How to use the sshuttle.options.parse_subnetport function in sshuttle

def test_parse_subnetport_ip4_with_port():
    for ip_repr, ip in _ip4_reprs.items():
        assert sshuttle.options.parse_subnetport(':'.join((ip_repr, '80'))) \
            == (socket.AF_INET, ip, 32, 80, 80)
        assert sshuttle.options.parse_subnetport(':'.join((ip_repr, '80-90')))\
            == (socket.AF_INET, ip, 32, 80, 90)

def test_parse_subnetport_ip4_with_mask():
    for ip_repr, ip in _ip4_reprs.items():
        for swidth in _ip4_swidths:
            assert sshuttle.options.parse_subnetport(
                    '/'.join((ip_repr, str(swidth)))
                    ) == (socket.AF_INET, ip, swidth, 0, 0)
    assert sshuttle.options.parse_subnetport('0/0') \
        == (socket.AF_INET, '0.0.0.0', 0, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('10.0.0.0/33')
    assert str(excinfo.value) == 'width 33 is not between 0 and 32'

def test_parse_subnetport_ip4():
    for ip_repr, ip in _ip4_reprs.items():
        assert sshuttle.options.parse_subnetport(ip_repr) \
                == (socket.AF_INET, ip, 32, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('10.256.0.0')
    assert str(excinfo.value) == 'Unable to resolve address: 10.256.0.0'

def test_parse_subnetport_ip6_with_mask():
    for ip_repr, ip in _ip6_reprs.items():
        for swidth in _ip4_swidths + _ip6_swidths:
            assert sshuttle.options.parse_subnetport(
                    '/'.join((ip_repr, str(swidth)))
                    ) == (socket.AF_INET6, ip, swidth, 0, 0)
    assert sshuttle.options.parse_subnetport('::/0') \
        == (socket.AF_INET6, '::', 0, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('fc00::/129')
    assert str(excinfo.value) == 'width 129 is not between 0 and 128'

def test_parse_subnetport_ip4_with_mask():
    for ip_repr, ip in _ip4_reprs.items():
        for swidth in _ip4_swidths:
            assert sshuttle.options.parse_subnetport(
                    '/'.join((ip_repr, str(swidth)))
                    ) == (socket.AF_INET, ip, swidth, 0, 0)
    assert sshuttle.options.parse_subnetport('0/0') \
        == (socket.AF_INET, '0.0.0.0', 0, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('10.0.0.0/33')
    assert str(excinfo.value) == 'width 33 is not between 0 and 32'

def test_parse_subnetport_ip6_with_mask():
    for ip_repr, ip in _ip6_reprs.items():
        for swidth in _ip4_swidths + _ip6_swidths:
            assert sshuttle.options.parse_subnetport(
                    '/'.join((ip_repr, str(swidth)))
                    ) == (socket.AF_INET6, ip, swidth, 0, 0)
    assert sshuttle.options.parse_subnetport('::/0') \
        == (socket.AF_INET6, '::', 0, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('fc00::/129')
    assert str(excinfo.value) == 'width 129 is not between 0 and 128'

def test_parse_subnetport_ip6_with_mask():
    for ip_repr, ip in _ip6_reprs.items():
        for swidth in _ip4_swidths + _ip6_swidths:
            assert sshuttle.options.parse_subnetport(
                    '/'.join((ip_repr, str(swidth)))
                    ) == (socket.AF_INET6, ip, swidth, 0, 0)
    assert sshuttle.options.parse_subnetport('::/0') \
        == (socket.AF_INET6, '::', 0, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('fc00::/129')
    assert str(excinfo.value) == 'width 129 is not between 0 and 128'

def test_parse_subnetport_ip6_with_mask_and_port():
    for ip_repr, ip in _ip6_reprs.items():
        assert sshuttle.options.parse_subnetport('[' + ip_repr + '/128]:80') \
            == (socket.AF_INET6, ip, 128, 80, 80)
        assert sshuttle.options.parse_subnetport('[' + ip_repr + '/16]:80-90')\
            == (socket.AF_INET6, ip, 16, 80, 90)

def test_parse_subnetport_ip4():
    for ip_repr, ip in _ip4_reprs.items():
        assert sshuttle.options.parse_subnetport(ip_repr) \
                == (socket.AF_INET, ip, 32, 0, 0)
    with pytest.raises(Fatal) as excinfo:
        sshuttle.options.parse_subnetport('10.256.0.0')
    assert str(excinfo.value) == 'Unable to resolve address: 10.256.0.0'