def test_pop_legend_kwarg_error(keys) -> None:
kws = dict(zip(keys, range(len(keys))))
with pytest.raises(ValueError):
bpl.pop_legend_kwarg(kws)
def test_pop_legend_kwarg(key) -> None:
kws = {'foo': 10, key: 'bar'}
assert bpl.pop_legend_kwarg(kws) == {key: "bar"}