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#!/usr/bin/env python3
# Copyright (c) 2021 The Discoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""PayTxFee QA test.
# Tests wallet behavior of -paytxfee in relation to -mintxfee
"""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
from decimal import Decimal
class PayTxFeeTest(BitcoinTestFramework):
def __init__(self):
super().__init__()
self.setup_clean_chain = True
self.num_nodes = 4
def setup_nodes(self, split=False):
nodes = []
# node 0 has txindex to track txs
nodes.append(start_node(0, self.options.tmpdir,
["-debug", '-txindex']))
# node 1 pays 0.1 DIS on all txs due to implicit mintxfee = paytxfee
nodes.append(start_node(1, self.options.tmpdir,
["-paytxfee=0.1", "-debug"]))
# node 2 will always pay 1 DIS on all txs because of explicit mintxfee
nodes.append(start_node(2, self.options.tmpdir,
["-mintxfee=1", "-paytxfee=0.1", "-debug"]))
# node 3 will always pay 0.1 DIS on all txs despite explicit mintxfee of 0.01
nodes.append(start_node(3, self.options.tmpdir,
["-mintxfee=0.01", "-paytxfee=0.1", "-debug"]))
return nodes
def run_test(self):
seed = 1000 # the amount to seed wallets with
amount = 995 # the amount to send back
targetAddress = self.nodes[0].getnewaddress()
# mine some blocks and prepare some coins
self.nodes[0].generate(102)
self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), seed)
self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), seed)
self.nodes[0].sendtoaddress(self.nodes[3].getnewaddress(), seed)
self.nodes[0].generate(1)
self.sync_all()
# create transactions
txid1 = self.nodes[1].sendtoaddress(targetAddress, amount)
txid2 = self.nodes[2].sendtoaddress(targetAddress, amount)
txid3 = self.nodes[3].sendtoaddress(targetAddress, amount)
self.sync_all()
# make sure correct fees were paid
tx1 = self.nodes[0].getrawtransaction(txid1, True)
tx2 = self.nodes[0].getrawtransaction(txid2, True)
tx3 = self.nodes[0].getrawtransaction(txid3, True)
assert_equal(tx1['vout'][0]['value'] + tx1['vout'][1]['value'], Decimal("999.9"))
assert_equal(tx2['vout'][0]['value'] + tx2['vout'][1]['value'], Decimal("999"))
assert_equal(tx3['vout'][0]['value'] + tx3['vout'][1]['value'], Decimal("999.9"))
# mine a block
self.nodes[0].generate(1);
self.sync_all()
# make sure all fees were mined
block = self.nodes[0].getblock(self.nodes[0].getbestblockhash())
coinbaseTx = self.nodes[0].getrawtransaction(block['tx'][0], True)
assert_equal(coinbaseTx['vout'][0]['value'], Decimal("500001.2"))
if __name__ == '__main__':
PayTxFeeTest().main()
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