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#!/usr/bin/env python3
# Copyright (c) 2023 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 fastprune mode."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal
)
from test_framework.blocktools import (
create_block,
create_coinbase,
add_witness_commitment
)
from test_framework.wallet import MiniWallet
class FeatureFastpruneTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.extra_args = [["-fastprune"]]
def run_test(self):
self.log.info("ensure that large blocks don't crash or freeze in -fastprune")
wallet = MiniWallet(self.nodes[0])
tx = wallet.create_self_transfer()['tx']
annex = [0x50]
for _ in range(0x10000):
annex.append(0xff)
tx.wit.vtxinwit[0].scriptWitness.stack.append(bytes(annex))
tip = int(self.nodes[0].getbestblockhash(), 16)
time = self.nodes[0].getblock(self.nodes[0].getbestblockhash())['time'] + 1
height = self.nodes[0].getblockcount() + 1
block = create_block(hashprev=tip, ntime=time, txlist=[tx], coinbase=create_coinbase(height=height))
add_witness_commitment(block)
block.solve()
self.nodes[0].submitblock(block.serialize().hex())
assert_equal(int(self.nodes[0].getbestblockhash(), 16), block.sha256)
if __name__ == '__main__':
FeatureFastpruneTest().main()
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