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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 wallet group functionality."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.messages import CTransaction, FromHex, ToHex
from test_framework.util import (
assert_approx,
assert_equal,
)
class WalletGroupTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 4
self.extra_args = [[], [], ['-avoidpartialspends'], ["-maxapsfee=0.0001"]]
self.rpc_timeout = 480
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
# Mine some coins
self.nodes[0].generate(110)
# 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.nodes[0].generate(1)
self.sync_all()
# 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
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], 0.2)
assert_approx(v[1], 0.3, 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], 0.2)
assert_approx(v[1], 1.3, 0.0001)
# Test 'avoid partial if warranted, even if disabled'
self.sync_all()
self.nodes[0].generate(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(), 4.3, 0.0001)
assert_approx(self.nodes[2].getbalance(), 4.3, 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], 0.1, 0.0001)
assert_approx(values[1], 1.4)
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
# Test wallet option maxapsfee with Node 3
addr_aps = self.nodes[3].getnewaddress()
self.nodes[0].sendtoaddress(addr_aps, 1.0)
self.nodes[0].sendtoaddress(addr_aps, 1.0)
self.nodes[0].generate(1)
self.sync_all()
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"]))
# Empty out node2's wallet
self.nodes[2].sendtoaddress(address=self.nodes[0].getnewaddress(), amount=self.nodes[2].getbalance(), subtractfeefromamount=True)
self.sync_all()
self.nodes[0].generate(1)
# Fill node2's wallet with 10000 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 = FromHex(CTransaction(), raw_tx)
tx.vin = []
tx.vout = [tx.vout[0]] * 2000
funded_tx = self.nodes[0].fundrawtransaction(ToHex(tx))
signed_tx = self.nodes[0].signrawtransactionwithwallet(funded_tx['hex'])
self.nodes[0].sendrawtransaction(signed_tx['hex'])
self.nodes[0].generate(1)
self.sync_all()
# 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.
assert self.nodes[2].sendtoaddress(address=addr2[0], amount=5)
if __name__ == '__main__':
WalletGroupTest().main()
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