def test_is_none_interpolation(cfg: Any, key: str, is_none: bool) -> None:
cfg = OmegaConf.create(cfg)
with warns(UserWarning):
assert OmegaConf.is_none(cfg, key) == is_none
check = _is_none(cfg._get_node(key),
resolve=True,
throw_on_resolution_failure=False)
assert check == is_none
def test_is_none(self, type_: Callable[..., Any], input_: Any,
expected: bool) -> None:
value = type_(input_) if input_ != "DEFAULT" else type_()
assert _utils._is_none(value) == expected