dash/test/functional/rpc_getchaintips.py
2024-10-04 19:01:00 +00:00

67 lines
2.5 KiB
Python
Executable File

#!/usr/bin/env python3
# Copyright (c) 2014-2016 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 getchaintips RPC.
- introduce a network split
- work on chains of different lengths
- join the network together again
- verify that getchaintips now returns two chain tips.
"""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
class GetChainTipsTest (BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 4
def run_test(self):
tips = self.nodes[0].getchaintips()
assert_equal(len(tips), 1)
assert_equal(tips[0]['branchlen'], 0)
assert_equal(tips[0]['height'], 200)
assert_equal(tips[0]['status'], 'active')
# Split the network and build two chains of different lengths.
self.split_network()
self.generatetoaddress(self.nodes[0], 10, self.nodes[0].get_deterministic_priv_key().address)
self.generatetoaddress(self.nodes[2], 20, self.nodes[2].get_deterministic_priv_key().address)
self.sync_all(self.nodes[:2])
self.sync_all(self.nodes[2:])
tips = self.nodes[1].getchaintips ()
assert_equal (len (tips), 1)
shortTip = tips[0]
assert_equal (shortTip['branchlen'], 0)
assert_equal (shortTip['height'], 210)
assert_equal (tips[0]['status'], 'active')
tips = self.nodes[3].getchaintips ()
assert_equal (len (tips), 1)
longTip = tips[0]
assert_equal (longTip['branchlen'], 0)
assert_equal (longTip['height'], 220)
assert_equal (tips[0]['status'], 'active')
# Join the network halves and check that we now have two tips
# (at least at the nodes that previously had the short chain).
self.join_network ()
tips = self.nodes[0].getchaintips ()
assert_equal (len (tips), 2)
assert_equal (tips[0], longTip)
assert_equal (tips[1]['branchlen'], 10)
assert_equal (tips[1]['status'], 'valid-fork')
# We already checked that the long tip is the active one,
# update data to verify that the short tip matches the expected one.
tips[1]['branchlen'] = 0
tips[1]['status'] = 'active'
tips[1]['forkpoint'] = tips[1]['hash']
assert_equal (tips[1], shortTip)
if __name__ == '__main__':
GetChainTipsTest ().main ()