git / moonbite-core / test/functional/rpc_getchaintips.py · raw

#!/usr/bin/env python3# Copyright (c) 2014-2019 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 BitcoinTestFrameworkfrom test_framework.util import assert_equalclass 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.nodes[0].generatetoaddress(10, self.nodes[0].get_deterministic_priv_key().address)        self.nodes[2].generatetoaddress(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')        tips[1]['branchlen'] = 0        tips[1]['status'] = 'active'        assert_equal (tips[1], shortTip)if __name__ == '__main__':    GetChainTipsTest ().main ()