def test_parse_date_with_invalid_day():
with pytest.raises(ValueError, message="unconverted data remains: 3"):
parse_date("20990133")
def test_parse_date():
assert parse_date("20990101") == datetime.date(2099, 1, 1)
def test_parse_date_with_invalid_month():
with pytest.raises(ValueError, message="unconverted data remains: 01"):
parse_date("20991401")