Function test_txsend

tests/test_wallet.py:926–967

(node_factory, bitcoind, chainparams)

def test_txsend(node_factory, bitcoind, chainparams):
    amount = 1000000
    l1 = node_factory.get_node(random_hsm=True)
    addr = chainparams['example_addr']

    # Add some funds to withdraw later: both bech32 and p2sh
    for i in range(5):
        bitcoind.rpc.sendtoaddress(l1.rpc.newaddr()['bech32'],
                                   amount / 10**8)
        bitcoind.rpc.sendtoaddress(l1.rpc.newaddr('p2sh-segwit')['p2sh-segwit'],
                                   amount / 10**8)
    bitcoind.generate_block(1)
    wait_for(lambda: len(l1.rpc.listfunds()['outputs']) == 10)

    prep = l1.rpc.txprepare([{addr: Millisatoshi(amount * 3 * 1000)}])
    out = l1.rpc.txsend(prep['txid'])

    # Cannot discard after send!
    with pytest.raises(RpcError, match=r'not an unreleased txid'):
        l1.rpc.txdiscard(prep['txid'])

    wait_for(lambda: prep['txid'] in bitcoind.rpc.getrawmempool())

    # Signed tx should have same txid
    decode = bitcoind.rpc.decoderawtransaction(out['tx'])
    assert decode['txid'] == prep['txid']

    bitcoind.generate_block(1)

    # Change output should appear.
    if decode['vout'][0]['value'] == Decimal(amount * 3) / 10**8:
        changenum = 1
    elif decode['vout'][1]['value'] == Decimal(amount * 3) / 10**8:
        changenum = 0
    else:
        assert False

    # Those spent outputs are gone, but change output has arrived.
    wait_for(lambda: len(l1.rpc.listfunds()['outputs']) == 10 - len(decode['vin']) + 1)

    # Change address should appear in listfunds()
    assert scriptpubkey_addr(decode['vout'][changenum]['scriptPubKey']) in [f['address'] for f in l1.rpc.listfunds()['outputs']]


@unittest.skipIf(TEST_NETWORK != 'regtest', "Fee outputs throw off our output matching logic")