Function test_precise_diff

tests/test_helpers.py:37–86

()

def test_precise_diff() -> None:
    dt1 = datetime(2003, 3, 1, 0, 0, 0)
    dt2 = datetime(2003, 1, 31, 23, 59, 59)

    diff = precise_diff(dt1, dt2)
    assert_diff(diff, months=-1, seconds=-1)

    diff = precise_diff(dt2, dt1)
    assert_diff(diff, months=1, seconds=1)

    dt1 = datetime(2012, 3, 1, 0, 0, 0)
    dt2 = datetime(2012, 1, 31, 23, 59, 59)

    diff = precise_diff(dt1, dt2)
    assert_diff(diff, months=-1, seconds=-1)
    assert diff.total_days == -30

    diff = precise_diff(dt2, dt1)
    assert_diff(diff, months=1, seconds=1)

    dt1 = datetime(2001, 1, 1)
    dt2 = datetime(2003, 9, 17, 20, 54, 47, 282310)

    diff = precise_diff(dt1, dt2)
    assert_diff(
        diff,
        years=2,
        months=8,
        days=16,
        hours=20,
        minutes=54,
        seconds=47,
        microseconds=282310,
    )

    dt1 = datetime(2017, 2, 17, 16, 5, 45, 123456)
    dt2 = datetime(2018, 2, 17, 16, 5, 45, 123256)

    diff = precise_diff(dt1, dt2)
    assert_diff(
        diff, months=11, days=30, hours=23, minutes=59, seconds=59, microseconds=999800
    )

    # DST
    tz = timezone("America/Toronto")
    dt1 = tz.datetime(2017, 3, 7)
    dt2 = tz.datetime(2017, 3, 13)

    diff = precise_diff(dt1, dt2)
    assert_diff(diff, days=6, hours=0)


def test_precise_diff_timezone() -> None: