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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.
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
)
from test_framework.blocktools import (
TIME_GENESIS_BLOCK,
)
class CreateTxWalletTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
def skip_test_if_missing_module(self):
self.skip_if_no_wallet()
def run_test(self):
self.log.info('Create some old blocks')
self.nodes[0].setmocktime(TIME_GENESIS_BLOCK)
self.generate(self.nodes[0], 200)
self.nodes[0].setmocktime(0)
self.test_anti_fee_sniping()
self.test_tx_size_too_large()
def test_anti_fee_sniping(self):
self.log.info('Check that we have some (old) blocks and that anti-fee-sniping is disabled')
assert_equal(self.nodes[0].getblockchaininfo()['blocks'], 200)
txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
tx = self.nodes[0].gettransaction(txid=txid, verbose=True)['decoded']
assert_equal(tx['locktime'], 0)
self.log.info('Check that anti-fee-sniping is enabled when we mine a recent block')
self.generate(self.nodes[0], 1)
txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
tx = self.nodes[0].gettransaction(txid=txid, verbose=True)['decoded']
assert 0 < tx['locktime'] <= 201
def test_tx_size_too_large(self):
# More than 10kB of outputs, so that we hit -maxtxfee with a high feerate
outputs = {self.nodes[0].getnewaddress(address_type='bech32'): 0.000025 for _ in range(400)}
raw_tx = self.nodes[0].createrawtransaction(inputs=[], outputs=outputs)
for fee_setting in ['-minrelaytxfee=0.01', '-mintxfee=0.01', '-paytxfee=0.01']:
self.log.info('Check maxtxfee in combination with {}'.format(fee_setting))
self.restart_node(0, extra_args=[fee_setting])
assert_raises_rpc_error(
-6,
"Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
lambda: self.nodes[0].sendmany(dummy="", amounts=outputs),
)
assert_raises_rpc_error(
-4,
"Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
)
self.log.info('Check maxtxfee in combination with settxfee')
self.restart_node(0)
self.nodes[0].settxfee(0.01)
assert_raises_rpc_error(
-6,
"Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
lambda: self.nodes[0].sendmany(dummy="", amounts=outputs),
)
assert_raises_rpc_error(
-4,
"Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
)
self.nodes[0].settxfee(0)
if __name__ == '__main__':
CreateTxWalletTest().main()
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