def test_standings(self, season: Optional[int]) -> None:
standings_list = standings(season)
assert standings_list is not None
assert len(standings_list) == get_division_counts_by_season(season)
for data in standings_list:
assert data is not None
assert not data.empty
assert len(data.columns) > 0
assert len(data.index) > 0
def test_standings_future(self) -> None:
season = datetime.today().year + 1
standings_list = standings(season)
assert standings_list == []
def test_standings_pre_1871(self) -> None:
season = 1870
with pytest.raises(ValueError):
standings(season)
def test_standings_future(self) -> None:
season = most_recent_season() + 1
standings_list = standings(season)
assert standings_list == []