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#!/usr/bin/env python3
# Copyright (c) 2019-2021 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 bitcoind aborts if can't disconnect a block.
- Start a single node and generate 3 blocks.
- Delete the undo data.
- Mine a fork that requires disconnecting the tip.
- Verify that bitcoind AbortNode's.
"""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import get_datadir_path
import os
class AbortNodeTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 2
def setup_network(self):
self.setup_nodes()
# We'll connect the nodes later
def run_test(self):
self.generate(self.nodes[0], 3, sync_fun=self.no_op)
datadir = get_datadir_path(self.options.tmpdir, 0)
# Deleting the undo file will result in reorg failure
os.unlink(os.path.join(datadir, self.chain, 'blocks', 'rev00000.dat'))
# Connecting to a node with a more work chain will trigger a reorg
# attempt.
self.generate(self.nodes[1], 3, sync_fun=self.no_op)
with self.nodes[0].assert_debug_log(["Failed to disconnect block"]):
self.connect_nodes(0, 1)
self.generate(self.nodes[1], 1, sync_fun=self.no_op)
# Check that node0 aborted
self.log.info("Waiting for crash")
self.nodes[0].wait_until_stopped(timeout=5)
self.log.info("Node crashed - now verifying restart fails")
self.nodes[0].assert_start_raises_init_error()
if __name__ == '__main__':
AbortNodeTest().main()
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