def test_minute_back():
rate = Rate('rate(5 minute)')
rate.now = datetime(year=2018,
month=2,
day=11,
hour=12,
minute=30,
second=20)
expected = [datetime(year=2018, month=2, day=11, hour=12, minute=25)]
assert rate.get_previous() == expected
def test_hours_back_slice():
rate = Rate('rate(2 hours)')
rate.now = datetime(year=2018,
month=2,
day=11,
hour=10,
minute=30,
second=20)
expected = [
datetime(year=2018, month=2, day=11, hour=6),
datetime(year=2018, month=2, day=11, hour=4),
datetime(year=2018, month=2, day=11, hour=2),
]
assert rate.get_previous(count=3, start=2) == expected