Function test_repro_4258

tests/test_wallet.py:2270–2321

Reproduces issue #4258, invalid output encoding for txprepare.

(node_factory, bitcoind)

    TEST_NETWORK == 'liquid-regtest',
    'Blinded elementsd addresses are not recognized')
def test_repro_4258(node_factory, bitcoind):
    """Reproduces issue #4258, invalid output encoding for txprepare.
    """
    l1 = node_factory.get_node()
    addr = l1.rpc.newaddr('bech32')['bech32']
    bitcoind.rpc.sendtoaddress(addr, 1)
    bitcoind.generate_block(1)

    wait_for(lambda: l1.rpc.listfunds()['outputs'] != [])
    out = l1.rpc.listfunds()['outputs'][0]

    addr = bitcoind.rpc.getnewaddress()

    # These violate the request schema!
    l1.rpc.check_request_schemas = False

    # Missing array parentheses for outputs
    with pytest.raises(RpcError, match=r"Expected an array of outputs"):
        l1.rpc.txprepare(
            outputs="{addr}:all".format(addr=addr),
            feerate="slow",
            minconf=1,
            utxos=["{txid}:{output}".format(**out)]
        )

    # Missing parentheses on the utxos array
    with pytest.raises(RpcError, match=r"Could not decode the outpoint array for utxos"):
        l1.rpc.txprepare(
            outputs=[{addr: "all"}],
            feerate="slow",
            minconf=1,
            utxos="{txid}:{output}".format(**out)
        )

    l1.rpc.check_request_schemas = True

    tx = l1.rpc.txprepare(
        outputs=[{addr: "all"}],
        feerate="slow",
        minconf=1,
        utxos=["{txid}:{output}".format(**out)]
    )

    tx = bitcoind.rpc.decoderawtransaction(tx['unsigned_tx'])

    assert(len(tx['vout']) == 1)
    o0 = tx['vout'][0]
    assert(scriptpubkey_addr(o0['scriptPubKey']) == addr)

    assert(len(tx['vin']) == 1)
    i0 = tx['vin'][0]
    assert([i0['txid'], i0['vout']] == [out['txid'], out['output']])


@unittest.skipIf(TEST_NETWORK == 'liquid-regtest', "Uses regtest addresses")