Skip to content
Permalink
Browse files

[Tests] Add mempool_limit.py test

- [Tests] Add mempool_limit.py test
- [Tests] Refactor some shared functions

Github-Pull: #7153
Rebased-From: 110ff11 7632cf6
  • Loading branch information
jonasschnelli authored and laanwj committed Nov 30, 2015
1 parent 301f16a commit 9ef7c54ef0b2d9c1abe45f66ecaa917e1cd41cc9
@@ -85,6 +85,7 @@
'rest.py',
'mempool_spendcoinbase.py',
'mempool_reorg.py',
'mempool_limit.py',
'httpbasics.py',
'multi_rpc.py',
'zapwallettxes.py',
@@ -0,0 +1,67 @@
#!/usr/bin/env python2
# Copyright (c) 2014-2015 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 __init__(self):
# Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
# So we have big transactions (and therefore can't fit very many into each block)
# create one script_pubkey
script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
for i in xrange (512):
script_pubkey = script_pubkey + "01"
# concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
self.txouts = "81"
for k in xrange(128):
# add txout value
self.txouts = self.txouts + "0000000000000000"
# add length of script_pubkey
self.txouts = self.txouts + "fd0402"
# add script_pubkey
self.txouts = self.txouts + script_pubkey

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 setup_chain(self):
print("Initializing test directory "+self.options.tmpdir)
initialize_chain_clean(self.options.tmpdir, 2)

def run_test(self):
txids = []
utxos = create_confirmed_utxos(self.relayfee, self.nodes[0], 90)

#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)
txF = self.nodes[0].fundrawtransaction(tx)
txFS = self.nodes[0].signrawtransaction(txF['hex'])
txid = self.nodes[0].sendrawtransaction(txFS['hex'])
self.nodes[0].lockunspent(True, [us0])

relayfee = self.nodes[0].getnetworkinfo()['relayfee']
base_fee = relayfee*100
for i in xrange (4):
txids.append([])
txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[30*i:30*i+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()
@@ -42,62 +42,15 @@ def setup_network(self):
self.nodes.append(start_node(0, self.options.tmpdir, ["-debug", "-printpriority=1"]))
self.relayfee = self.nodes[0].getnetworkinfo()['relayfee']

def create_confirmed_utxos(self, count):
self.nodes[0].generate(int(0.5*count)+101)
utxos = self.nodes[0].listunspent()
iterations = count - len(utxos)
addr1 = self.nodes[0].getnewaddress()
addr2 = self.nodes[0].getnewaddress()
if iterations <= 0:
return utxos
for i in xrange(iterations):
t = utxos.pop()
fee = self.relayfee
inputs = []
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]})
outputs = {}
send_value = t['amount'] - fee
outputs[addr1] = satoshi_round(send_value/2)
outputs[addr2] = satoshi_round(send_value/2)
raw_tx = self.nodes[0].createrawtransaction(inputs, outputs)
signed_tx = self.nodes[0].signrawtransaction(raw_tx)["hex"]
txid = self.nodes[0].sendrawtransaction(signed_tx)

while (self.nodes[0].getmempoolinfo()['size'] > 0):
self.nodes[0].generate(1)

utxos = self.nodes[0].listunspent()
assert(len(utxos) >= count)
return utxos

def create_lots_of_big_transactions(self, utxos, fee):
addr = self.nodes[0].getnewaddress()
txids = []
for i in xrange(len(utxos)):
t = utxos.pop()
inputs = []
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]})
outputs = {}
send_value = t['amount'] - fee
outputs[addr] = satoshi_round(send_value)
rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
newtx = rawtx[0:92]
newtx = newtx + self.txouts
newtx = newtx + rawtx[94:]
signresult = self.nodes[0].signrawtransaction(newtx, None, None, "NONE")
txid = self.nodes[0].sendrawtransaction(signresult["hex"], True)
txids.append(txid)
return txids

def run_test(self):
utxos = self.create_confirmed_utxos(90)
utxos = create_confirmed_utxos(self.relayfee, self.nodes[0], 90)
base_fee = self.relayfee*100 # our transactions are smaller than 100kb
txids = []

# Create 3 batches of transactions at 3 different fee rate levels
for i in xrange(3):
txids.append([])
txids[i] = self.create_lots_of_big_transactions(utxos[30*i:30*i+30], (i+1)*base_fee)
txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[30*i:30*i+30], (i+1)*base_fee)

# add a fee delta to something in the cheapest bucket and make sure it gets mined
# also check that a different entry in the cheapest bucket is NOT mined (lower
@@ -408,3 +408,49 @@ def assert_raises(exc, fun, *args, **kwds):

def satoshi_round(amount):
return Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)

def create_confirmed_utxos(fee, node, count):
node.generate(int(0.5*count)+101)
utxos = node.listunspent()
iterations = count - len(utxos)
addr1 = node.getnewaddress()
addr2 = node.getnewaddress()
if iterations <= 0:
return utxos
for i in xrange(iterations):
t = utxos.pop()
inputs = []
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]})
outputs = {}
send_value = t['amount'] - fee
outputs[addr1] = satoshi_round(send_value/2)
outputs[addr2] = satoshi_round(send_value/2)
raw_tx = node.createrawtransaction(inputs, outputs)
signed_tx = node.signrawtransaction(raw_tx)["hex"]
txid = node.sendrawtransaction(signed_tx)

while (node.getmempoolinfo()['size'] > 0):
node.generate(1)

utxos = node.listunspent()
assert(len(utxos) >= count)
return utxos

def create_lots_of_big_transactions(node, txouts, utxos, fee):
addr = node.getnewaddress()
txids = []
for i in xrange(len(utxos)):
t = utxos.pop()
inputs = []
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]})
outputs = {}
send_value = t['amount'] - fee
outputs[addr] = satoshi_round(send_value)
rawtx = node.createrawtransaction(inputs, outputs)
newtx = rawtx[0:92]
newtx = newtx + txouts
newtx = newtx + rawtx[94:]
signresult = node.signrawtransaction(newtx, None, None, "NONE")
txid = node.sendrawtransaction(signresult["hex"], True)
txids.append(txid)
return txids

0 comments on commit 9ef7c54

Please sign in to comment.
You can’t perform that action at this time.