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from datetime import timedelta, date
import pytest
from boltons.timeutils import daterange
def test_daterange_years():
new_year = date(2017, 1, 1)
bit_rollover = date(2038, 1, 19)
new_years_remaining = daterange(new_year, bit_rollover, step=(1, 0, 0))
assert len(list(new_years_remaining)) == 22
y2025 = date(2025, 1, 1)
bakers_years_til_2025 = list(daterange(new_year, y2025, step=(1, 1, 0)))
assert len(bakers_years_til_2025) == 8
assert bakers_years_til_2025[-1] == date(2024, 8, 1)
assert bakers_years_til_2025[-1] == date(2024, 8, 1)
years_from_2025 = list(daterange(y2025, new_year, step=(-1, 0, 0),
inclusive=True))
assert years_from_2025[0] == date(2025, 1, 1)
assert years_from_2025[-1] == date(2017, 1, 1)
def test_daterange_years_step():
start_day = date(year=2012, month=12, day=25)
end_day = date(year=2016, month=1, day=1)
dates = list(daterange(start_day, end_day, step=(1, 0, 0), inclusive=False))
expected = [date(year=2012, month=12, day=25), date(year=2013, month=12, day=25), date(year=2014, month=12, day=25), date(year=2015, month=12, day=25)]
assert dates == expected
dates = list(daterange(start_day, end_day, step=(0, 13, 0), inclusive=False))
expected = [date(year=2012, month=12, day=25), date(year=2014, month=1, day=25), date(year=2015, month=2, day=25)]
assert dates == expected
def test_daterange_infinite():
today = date.today()
infinite_dates = daterange(today, None)
for i in range(10):
assert next(infinite_dates) == today + timedelta(days=i)
def test_daterange_with_same_start_stop():
today = date.today()
date_range = daterange(today, today)
with pytest.raises(StopIteration):
next(date_range)
date_range_inclusive = daterange(today, today, inclusive=True)
assert next(date_range_inclusive) == today
with pytest.raises(StopIteration):
next(date_range_inclusive)
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