Function test_funding_external_wallet_corners

tests/test_connection.py:1233–1345

(node_factory, bitcoind)

@pytest.mark.developer("needs dev_forget_channel")
@pytest.mark.openchannel('v1')
def test_funding_external_wallet_corners(node_factory, bitcoind):
    l1, l2 = node_factory.get_nodes(2, opts={'may_reconnect': True,
                                             'dev-no-reconnect': None})

    amount = 2**24
    l1.fundwallet(amount + 10000000)

    amount = amount - 1

    # make sure we can generate PSBTs.
    addr = l1.rpc.newaddr()['bech32']
    bitcoind.rpc.sendtoaddress(addr, (amount + 1000000) / 10**8)
    bitcoind.generate_block(1)
    wait_for(lambda: len(l1.rpc.listfunds()["outputs"]) != 0)

    # Some random (valid) psbt
    psbt = l1.rpc.fundpsbt(amount, '253perkw', 250, reserve=0)['psbt']

    with pytest.raises(RpcError, match=r'Unknown peer'):
        l1.rpc.fundchannel_start(l2.info['id'], amount)

    with pytest.raises(RpcError, match=r'Unknown peer'):
        l1.rpc.fundchannel_complete(l2.info['id'], psbt)

    # Should not be able to continue without being in progress.
    l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
    with pytest.raises(RpcError, match=r'No channel funding in progress.'):
        l1.rpc.fundchannel_complete(l2.info['id'], psbt)

    # Fail to open (too large)
    with pytest.raises(RpcError, match=r'Amount exceeded 16777215'):
        l1.rpc.fundchannel_start(l2.info['id'], amount + 1)

    start = l1.rpc.fundchannel_start(l2.info['id'], amount)
    with pytest.raises(RpcError, match=r'Already funding channel'):
        l1.rpc.fundchannel(l2.info['id'], amount)

    # Can't complete with incorrect amount (unchecked on Elements)
    if TEST_NETWORK == 'regtest':
        wrongamt = l1.rpc.txprepare([{start['funding_address']: amount - 1}])
        with pytest.raises(RpcError, match=r'Output to open channel is .*, should be .*'):
            l1.rpc.fundchannel_complete(l2.info['id'], wrongamt['psbt'])
        l1.rpc.txdiscard(wrongamt['txid'])

    # Can't complete with incorrect address.
    wrongaddr = l1.rpc.txprepare([{l1.rpc.newaddr()['bech32']: amount}])
    with pytest.raises(RpcError, match=r'No output to open channel'):
        l1.rpc.fundchannel_complete(l2.info['id'], wrongaddr['psbt'])
    l1.rpc.txdiscard(wrongaddr['txid'])

    l1.rpc.fundchannel_cancel(l2.info['id'])

    # Cancelling causes disconnection.
    wait_for(lambda: l1.rpc.listpeers(l2.info['id'])['peers'] == [])
    l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
    amount2 = 1000000
    funding_addr = l1.rpc.fundchannel_start(l2.info['id'], amount2)['funding_address']