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rpc_invalidateblock.py
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#!/usr/bin/env python3
# Copyright (c) 2014-2022 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 the invalidateblock RPC."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.address import ADDRESS_BCRT1_UNSPENDABLE_DESCRIPTOR
from test_framework.blocktools import (
create_block,
create_coinbase,
)
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
)
class InvalidateTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 3
def setup_network(self):
self.setup_nodes()
def run_test(self):
self.log.info("Make sure we repopulate setBlockIndexCandidates after InvalidateBlock:")
self.log.info("Mine 4 blocks on Node 0")
self.generate(self.nodes[0], 4, sync_fun=self.no_op)
assert_equal(self.nodes[0].getblockcount(), 4)
besthash_n0 = self.nodes[0].getbestblockhash()
self.log.info("Mine competing 6 blocks on Node 1")
self.generate(self.nodes[1], 6, sync_fun=self.no_op)
assert_equal(self.nodes[1].getblockcount(), 6)
self.log.info("Connect nodes to force a reorg")
self.connect_nodes(0, 1)
self.sync_blocks(self.nodes[0:2])
assert_equal(self.nodes[0].getblockcount(), 6)
# Add a header to the tip of node 0 without submitting the block. This shouldn't
# affect results since this chain will be invalidated next.
tip = self.nodes[0].getbestblockhash()
block_time = self.nodes[0].getblock(self.nodes[0].getbestblockhash())['time'] + 1
block = create_block(int(tip, 16), create_coinbase(self.nodes[0].getblockcount()), block_time, version=4)
block.solve()
self.nodes[0].submitheader(block.serialize().hex())
assert_equal(self.nodes[0].getblockchaininfo()["headers"], self.nodes[0].getblockchaininfo()["blocks"] + 1)
self.log.info("Invalidate block 2 on node 0 and verify we reorg to node 0's original chain")
badhash = self.nodes[1].getblockhash(2)
self.nodes[0].invalidateblock(badhash)
assert_equal(self.nodes[0].getblockcount(), 4)
assert_equal(self.nodes[0].getbestblockhash(), besthash_n0)
# Should report consistent blockchain info
assert_equal(self.nodes[0].getblockchaininfo()["headers"], self.nodes[0].getblockchaininfo()["blocks"])
self.log.info("Reconsider block 6 on node 0 again and verify that the best header is set correctly")
self.nodes[0].reconsiderblock(tip)
assert_equal(self.nodes[0].getblockchaininfo()["headers"], self.nodes[0].getblockchaininfo()["blocks"] + 1)
self.log.info("Invalidate block 2 on node 0 and verify we reorg to node 0's original chain again")
self.nodes[0].invalidateblock(badhash)
assert_equal(self.nodes[0].getblockcount(), 4)
assert_equal(self.nodes[0].getbestblockhash(), besthash_n0)
assert_equal(self.nodes[0].getblockchaininfo()["headers"], self.nodes[0].getblockchaininfo()["blocks"])
self.log.info("Make sure we won't reorg to a lower work chain:")
self.connect_nodes(1, 2)
self.log.info("Sync node 2 to node 1 so both have 6 blocks")
self.sync_blocks(self.nodes[1:3])
assert_equal(self.nodes[2].getblockcount(), 6)
self.log.info("Invalidate block 5 on node 1 so its tip is now at 4")
self.nodes[1].invalidateblock(self.nodes[1].getblockhash(5))
assert_equal(self.nodes[1].getblockcount(), 4)
self.log.info("Invalidate block 3 on node 2, so its tip is now 2")
self.nodes[2].invalidateblock(self.nodes[2].getblockhash(3))
assert_equal(self.nodes[2].getblockcount(), 2)
self.log.info("..and then mine a block")
self.generate(self.nodes[2], 1, sync_fun=self.no_op)
self.log.info("Verify all nodes are at the right height")
self.wait_until(lambda: self.nodes[2].getblockcount() == 3, timeout=5)
self.wait_until(lambda: self.nodes[0].getblockcount() == 4, timeout=5)
self.wait_until(lambda: self.nodes[1].getblockcount() == 4, timeout=5)
self.log.info("Verify that we reconsider all ancestors as well")
blocks = self.generatetodescriptor(self.nodes[1], 10, ADDRESS_BCRT1_UNSPENDABLE_DESCRIPTOR, sync_fun=self.no_op)
assert_equal(self.nodes[1].getbestblockhash(), blocks[-1])
# Invalidate the two blocks at the tip
self.nodes[1].invalidateblock(blocks[-1])
self.nodes[1].invalidateblock(blocks[-2])
assert_equal(self.nodes[1].getbestblockhash(), blocks[-3])
# Reconsider only the previous tip
self.nodes[1].reconsiderblock(blocks[-1])
# Should be back at the tip by now
assert_equal(self.nodes[1].getbestblockhash(), blocks[-1])
self.log.info("Verify that we reconsider all descendants")
blocks = self.generatetodescriptor(self.nodes[1], 10, ADDRESS_BCRT1_UNSPENDABLE_DESCRIPTOR, sync_fun=self.no_op)
assert_equal(self.nodes[1].getbestblockhash(), blocks[-1])
# Invalidate the two blocks at the tip
self.nodes[1].invalidateblock(blocks[-2])
self.nodes[1].invalidateblock(blocks[-4])
assert_equal(self.nodes[1].getbestblockhash(), blocks[-5])
# Reconsider only the previous tip
self.nodes[1].reconsiderblock(blocks[-4])
# Should be back at the tip by now
assert_equal(self.nodes[1].getbestblockhash(), blocks[-1])
# Should report consistent blockchain info
assert_equal(self.nodes[1].getblockchaininfo()["headers"], self.nodes[1].getblockchaininfo()["blocks"])
self.log.info("Verify that invalidating an unknown block throws an error")
assert_raises_rpc_error(-5, "Block not found", self.nodes[1].invalidateblock, "00" * 32)
assert_equal(self.nodes[1].getbestblockhash(), blocks[-1])
if __name__ == '__main__':
InvalidateTest(__file__).main()