import datetime

import pytest
import pytz

from symuid._datetime import datetime_utc_now, unix_epoch_time_to_datetime_utc


def test_datetime_utc_now():
    pytz_dt = datetime.datetime.now(pytz.timezone("UTC"))
    assert abs((datetime_utc_now() - pytz_dt).total_seconds()) < 5


@pytest.mark.parametrize(
    ("ts_sec", "expected_dt"),
    [
        (
            1528795204,
            datetime.datetime(2018, 6, 12, 9, 20, 4, tzinfo=datetime.timezone.utc),
        ),
    ],
)
def test_unix_epoch_time_to_datetime_utc(ts_sec, expected_dt):
    assert expected_dt == unix_epoch_time_to_datetime_utc(ts_sec)