:
health = evaluate_schedule_health(
activity_id="daily",
missed_catchup_window=0,
last_fired_at=NOW - timedelta(days=2),
now=NOW,
expected_interval=timedelta(days=1),
)
assert health.missed is True
assert any("exceeding the expected" in r for r in health.reasons)
assert health.staleness == timedelta(days=2)
def test_within_tolerance_is_healthy() -> None:
health = evaluate_schedule_health(
activity_id="daily",
missed_catchup_window=0,
last_fired_at=NOW - (timedelta(days=1) + timedelta(minutes=5)),
now=NOW,
expected_interval=timedelta(days=1),
tolerance=timedelta(minutes=10),
)
assert health.healthy is True
def test_no_fire_recorded_for_due_schedule_is_unhealthy() -> None:
health = evaluate_schedule_health(
activity_id="daily",
missed_catchup_window=0,
last_fired_at=None,
now=NOW,
expected_interval=timedelta(days=1),
)
assert health.missed is True
assert "no recorded fire" in health.reasons[0]
def test_no_interval_and_no_fire_is_not_flagged() -> None:
# Without an expected interval we cannot assert a miss from absence alone.
health = evaluate_schedule_health(
activity_id="event-ish",
missed_catchup_window=0,
last_fired_at=None,
now=NOW,
)
assert health.healthy is True