def test_parse_url_unknown_scheme():
with pytest.raises(ValueError):
parse_url("bad_scheme://rest")
def test_parse_url_valid_tcp():
(scheme, host, port) = parse_url("tcp://some.host:1234")
assert scheme == "tcp"
assert host == "some.host"
assert port == 1234
def test_parse_url_valid_serial():
(scheme, host, port) = parse_url("serial:///dev/tty:4800")
assert scheme == "serial"
assert host == "/dev/tty"
assert port == 4800