def test_from_config_both_set():
args = SimpleNamespace(mac_address="a")
from_config(args, {"mac_address": "b"}, Parser(), "mac_address")
assert args.mac_address == "a"
def test_from_config_cli_unset_config_set():
args = SimpleNamespace(mac_address=None)
from_config(args, {"mac_address": "b"}, Parser(), "mac_address")
assert args.mac_address == "b"
def test_from_config_empty():
from_config(SimpleNamespace(), {}, Parser(), "")
def test_from_config_cli_set_config_unset():
args = SimpleNamespace(mac_address="a")
from_config(args, {}, Parser(), "mac_address")
assert args.mac_address == "a"
def test_from_config_none_set():
parser = Parser()
from_config(SimpleNamespace(mac_address=None), {}, parser, "mac_address")
assert parser.error_called is True