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bitcoin/test/functional/wallet_balance.py

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#!/usr/bin/env python3
# Copyright (c) 2018-2020 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 the wallet balance RPC methods."""
from decimal import Decimal
import struct
from test_framework.address import ADDRESS_BCRT1_UNSPENDABLE as ADDRESS_WATCHONLY
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
connect_nodes,
)
def create_transactions(node, address, amt, fees):
# Create and sign raw transactions from node to address for amt.
# Creates a transaction for each fee and returns an array
# of the raw transactions.
utxos = [u for u in node.listunspent(0) if u['spendable']]
# Create transactions
inputs = []
ins_total = 0
for utxo in utxos:
inputs.append({"txid": utxo["txid"], "vout": utxo["vout"]})
ins_total += utxo['amount']
if ins_total >= amt + max(fees):
break
# make sure there was enough utxos
assert ins_total >= amt + max(fees)
txs = []
for fee in fees:
outputs = {address: amt}
# prevent 0 change output
if ins_total > amt + fee:
outputs[node.getrawchangeaddress()] = ins_total - amt - fee
raw_tx = node.createrawtransaction(inputs, outputs, 0, True)
raw_tx = node.signrawtransactionwithwallet(raw_tx)
assert_equal(raw_tx['complete'], True)
txs.append(raw_tx)
return txs
class WalletTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 2
self.setup_clean_chain = True
self.extra_args = [
['-limitdescendantcount=3'], # Limit mempool descendants as a hack to have wallet txs rejected from the mempool
[],
]
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
self.nodes[0].importaddress(ADDRESS_WATCHONLY)
# Check that nodes don't own any UTXOs
assert_equal(len(self.nodes[0].listunspent()), 0)
assert_equal(len(self.nodes[1].listunspent()), 0)
self.log.info("Check that only node 0 is watching an address")
assert 'watchonly' in self.nodes[0].getbalances()
assert 'watchonly' not in self.nodes[1].getbalances()
self.log.info("Mining blocks ...")
self.nodes[0].generate(1)
self.sync_all()
self.nodes[1].generate(1)
self.nodes[1].generatetoaddress(101, ADDRESS_WATCHONLY)
self.sync_all()
assert_equal(self.nodes[0].getbalances()['mine']['trusted'], 50)
assert_equal(self.nodes[0].getwalletinfo()['balance'], 50)
assert_equal(self.nodes[1].getbalances()['mine']['trusted'], 50)
assert_equal(self.nodes[0].getbalances()['watchonly']['immature'], 5000)
assert 'watchonly' not in self.nodes[1].getbalances()
assert_equal(self.nodes[0].getbalance(), 50)
assert_equal(self.nodes[1].getbalance(), 50)
self.log.info("Test getbalance with different arguments")
assert_equal(self.nodes[0].getbalance("*"), 50)
assert_equal(self.nodes[0].getbalance("*", 1), 50)
assert_equal(self.nodes[0].getbalance("*", 1, True), 100)
assert_equal(self.nodes[0].getbalance(minconf=1), 50)
assert_equal(self.nodes[0].getbalance(minconf=0, include_watchonly=True), 100)
assert_equal(self.nodes[1].getbalance(minconf=0, include_watchonly=True), 50)
# Send 40 BTC from 0 to 1 and 60 BTC from 1 to 0.
txs = create_transactions(self.nodes[0], self.nodes[1].getnewaddress(), 40, [Decimal('0.01')])
self.nodes[0].sendrawtransaction(txs[0]['hex'])
self.nodes[1].sendrawtransaction(txs[0]['hex']) # sending on both nodes is faster than waiting for propagation
self.sync_all()
txs = create_transactions(self.nodes[1], self.nodes[0].getnewaddress(), 60, [Decimal('0.01'), Decimal('0.02')])
self.nodes[1].sendrawtransaction(txs[0]['hex'])
self.nodes[0].sendrawtransaction(txs[0]['hex']) # sending on both nodes is faster than waiting for propagation
self.sync_all()
# First argument of getbalance must be set to "*"
assert_raises_rpc_error(-32, "dummy first argument must be excluded or set to \"*\"", self.nodes[1].getbalance, "")
self.log.info("Test balances with unconfirmed inputs")
# Before `test_balance()`, we have had two nodes with a balance of 50
# each and then we:
#
# 1) Sent 40 from node A to node B with fee 0.01
# 2) Sent 60 from node B to node A with fee 0.01
#
# Then we check the balances:
#
# 1) As is
# 2) With transaction 2 from above with 2x the fee
#
# Prior to #16766, in this situation, the node would immediately report
# a balance of 30 on node B as unconfirmed and trusted.
#
# After #16766, we show that balance as unconfirmed.
#
# The balance is indeed "trusted" and "confirmed" insofar as removing
# the mempool transactions would return at least that much money. But
# the algorithm after #16766 marks it as unconfirmed because the 'taint'
# tracking of transaction trust for summing balances doesn't consider
# which inputs belong to a user. In this case, the change output in
# question could be "destroyed" by replace the 1st transaction above.
#
# The post #16766 behavior is correct; we shouldn't be treating those
# funds as confirmed. If you want to rely on that specific UTXO existing
# which has given you that balance, you cannot, as a third party
# spending the other input would destroy that unconfirmed.
#
# For example, if the test transactions were:
#
# 1) Sent 40 from node A to node B with fee 0.01
# 2) Sent 10 from node B to node A with fee 0.01
#
# Then our node would report a confirmed balance of 40 + 50 - 10 = 80
# BTC, which is more than would be available if transaction 1 were
# replaced.
def test_balances(*, fee_node_1=0):
# getbalances
expected_balances_0 = {'mine': {'immature': Decimal('0E-8'),
'trusted': Decimal('9.99'), # change from node 0's send
'untrusted_pending': Decimal('60.0')},
'watchonly': {'immature': Decimal('5000'),
'trusted': Decimal('50.0'),
'untrusted_pending': Decimal('0E-8')}}
expected_balances_1 = {'mine': {'immature': Decimal('0E-8'),
'trusted': Decimal('0E-8'), # node 1's send had an unsafe input
'untrusted_pending': Decimal('30.0') - fee_node_1}} # Doesn't include output of node 0's send since it was spent
assert_equal(self.nodes[0].getbalances(), expected_balances_0)
assert_equal(self.nodes[1].getbalances(), expected_balances_1)
# getbalance without any arguments includes unconfirmed transactions, but not untrusted transactions
assert_equal(self.nodes[0].getbalance(), Decimal('9.99')) # change from node 0's send
assert_equal(self.nodes[1].getbalance(), Decimal('0')) # node 1's send had an unsafe input
# Same with minconf=0
assert_equal(self.nodes[0].getbalance(minconf=0), Decimal('9.99'))
assert_equal(self.nodes[1].getbalance(minconf=0), Decimal('0'))
# getbalance with a minconf incorrectly excludes coins that have been spent more recently than the minconf blocks ago
# TODO: fix getbalance tracking of coin spentness depth
assert_equal(self.nodes[0].getbalance(minconf=1), Decimal('0'))
assert_equal(self.nodes[1].getbalance(minconf=1), Decimal('0'))
# getunconfirmedbalance
assert_equal(self.nodes[0].getunconfirmedbalance(), Decimal('60')) # output of node 1's spend
assert_equal(self.nodes[1].getunconfirmedbalance(), Decimal('30') - fee_node_1) # Doesn't include output of node 0's send since it was spent
# getwalletinfo.unconfirmed_balance
assert_equal(self.nodes[0].getwalletinfo()["unconfirmed_balance"], Decimal('60'))
assert_equal(self.nodes[1].getwalletinfo()["unconfirmed_balance"], Decimal('30') - fee_node_1)
test_balances(fee_node_1=Decimal('0.01'))
# Node 1 bumps the transaction fee and resends
self.nodes[1].sendrawtransaction(txs[1]['hex'])
self.nodes[0].sendrawtransaction(txs[1]['hex']) # sending on both nodes is faster than waiting for propagation
self.sync_all()
self.log.info("Test getbalance and getbalances.mine.untrusted_pending with conflicted unconfirmed inputs")
test_balances(fee_node_1=Decimal('0.02'))
self.nodes[1].generatetoaddress(1, ADDRESS_WATCHONLY)
self.sync_all()
# balances are correct after the transactions are confirmed
balance_node0 = Decimal('69.99') # node 1's send plus change from node 0's send
balance_node1 = Decimal('29.98') # change from node 0's send
assert_equal(self.nodes[0].getbalances()['mine']['trusted'], balance_node0)
assert_equal(self.nodes[1].getbalances()['mine']['trusted'], balance_node1)
assert_equal(self.nodes[0].getbalance(), balance_node0)
assert_equal(self.nodes[1].getbalance(), balance_node1)
# Send total balance away from node 1
txs = create_transactions(self.nodes[1], self.nodes[0].getnewaddress(), Decimal('29.97'), [Decimal('0.01')])
self.nodes[1].sendrawtransaction(txs[0]['hex'])
self.nodes[1].generatetoaddress(2, ADDRESS_WATCHONLY)
self.sync_all()
# getbalance with a minconf incorrectly excludes coins that have been spent more recently than the minconf blocks ago
# TODO: fix getbalance tracking of coin spentness depth
# getbalance with minconf=3 should still show the old balance
assert_equal(self.nodes[1].getbalance(minconf=3), Decimal('0'))
# getbalance with minconf=2 will show the new balance.
assert_equal(self.nodes[1].getbalance(minconf=2), Decimal('0'))
# check mempool transactions count for wallet unconfirmed balance after
# dynamically loading the wallet.
before = self.nodes[1].getbalances()['mine']['untrusted_pending']
dst = self.nodes[1].getnewaddress()
self.nodes[1].unloadwallet('')
self.nodes[0].sendtoaddress(dst, 0.1)
self.sync_all()
self.nodes[1].loadwallet('')
after = self.nodes[1].getbalances()['mine']['untrusted_pending']
assert_equal(before + Decimal('0.1'), after)
# Create 3 more wallet txs, where the last is not accepted to the
# mempool because it is the third descendant of the tx above
for _ in range(3):
# Set amount high enough such that all coins are spent by each tx
txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 99)
self.log.info('Check that wallet txs not in the mempool are untrusted')
assert txid not in self.nodes[0].getrawmempool()
assert_equal(self.nodes[0].gettransaction(txid)['trusted'], False)
assert_equal(self.nodes[0].getbalance(minconf=0), 0)
self.log.info("Test replacement and reorg of non-mempool tx")
tx_orig = self.nodes[0].gettransaction(txid)['hex']
# Increase fee by 1 coin
tx_replace = tx_orig.replace(
struct.pack("<q", 99 * 10**8).hex(),
struct.pack("<q", 98 * 10**8).hex(),
)
tx_replace = self.nodes[0].signrawtransactionwithwallet(tx_replace)['hex']
# Total balance is given by the sum of outputs of the tx
total_amount = sum([o['value'] for o in self.nodes[0].decoderawtransaction(tx_replace)['vout']])
self.sync_all()
self.nodes[1].sendrawtransaction(hexstring=tx_replace, maxfeerate=0)
# Now confirm tx_replace
block_reorg = self.nodes[1].generatetoaddress(1, ADDRESS_WATCHONLY)[0]
self.sync_all()
assert_equal(self.nodes[0].getbalance(minconf=0), total_amount)
self.log.info('Put txs back into mempool of node 1 (not node 0)')
self.nodes[0].invalidateblock(block_reorg)
self.nodes[1].invalidateblock(block_reorg)
self.sync_blocks()
self.nodes[0].syncwithvalidationinterfacequeue()
assert_equal(self.nodes[0].getbalance(minconf=0), 0) # wallet txs not in the mempool are untrusted
self.nodes[0].generatetoaddress(1, ADDRESS_WATCHONLY)
assert_equal(self.nodes[0].getbalance(minconf=0), 0) # wallet txs not in the mempool are untrusted
# Now confirm tx_orig
self.restart_node(1, ['-persistmempool=0'])
connect_nodes(self.nodes[0], 1)
self.sync_blocks()
self.nodes[1].sendrawtransaction(tx_orig)
self.nodes[1].generatetoaddress(1, ADDRESS_WATCHONLY)
self.sync_all()
assert_equal(self.nodes[0].getbalance(minconf=0), total_amount + 1) # The reorg recovered our fee of 1 coin
if __name__ == '__main__':
WalletTest().main()
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