Function test_getroutes_auto_localchans

tests/test_askrene.py:1138–1184

Test getroutes call with auto.localchans layer

(node_factory)

def test_getroutes_auto_localchans(node_factory):
    """Test getroutes call with auto.localchans layer"""
    l1 = node_factory.get_node()
    gsfile, nodemap = generate_gossip_store([GenChannel(0, 1, forward=GenChannel.Half(propfee=10000)),
                                             GenChannel(1, 2, forward=GenChannel.Half(propfee=10000))],
                                            nodemap={0: l1.info['id']})

    # We get bad signature warnings, since our gossip is made up!
    l2 = node_factory.get_node(allow_warning=True, gossip_store_file=gsfile.name)

    # Now l2 believes l1 has an entire network behind it.
    scid12, _ = l2.fundchannel(l1, 10**6, announce_channel=False)

    # Cannot find a route unless we use local hints.
    with pytest.raises(RpcError, match="Unknown source node {}".format(l2.info['id'])):
        l2.rpc.getroutes(source=l2.info['id'],
                         destination=nodemap[2],
                         amount_msat=100000,
                         layers=[],
                         maxfee_msat=100000,
                         final_cltv=99)

    # This should work
    scid21dir = f"{scid12}/{direction(l2.info['id'], l1.info['id'])}"
    # Calculate directions dynamically based on node IDs
    dir01 = direction(nodemap[0], nodemap[1])
    dir12 = direction(nodemap[1], nodemap[2])
    check_getroute_paths(l2,
                         l2.info['id'],
                         nodemap[2],
                         100000,
                         maxfee_msat=100000,
                         layers=['auto.localchans'],
                         paths=[[{'short_channel_id_dir': scid21dir, 'amount_in_msat': 102012, 'cltv_in': 99 + 6 + 6 + 6},
                                 {'short_channel_id_dir': f'0x1x0/{dir01}', 'amount_in_msat': 102010, 'cltv_in': 99 + 6 + 6},
                                 {'short_channel_id_dir': f'2x2x1/{dir12}', 'amount_in_msat': 101000, 'cltv_in': 99 + 6}]])

    # This should get self-discount correct
    check_getroute_paths(l2,
                         l2.info['id'],
                         nodemap[2],
                         100000,
                         maxfee_msat=100000,
                         layers=['auto.localchans', 'auto.sourcefree'],
                         paths=[[{'short_channel_id_dir': scid21dir, 'amount_in_msat': 102010, 'cltv_in': 99 + 6 + 6},
                                 {'short_channel_id_dir': f'0x1x0/{dir01}', 'amount_in_msat': 102010, 'cltv_in': 99 + 6 + 6},
                                 {'short_channel_id_dir': f'2x2x1/{dir12}', 'amount_in_msat': 101000, 'cltv_in': 99 + 6}]])


def test_fees_dont_exceed_constraints(node_factory):