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#!/usr/bin/env python3
# Copyright (c) 2018-2022 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test wallet group functionality."""
from test_framework.blocktools import COINBASE_MATURITY
from test_framework.test_framework import BitcoinTestFramework
from test_framework.messages import (
tx_from_hex,
)
from test_framework.util import (
assert_approx,
assert_equal,
)
class WalletGroupTest(BitcoinTestFramework):
def add_options(self, parser):
self.add_wallet_options(parser)
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 5
# whitelist peers to speed up tx relay / mempool sync
self.noban_tx_relay = True
self.extra_args = [
[],
[],
["-avoidpartialspends"],
["-maxapsfee=0.00002719"],
["-maxapsfee=0.00002720"],
]
for args in self.extra_args:
args.append(f"-paytxfee={20 * 1e3 / 1e8}") # apply feerate of 20 sats/vB across all nodes
self.rpc_timeout = 480
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
self.log.info("Setting up")
# To take full use of immediate tx relay, all nodes need to be reachable
# via inbound peers, i.e. connect first to last to close the circle
# (the default test network topology looks like this:
# node0 <-- node1 <-- node2 <-- node3 <-- node4 <-- node5)
self.connect_nodes(0, self.num_nodes - 1)
# Mine some coins
self.generate(self.nodes[0], COINBASE_MATURITY + 1)
# Get some addresses from the two nodes
addr1 = [self.nodes[1].getnewaddress() for _ in range(3)]
addr2 = [self.nodes[2].getnewaddress() for _ in range(3)]
addrs = addr1 + addr2
# Send 1 + 0.5 coin to each address
[self.nodes[0].sendtoaddress(addr, 1.0) for addr in addrs]
[self.nodes[0].sendtoaddress(addr, 0.5) for addr in addrs]
self.generate(self.nodes[0], 1)
# For each node, send 0.2 coins back to 0;
# - node[1] should pick one 0.5 UTXO and leave the rest
# - node[2] should pick one (1.0 + 0.5) UTXO group corresponding to a
# given address, and leave the rest
self.log.info("Test sending transactions picks one UTXO group and leaves the rest")
txid1 = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 0.2)
tx1 = self.nodes[1].getrawtransaction(txid1, True)
# txid1 should have 1 input and 2 outputs
assert_equal(1, len(tx1["vin"]))
assert_equal(2, len(tx1["vout"]))
# one output should be 0.2, the other should be ~0.3
v = [vout["value"] for vout in tx1["vout"]]
v.sort()
assert_approx(v[0], vexp=0.2, vspan=0.0001)
assert_approx(v[1], vexp=0.3, vspan=0.0001)
txid2 = self.nodes[2].sendtoaddress(self.nodes[0].getnewaddress(), 0.2)
tx2 = self.nodes[2].getrawtransaction(txid2, True)
# txid2 should have 2 inputs and 2 outputs
assert_equal(2, len(tx2["vin"]))
assert_equal(2, len(tx2["vout"]))
# one output should be 0.2, the other should be ~1.3
v = [vout["value"] for vout in tx2["vout"]]
v.sort()
assert_approx(v[0], vexp=0.2, vspan=0.0001)
assert_approx(v[1], vexp=1.3, vspan=0.0001)
self.log.info("Test avoiding partial spends if warranted, even if avoidpartialspends is disabled")
self.sync_all()
self.generate(self.nodes[0], 1)
# Nodes 1-2 now have confirmed UTXOs (letters denote destinations):
# Node #1: Node #2:
# - A 1.0 - D0 1.0
# - B0 1.0 - D1 0.5
# - B1 0.5 - E0 1.0
# - C0 1.0 - E1 0.5
# - C1 0.5 - F ~1.3
# - D ~0.3
assert_approx(self.nodes[1].getbalance(), vexp=4.3, vspan=0.0001)
assert_approx(self.nodes[2].getbalance(), vexp=4.3, vspan=0.0001)
# Sending 1.4 btc should pick one 1.0 + one more. For node #1,
# this could be (A / B0 / C0) + (B1 / C1 / D). We ensure that it is
# B0 + B1 or C0 + C1, because this avoids partial spends while not being
# detrimental to transaction cost
txid3 = self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), 1.4)
tx3 = self.nodes[1].getrawtransaction(txid3, True)
# tx3 should have 2 inputs and 2 outputs
assert_equal(2, len(tx3["vin"]))
assert_equal(2, len(tx3["vout"]))
# the accumulated value should be 1.5, so the outputs should be
# ~0.1 and 1.4 and should come from the same destination
values = [vout["value"] for vout in tx3["vout"]]
values.sort()
assert_approx(values[0], vexp=0.1, vspan=0.0001)
assert_approx(values[1], vexp=1.4, vspan=0.0001)
input_txids = [vin["txid"] for vin in tx3["vin"]]
input_addrs = [self.nodes[1].gettransaction(txid)['details'][0]['address'] for txid in input_txids]
assert_equal(input_addrs[0], input_addrs[1])
# Node 2 enforces avoidpartialspends so needs no checking here
tx4_ungrouped_fee = 2820
tx4_grouped_fee = 4160
tx5_6_ungrouped_fee = 5520
tx5_6_grouped_fee = 8240
self.log.info("Test wallet option maxapsfee")
addr_aps = self.nodes[3].getnewaddress()
self.nodes[0].sendtoaddress(addr_aps, 1.0)
self.nodes[0].sendtoaddress(addr_aps, 1.0)
self.generate(self.nodes[0], 1)
with self.nodes[3].assert_debug_log([f'Fee non-grouped = {tx4_ungrouped_fee}, grouped = {tx4_grouped_fee}, using grouped']):
txid4 = self.nodes[3].sendtoaddress(self.nodes[0].getnewaddress(), 0.1)
tx4 = self.nodes[3].getrawtransaction(txid4, True)
# tx4 should have 2 inputs and 2 outputs although one output would
# have been enough and the transaction caused higher fees
assert_equal(2, len(tx4["vin"]))
assert_equal(2, len(tx4["vout"]))
addr_aps2 = self.nodes[3].getnewaddress()
[self.nodes[0].sendtoaddress(addr_aps2, 1.0) for _ in range(5)]
self.generate(self.nodes[0], 1)
with self.nodes[3].assert_debug_log([f'Fee non-grouped = {tx5_6_ungrouped_fee}, grouped = {tx5_6_grouped_fee}, using non-grouped']):
txid5 = self.nodes[3].sendtoaddress(self.nodes[0].getnewaddress(), 2.95)
tx5 = self.nodes[3].getrawtransaction(txid5, True)
# tx5 should have 3 inputs (1.0, 1.0, 1.0) and 2 outputs
assert_equal(3, len(tx5["vin"]))
assert_equal(2, len(tx5["vout"]))
# Test wallet option maxapsfee with node 4, which sets maxapsfee
# 1 sat higher, crossing the threshold from non-grouped to grouped.
self.log.info("Test wallet option maxapsfee threshold from non-grouped to grouped")
addr_aps3 = self.nodes[4].getnewaddress()
[self.nodes[0].sendtoaddress(addr_aps3, 1.0) for _ in range(5)]
self.generate(self.nodes[0], 1)
with self.nodes[4].assert_debug_log([f'Fee non-grouped = {tx5_6_ungrouped_fee}, grouped = {tx5_6_grouped_fee}, using grouped']):
txid6 = self.nodes[4].sendtoaddress(self.nodes[0].getnewaddress(), 2.95)
tx6 = self.nodes[4].getrawtransaction(txid6, True)
# tx6 should have 5 inputs and 2 outputs
assert_equal(5, len(tx6["vin"]))
assert_equal(2, len(tx6["vout"]))
# Empty out node2's wallet
self.nodes[2].sendall(recipients=[self.nodes[0].getnewaddress()])
self.sync_all()
self.generate(self.nodes[0], 1)
self.log.info("Fill a wallet with 10,000 outputs corresponding to the same scriptPubKey")
for _ in range(5):
raw_tx = self.nodes[0].createrawtransaction([{"txid":"0"*64, "vout":0}], [{addr2[0]: 0.05}])
tx = tx_from_hex(raw_tx)
tx.vin = []
tx.vout = [tx.vout[0]] * 2000
funded_tx = self.nodes[0].fundrawtransaction(tx.serialize().hex())
signed_tx = self.nodes[0].signrawtransactionwithwallet(funded_tx['hex'])
self.nodes[0].sendrawtransaction(signed_tx['hex'])
self.generate(self.nodes[0], 1)
# Check that we can create a transaction that only requires ~100 of our
# utxos, without pulling in all outputs and creating a transaction that
# is way too big.
self.log.info("Test creating txn that only requires ~100 of our UTXOs without pulling in all outputs")
assert self.nodes[2].sendtoaddress(address=addr2[0], amount=5)
if __name__ == '__main__':
WalletGroupTest().main()
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