import datetime as dt
import importlib.util
from pathlib import Path

MODULE = Path(__file__).parents[1] / "tools/check_admission_freshness.py"
spec = importlib.util.spec_from_file_location("freshness", MODULE)
freshness = importlib.util.module_from_spec(spec)
spec.loader.exec_module(freshness)


def record(state="verified", status="pass", risk="open"):
    return {
        "checked_at": "2026-07-26T18:00:00Z",
        "readiness_state": state,
        "checks": {"compatibility": {"status": status}},
        "residual_risks": [{"risk": "single node", "status": risk}],
    }


def test_verified_may_retain_explicit_open_risk():
    now = dt.datetime(2026, 7, 26, 19, tzinfo=dt.timezone.utc)
    assert freshness.assess(record(), now, 24) == []


def test_production_approval_fails_closed():
    now = dt.datetime(2026, 7, 26, 19, tzinfo=dt.timezone.utc)
    failures = freshness.assess(record("production-approved", "unknown"), now, 24)
    assert len(failures) == 2


def test_stale_evidence_fails():
    now = dt.datetime(2026, 7, 28, 19, tzinfo=dt.timezone.utc)
    assert "evidence is stale" in freshness.assess(record(), now, 24)