"""Since when Steward has been watching without a break (#5441): a job's
Watch starts at its first run, holds across runs a minute apart, and starts
again after a gap long enough to mean Steward was not watching."""
from datetime import datetime, timedelta, timezone
from types import SimpleNamespace as NS

from steward.core.watch import GAP_S, Watch, watch

T0 = datetime(2026, 10, 9, 2, 0, tzinfo=timezone.utc)


def test_the_first_run_starts_the_watch_and_steady_runs_keep_it():
    w = Watch()
    assert w.tick(T0) == T0
    for minute in range(1, 30):
        assert w.tick(T0 + timedelta(minutes=minute)) == T0


def test_a_gap_longer_than_two_missed_runs_starts_it_again():
    w = Watch()
    w.tick(T0)
    assert w.tick(T0 + timedelta(seconds=GAP_S)) == T0          # just within
    back = T0 + timedelta(seconds=2 * GAP_S + 1)
    assert w.tick(back) == back                                   # Steward was away
    assert w.tick(back + timedelta(minutes=1)) == back


def test_each_job_has_its_own_watch_on_its_own_app():
    a, b = NS(), NS()
    assert watch(a, "x") is watch(a, "x")
    assert watch(a, "x") is not watch(a, "y")
    assert watch(a, "x") is not watch(b, "x")