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#!/usr/bin/env python3
# Copyright (c) 2014-2016 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 mempool limiting together/eviction with the wallet
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
class MempoolLimitTest(BitcoinTestFramework):
def setup_network(self):
self.nodes = []
self.nodes.append(start_node(0, self.options.tmpdir, ["-maxmempool=5", "-spendzeroconfchange=0", "-debug"]))
self.is_network_split = False
self.sync_all()
self.relayfee = self.nodes[0].getnetworkinfo()['relayfee']
def __init__(self):
super().__init__()
self.setup_clean_chain = True
self.num_nodes = 1
self.txouts = gen_return_txouts()
def run_test(self):
txids = []
utxos = create_confirmed_utxos(self.relayfee, self.nodes[0], 91)
#create a mempool tx that will be evicted
us0 = utxos.pop()
inputs = [{ "txid" : us0["txid"], "vout" : us0["vout"]}]
outputs = {self.nodes[0].getnewaddress() : 0.0001}
tx = self.nodes[0].createrawtransaction(inputs, outputs)
self.nodes[0].settxfee(self.relayfee) # specifically fund this tx with low fee
txF = self.nodes[0].fundrawtransaction(tx)
self.nodes[0].settxfee(0) # return to automatic fee selection
txFS = self.nodes[0].signrawtransaction(txF['hex'])
txid = self.nodes[0].sendrawtransaction(txFS['hex'])
relayfee = self.nodes[0].getnetworkinfo()['relayfee']
base_fee = relayfee*100
for i in range (3):
txids.append([])
txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[30*i:30*i+30], 30, (i+1)*base_fee)
# by now, the tx should be evicted, check confirmation state
assert(txid not in self.nodes[0].getrawmempool())
txdata = self.nodes[0].gettransaction(txid)
assert(txdata['confirmations'] == 0) #confirmation should still be 0
if __name__ == '__main__':
MempoolLimitTest().main()
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