mirror of
https://github.com/bitcoin/bitcoin.git
synced 2024-11-20 10:38:42 +01:00
dac7a111bd
substitutes "for x in range(N):" by "for _ in range(N):" indicates to the reader that a block is just repeated N times, and that the loop counter is not used in the body
93 lines
4.9 KiB
Python
Executable File
93 lines
4.9 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# Copyright (c) 2014-2019 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 descendant package tracking carve-out allowing one final transaction in
|
|
an otherwise-full package as long as it has only one parent and is <= 10k in
|
|
size.
|
|
"""
|
|
|
|
from decimal import Decimal
|
|
|
|
from test_framework.test_framework import BitcoinTestFramework
|
|
from test_framework.util import assert_equal, assert_raises_rpc_error, satoshi_round
|
|
|
|
MAX_ANCESTORS = 25
|
|
MAX_DESCENDANTS = 25
|
|
|
|
class MempoolPackagesTest(BitcoinTestFramework):
|
|
def set_test_params(self):
|
|
self.num_nodes = 1
|
|
self.extra_args = [["-maxorphantx=1000"]]
|
|
|
|
def skip_test_if_missing_module(self):
|
|
self.skip_if_no_wallet()
|
|
|
|
# Build a transaction that spends parent_txid:vout
|
|
# Return amount sent
|
|
def chain_transaction(self, node, parent_txids, vouts, value, fee, num_outputs):
|
|
send_value = satoshi_round((value - fee)/num_outputs)
|
|
inputs = []
|
|
for (txid, vout) in zip(parent_txids, vouts):
|
|
inputs.append({'txid' : txid, 'vout' : vout})
|
|
outputs = {}
|
|
for _ in range(num_outputs):
|
|
outputs[node.getnewaddress()] = send_value
|
|
rawtx = node.createrawtransaction(inputs, outputs, 0, True)
|
|
signedtx = node.signrawtransactionwithwallet(rawtx)
|
|
txid = node.sendrawtransaction(signedtx['hex'])
|
|
fulltx = node.getrawtransaction(txid, 1)
|
|
assert len(fulltx['vout']) == num_outputs # make sure we didn't generate a change output
|
|
return (txid, send_value)
|
|
|
|
def run_test(self):
|
|
# Mine some blocks and have them mature.
|
|
self.nodes[0].generate(101)
|
|
utxo = self.nodes[0].listunspent(10)
|
|
txid = utxo[0]['txid']
|
|
vout = utxo[0]['vout']
|
|
value = utxo[0]['amount']
|
|
|
|
fee = Decimal("0.0002")
|
|
# MAX_ANCESTORS transactions off a confirmed tx should be fine
|
|
chain = []
|
|
for _ in range(4):
|
|
(txid, sent_value) = self.chain_transaction(self.nodes[0], [txid], [vout], value, fee, 2)
|
|
vout = 0
|
|
value = sent_value
|
|
chain.append([txid, value])
|
|
for _ in range(MAX_ANCESTORS - 4):
|
|
(txid, sent_value) = self.chain_transaction(self.nodes[0], [txid], [0], value, fee, 1)
|
|
value = sent_value
|
|
chain.append([txid, value])
|
|
(second_chain, second_chain_value) = self.chain_transaction(self.nodes[0], [utxo[1]['txid']], [utxo[1]['vout']], utxo[1]['amount'], fee, 1)
|
|
|
|
# Check mempool has MAX_ANCESTORS + 1 transactions in it
|
|
assert_equal(len(self.nodes[0].getrawmempool(True)), MAX_ANCESTORS + 1)
|
|
|
|
# Adding one more transaction on to the chain should fail.
|
|
assert_raises_rpc_error(-26, "too-long-mempool-chain, too many unconfirmed ancestors [limit: 25]", self.chain_transaction, self.nodes[0], [txid], [0], value, fee, 1)
|
|
# ...even if it chains on from some point in the middle of the chain.
|
|
assert_raises_rpc_error(-26, "too-long-mempool-chain, too many descendants", self.chain_transaction, self.nodes[0], [chain[2][0]], [1], chain[2][1], fee, 1)
|
|
assert_raises_rpc_error(-26, "too-long-mempool-chain, too many descendants", self.chain_transaction, self.nodes[0], [chain[1][0]], [1], chain[1][1], fee, 1)
|
|
# ...even if it chains on to two parent transactions with one in the chain.
|
|
assert_raises_rpc_error(-26, "too-long-mempool-chain, too many descendants", self.chain_transaction, self.nodes[0], [chain[0][0], second_chain], [1, 0], chain[0][1] + second_chain_value, fee, 1)
|
|
# ...especially if its > 40k weight
|
|
assert_raises_rpc_error(-26, "too-long-mempool-chain, too many descendants", self.chain_transaction, self.nodes[0], [chain[0][0]], [1], chain[0][1], fee, 350)
|
|
# But not if it chains directly off the first transaction
|
|
(replacable_txid, replacable_orig_value) = self.chain_transaction(self.nodes[0], [chain[0][0]], [1], chain[0][1], fee, 1)
|
|
# and the second chain should work just fine
|
|
self.chain_transaction(self.nodes[0], [second_chain], [0], second_chain_value, fee, 1)
|
|
|
|
# Make sure we can RBF the chain which used our carve-out rule
|
|
second_tx_outputs = {self.nodes[0].getrawtransaction(replacable_txid, True)["vout"][0]['scriptPubKey']['addresses'][0]: replacable_orig_value - (Decimal(1) / Decimal(100))}
|
|
second_tx = self.nodes[0].createrawtransaction([{'txid': chain[0][0], 'vout': 1}], second_tx_outputs)
|
|
signed_second_tx = self.nodes[0].signrawtransactionwithwallet(second_tx)
|
|
self.nodes[0].sendrawtransaction(signed_second_tx['hex'])
|
|
|
|
# Finally, check that we added two transactions
|
|
assert_equal(len(self.nodes[0].getrawmempool(True)), MAX_ANCESTORS + 3)
|
|
|
|
if __name__ == '__main__':
|
|
MempoolPackagesTest().main()
|