diff options
| -rwxr-xr-x | test/functional/mempool_expiry.py | 100 | ||||
| -rwxr-xr-x | test/functional/test_runner.py | 1 |
2 files changed, 101 insertions, 0 deletions
diff --git a/test/functional/mempool_expiry.py b/test/functional/mempool_expiry.py new file mode 100755 index 0000000000..8b9b7b155a --- /dev/null +++ b/test/functional/mempool_expiry.py @@ -0,0 +1,100 @@ +#!/usr/bin/env python3 +# Copyright (c) 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. +"""Tests that a mempool transaction expires after a given timeout and that its +children are removed as well. + +Both the default expiry timeout defined by DEFAULT_MEMPOOL_EXPIRY and a user +definable expiry timeout via the '-mempoolexpiry=<n>' command line argument +(<n> is the timeout in hours) are tested. +""" + +from datetime import timedelta + +from test_framework.test_framework import BitcoinTestFramework +from test_framework.util import ( + assert_equal, + assert_raises_rpc_error, + find_vout_for_address, +) + +DEFAULT_MEMPOOL_EXPIRY = 336 # hours +CUSTOM_MEMPOOL_EXPIRY = 10 # hours + + +class MempoolExpiryTest(BitcoinTestFramework): + def set_test_params(self): + self.num_nodes = 1 + + def skip_test_if_missing_module(self): + self.skip_if_no_wallet() + + def test_transaction_expiry(self, timeout): + """Tests that a transaction expires after the expiry timeout and its + children are removed as well.""" + node = self.nodes[0] + + # Send a parent transaction that will expire. + parent_address = node.getnewaddress() + parent_txid = node.sendtoaddress(parent_address, 1.0) + + # Set the mocktime to the arrival time of the parent transaction. + entry_time = node.getmempoolentry(parent_txid)['time'] + node.setmocktime(entry_time) + + # Create child transaction spending the parent transaction + vout = find_vout_for_address(node, parent_txid, parent_address) + inputs = [{'txid': parent_txid, 'vout': vout}] + outputs = {node.getnewaddress(): 0.99} + child_raw = node.createrawtransaction(inputs, outputs) + child_signed = node.signrawtransactionwithwallet(child_raw)['hex'] + + # Let half of the timeout elapse and broadcast the child transaction. + half_expiry_time = entry_time + int(60 * 60 * timeout/2) + node.setmocktime(half_expiry_time) + child_txid = node.sendrawtransaction(child_signed) + self.log.info('Broadcast child transaction after {} hours.'.format( + timedelta(seconds=(half_expiry_time-entry_time)))) + + # Let most of the timeout elapse and check that the parent tx is still + # in the mempool. + nearly_expiry_time = entry_time + 60 * 60 * timeout - 5 + node.setmocktime(nearly_expiry_time) + # Expiry of mempool transactions is only checked when a new transaction + # is added to the to the mempool. + node.sendtoaddress(node.getnewaddress(), 1.0) + self.log.info('Test parent tx not expired after {} hours.'.format( + timedelta(seconds=(nearly_expiry_time-entry_time)))) + assert_equal(entry_time, node.getmempoolentry(parent_txid)['time']) + + # Transaction should be evicted from the mempool after the expiry time + # has passed. + expiry_time = entry_time + 60 * 60 * timeout + 5 + node.setmocktime(expiry_time) + # Expiry of mempool transactions is only checked when a new transaction + # is added to the to the mempool. + node.sendtoaddress(node.getnewaddress(), 1.0) + self.log.info('Test parent tx expiry after {} hours.'.format( + timedelta(seconds=(expiry_time-entry_time)))) + assert_raises_rpc_error(-5, 'Transaction not in mempool', + node.getmempoolentry, parent_txid) + + # The child transaction should be removed from the mempool as well. + self.log.info('Test child tx is evicted as well.') + assert_raises_rpc_error(-5, 'Transaction not in mempool', + node.getmempoolentry, child_txid) + + def run_test(self): + self.log.info('Test default mempool expiry timeout of %d hours.' % + DEFAULT_MEMPOOL_EXPIRY) + self.test_transaction_expiry(DEFAULT_MEMPOOL_EXPIRY) + + self.log.info('Test custom mempool expiry timeout of %d hours.' % + CUSTOM_MEMPOOL_EXPIRY) + self.restart_node(0, ['-mempoolexpiry=%d' % CUSTOM_MEMPOOL_EXPIRY]) + self.test_transaction_expiry(CUSTOM_MEMPOOL_EXPIRY) + + +if __name__ == '__main__': + MempoolExpiryTest().main() diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py index ea8a340081..06d939afb7 100755 --- a/test/functional/test_runner.py +++ b/test/functional/test_runner.py @@ -175,6 +175,7 @@ BASE_SCRIPTS = [ 'wallet_balance.py', 'feature_nulldummy.py', 'mempool_accept.py', + 'mempool_expiry.py', 'wallet_import_rescan.py', 'wallet_import_with_label.py', 'rpc_bind.py --ipv4', |