from fin_hub.services.alerts import evaluate_budget_alerts
from fin_hub.services.runway import compute_runway


def test_compute_runway_below_threshold():
    runway = compute_runway(current_balance=6000, monthly_burns=[2000, 2200, 2100], alert_threshold_months=3.0)
    assert runway.months_remaining < 3.0
    assert runway.below_threshold is True


def test_budget_alerts_include_runway_and_utilisation():
    runway = compute_runway(current_balance=6000, monthly_burns=[2000, 2200, 2100])
    alerts = evaluate_budget_alerts(runway=runway, allocated=10000, spent=8500)
    codes = {alert.code for alert in alerts}
    assert "runway_below_threshold" in codes
    assert "budget_pressure" in codes