def test_handle_to_from_string():
handle = NodeHandle("baz", NodeHandle("bar", NodeHandle("foo", None)))
assert handle.to_string() == "foo.bar.baz"
assert NodeHandle.from_string(handle.to_string()) == handle
handle = NodeHandle("foo", None)
assert handle.to_string() == "foo"
assert NodeHandle.from_string(handle.to_string()) == handle
def __new__(cls, solid_handle: NodeHandle, key: Optional[str] = None):
return super(StepHandle, cls).__new__(
cls,
solid_handle=check.inst_param(solid_handle, "solid_handle",
NodeHandle),
# mypy can't tell that if default is set, this is guaranteed to be a str
key=cast(
str,
check.opt_str_param(key,
"key",
default=solid_handle.to_string())),
)