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#!/usr/bin/env python2
# Copyright (c) 2014 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 InvalidateBlock code
#
from test_framework import BitcoinTestFramework
from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
from util import *
class InvalidateTest(BitcoinTestFramework):
def setup_chain(self):
print("Initializing test directory "+self.options.tmpdir)
initialize_chain_clean(self.options.tmpdir, 2)
def setup_network(self):
self.nodes = []
self.is_network_split = False
self.nodes.append(start_node(0, self.options.tmpdir, ["-debug"]))
self.nodes.append(start_node(1, self.options.tmpdir, ["-debug"]))
def run_test(self):
print "Mine 4 blocks on Node 0"
self.nodes[0].setgenerate(True, 4)
assert(self.nodes[0].getblockcount() == 4)
besthash = self.nodes[0].getbestblockhash()
print "Mine competing 6 blocks on Node 1"
self.nodes[1].setgenerate(True, 6)
assert(self.nodes[1].getblockcount() == 6)
print "Connect nodes to force a reorg"
connect_nodes_bi(self.nodes,0,1)
sync_blocks(self.nodes)
assert(self.nodes[0].getblockcount() == 6)
badhash = self.nodes[1].getblockhash(2)
print "Invalidate block 2 on node 0 and verify we reorg to node 0's original chain"
self.nodes[0].invalidateblock(badhash)
newheight = self.nodes[0].getblockcount()
newhash = self.nodes[0].getbestblockhash()
if (newheight != 4 or newhash != besthash):
raise AssertionError("Wrong tip for node0, hash %s, height %d"%(newhash,newheight))
if __name__ == '__main__':
InvalidateTest().main()