def METHOD_NAME():
    instance = HostBase()
    test_data = {field: None for field in WS_FIELDS}
    eth_src = '0e:00:00:00:00:01'
    eth_src_int = int(netaddr.EUI(eth_src))
    test_data.update({
        'ip.version': 4,
        'eth.src': eth_src_int,
        'eth.dst': eth_src_int,
        '_srcip': '192.168.0.1',
        '_dstip': '192.168.0.2',
    })
    mac_df = recast_df(pd.DataFrame([test_data]))
    assert instance._calc_cols(eth_src_int, mac_df)