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from __future__ import annotations
from datetime import datetime
from datetime import timedelta
import pytest
import pendulum
from tests.conftest import assert_date
def test_subtract_years_positive():
assert pendulum.date(1975, 1, 1).subtract(years=1).year == 1974
def test_subtract_years_zero():
assert pendulum.date(1975, 1, 1).subtract(years=0).year == 1975
def test_subtract_years_negative():
assert pendulum.date(1975, 1, 1).subtract(years=-1).year == 1976
def test_subtract_months_positive():
assert pendulum.date(1975, 1, 1).subtract(months=1).month == 12
def test_subtract_months_zero():
assert pendulum.date(1975, 12, 1).subtract(months=0).month == 12
def test_subtract_months_negative():
assert pendulum.date(1975, 11, 1).subtract(months=-1).month == 12
def test_subtract_days_positive():
assert pendulum.Date(1975, 6, 1).subtract(days=1).day == 31
def test_subtract_days_zero():
assert pendulum.Date(1975, 5, 31).subtract(days=0).day == 31
def test_subtract_days_negative():
assert pendulum.Date(1975, 5, 30).subtract(days=-1).day == 31
def test_subtract_days_max():
delta = pendulum.now() - pendulum.instance(datetime.min)
assert pendulum.now().subtract(days=delta.days - 1).year == 1
def test_subtract_weeks_positive():
assert pendulum.Date(1975, 5, 28).subtract(weeks=1).day == 21
def test_subtract_weeks_zero():
assert pendulum.Date(1975, 5, 21).subtract(weeks=0).day == 21
def test_subtract_weeks_negative():
assert pendulum.Date(1975, 5, 14).subtract(weeks=-1).day == 21
def test_subtract_timedelta():
delta = timedelta(days=18)
d = pendulum.date(2015, 3, 14)
new = d - delta
assert isinstance(new, pendulum.Date)
assert_date(new, 2015, 2, 24)
def test_subtract_duration():
delta = pendulum.duration(years=2, months=3, days=18)
d = pendulum.date(2015, 3, 14)
new = d - delta
assert_date(new, 2012, 11, 26)
def test_addition_invalid_type():
d = pendulum.date(2015, 3, 14)
with pytest.raises(TypeError):
d - "ab"
with pytest.raises(TypeError):
"ab" - d
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