Function test_funding_by_utxos

tests/test_connection.py:1192–1228

Fund a channel with specific utxos

(node_factory, bitcoind)

@pytest.mark.openchannel('v2')
@pytest.mark.developer
def test_funding_by_utxos(node_factory, bitcoind):
    """Fund a channel with specific utxos"""
    l1, l2, l3 = node_factory.line_graph(3, fundchannel=False)

    # Get 3 differents utxo
    l1.fundwallet(0.01 * 10**8)
    l1.fundwallet(0.01 * 10**8)
    l1.fundwallet(0.01 * 10**8)
    wait_for(lambda: len(l1.rpc.listfunds()["outputs"]) == 3)

    utxos = [utxo["txid"] + ":" + str(utxo["output"]) for utxo in l1.rpc.listfunds()["outputs"]]

    # Fund with utxos we don't own
    with pytest.raises(RpcError, match=r"Unknown UTXO "):
        l3.rpc.fundchannel(l2.info["id"], int(0.01 * 10**8), utxos=utxos)

    # Fund with an empty array
    with pytest.raises(RpcError, match=r"Please specify an array of \\'txid:output_index\\', not \"*\""):
        l1.rpc.fundchannel(l2.info["id"], int(0.01 * 10**8), utxos=[])

    # Fund a channel from some of the utxos, without change
    l1.rpc.fundchannel(l2.info["id"], "all", utxos=utxos[0:2])

    # Fund a channel from the rest of utxos, with change
    l1.rpc.connect(l3.info["id"], "localhost", l3.port)
    l1.rpc.fundchannel(l3.info["id"], int(0.007 * 10**8), utxos=[utxos[2]])

    # Fund another channel with already reserved utxos
    with pytest.raises(RpcError, match=r"UTXO.*already reserved"):
        l1.rpc.fundchannel(l3.info["id"], int(0.01 * 10**8), utxos=utxos)

    bitcoind.generate_block(1, wait_for_mempool=1)
    sync_blockheight(bitcoind, [l1])

    # Fund another channel with already spent utxos
    with pytest.raises(RpcError, match=r"Already spent UTXO "):
        l1.rpc.fundchannel(l3.info["id"], int(0.01 * 10**8), utxos=utxos)


@pytest.mark.developer("needs dev_forget_channel")