def test_unknown_args__raises():
with pytest.raises(SystemExit):
parse_commandline_args(['-z', 'zzz'])
def test_two_args_set__both_results_are_correct():
args = parse_commandline_args(['-a', test_ip, '-p', test_port])
assert args.listen_address == test_ip
assert args.listen_port == int(test_port)
def test_address_arg_set__one_result_is_correct_other_is_default():
args = parse_commandline_args(['-a', test_ip])
assert args.listen_address == test_ip
assert args.listen_port == DEFAULT_SERVER_PORT
def test_port_arg_set__one_result_is_correct_other_is_default():
args = parse_commandline_args(['-p', test_port])
assert args.listen_address == ''
assert args.listen_port == int(test_port)
def test_none_args_set__results_are_default_values():
args = parse_commandline_args([])
assert args.listen_address == ''
assert args.listen_port == DEFAULT_SERVER_PORT