def test_intersection_entire(self):
now = datetime.now()
tp1 = TimePeriod(now, now + timedelta(hours=1))
tp2 = TimePeriod(now - timedelta(minutes=10),
now + timedelta(minutes=70))
assert tp1.intersection(tp2).duration == timedelta(minutes=60)
assert tp2.intersection(tp1).duration == timedelta(minutes=60)
def test_intersection_none():
now = datetime.now()
tp1 = TimePeriod(now, now + timedelta(hours=1))
tp2 = TimePeriod(now - timedelta(hours=1), now)
assert tp1.intersection(tp2) is None
assert tp2.intersection(tp1) is None
def test_intersection_start():
now = datetime.now()
tp1 = TimePeriod(now, now + timedelta(hours=1))
tp2 = TimePeriod(now - timedelta(minutes=10), now + timedelta(minutes=50))
assert tp1.intersection(tp2).duration == timedelta(minutes=50)
assert tp2.intersection(tp1).duration == timedelta(minutes=50)
def test_intersection_none():
now = datetime.now()
tp1 = TimePeriod(now, now + timedelta(hours=1))
tp2 = TimePeriod(now - timedelta(hours=1), now)
assert tp1.intersection(tp2) is None
assert tp2.intersection(tp1) is None