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74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
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#!/usr/bin/env python3
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# Copyright (c) 2023 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test wallet change address selection"""
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import re
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from test_framework.blocktools import COINBASE_MATURITY
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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)
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class WalletChangeAddressTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 3
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# discardfee is used to make change outputs less likely in the change_pos test
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self.extra_args = [
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[],
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["-discardfee=1"],
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["-avoidpartialspends", "-discardfee=1"]
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]
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def assert_change_index(self, node, tx, index):
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change_index = None
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for vout in tx["vout"]:
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info = node.getaddressinfo(vout["scriptPubKey"]["addresses"][0])
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if (info["ismine"] and info["ischange"]):
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change_index = int(re.findall(r'\d+', info["hdkeypath"])[-1])
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break
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assert_equal(change_index, index)
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def assert_change_pos(self, wallet, tx, pos):
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change_pos = None
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for index, output in enumerate(tx["vout"]):
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info = wallet.getaddressinfo(output["scriptPubKey"]["address"])
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if (info["ismine"] and info["ischange"]):
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change_pos = index
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break
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assert_equal(change_pos, pos)
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def run_test(self):
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self.log.info("Setting up")
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# Mine some coins
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self.nodes[0].generate(COINBASE_MATURITY + 1)
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# Get some addresses from the two nodes
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addr1 = [self.nodes[1].getnewaddress() for _ in range(3)]
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addr2 = [self.nodes[2].getnewaddress() for _ in range(3)]
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addrs = addr1 + addr2
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# Send 1 + 0.5 coin to each address
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[self.nodes[0].sendtoaddress(addr, 10) for addr in addrs]
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[self.nodes[0].sendtoaddress(addr, 5) for addr in addrs]
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self.nodes[0].generate(1)
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for i in range(20):
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for n in [1, 2]:
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self.log.debug(f"Send transaction from node {n}: expected change index {i}")
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txid = self.nodes[n].sendtoaddress(self.nodes[0].getnewaddress(), 2)
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tx = self.nodes[n].getrawtransaction(txid, True)
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# find the change output and ensure that expected change index was used
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self.assert_change_index(self.nodes[n], tx, i)
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if __name__ == '__main__':
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WalletChangeAddressTest().main()
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