"""Tests for functions from pandas._libs.tslibs"""

from datetime import date, datetime

import pytest

from pandas._libs import tslibs
from pandas._libs.tslibs.timestamps import Timestamp


@pytest.mark.parametrize(
    "value,expected",
    [
        (date(2012, 9, 7), datetime(2012, 9, 7)),
        (datetime(2012, 9, 7, 12), datetime(2012, 9, 7)),
        (datetime(2007, 10, 1, 1, 12, 5, 10), datetime(2007, 10, 1)),
    ],
)
def test_normalize_date(value, expected):
    result = tslibs.normalize_date(value)
    assert result == expected


class SubDatetime(datetime):
    pass


@pytest.mark.parametrize(
    "dt, expected",
    [
        (Timestamp(2000, 1, 1, 1), Timestamp(2000, 1, 1, 0)),
        (datetime(2000, 1, 1, 1), datetime(2000, 1, 1, 0)),
        (SubDatetime(2000, 1, 1, 1), SubDatetime(2000, 1, 1, 0)),
    ],
)
def test_normalize_date_sub_types(dt, expected):
    # GH 25851
    # ensure that subclassed datetime works with
    # normalize_date
    result = tslibs.normalize_date(dt)
    assert result == expected