def test_last_week_of_month_on_offset(self, n, weekday, date, tz):
# GH 19036, GH 18977 _adjust_dst was incorrect for LastWeekOfMonth
offset = LastWeekOfMonth(n=n, weekday=weekday)
ts = Timestamp(date, tz=tz)
slow = (ts + offset) - offset == ts
fast = offset.is_on_offset(ts)
assert fast == slow
def test_is_on_offset(self, case):
weekday, dt, expected = case
offset = LastWeekOfMonth(weekday=weekday)
assert offset.is_on_offset(dt) == expected