def test_setup_tcp_listener():
    listener = Mock()
    method = get_method('tproxy')
    method.setup_tcp_listener(listener)
    assert listener.mock_calls == [
        call.setsockopt(0, 19, 1)
    ]
def test_setup_udp_listener():
    listener = Mock()
    method = get_method('tproxy')
    method.setup_udp_listener(listener)
    assert listener.mock_calls == [
        call.setsockopt(0, 19, 1),
        call.v4.setsockopt(0, 20, 1),
        call.v6.setsockopt(41, 74, 1)
    ]