dash/test/functional/test_framework/test_framework.py

#!/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.
"""Base class for RPC testing."""

from collections import deque
import logging
import optparse
import os
import sys
import shutil
import tempfile
import time
from concurrent.futures import ThreadPoolExecutor

from .util import (
    assert_equal,
    initialize_chain,
    start_node,
    start_nodes,
    connect_nodes_bi,
    connect_nodes,
    disconnect_nodes,
    sync_blocks,
    sync_mempools,
    sync_masternodes,
    stop_nodes,
    stop_node,
    enable_coverage,
    check_json_precision,
    initialize_chain_clean,
    PortSeed,
    set_cache_mocktime,
    set_genesis_mocktime,
    get_mocktime,
    set_mocktime,
    set_node_times,
    p2p_port,
    satoshi_round,
    wait_to_sync,
    copy_datadir)
from .authproxy import JSONRPCException

class BitcoinTestFramework(object):

    TEST_EXIT_PASSED = 0
    TEST_EXIT_FAILED = 1
    TEST_EXIT_SKIPPED = 77

    def __init__(self):
        self.num_nodes = 4
        self.setup_clean_chain = False
        self.nodes = None

    def run_test(self):
        raise NotImplementedError

    def add_options(self, parser):
        pass

    def setup_chain(self):
        self.log.info("Initializing test directory "+self.options.tmpdir)
        if self.setup_clean_chain:
            initialize_chain_clean(self.options.tmpdir, self.num_nodes)
            set_genesis_mocktime()
        else:
            initialize_chain(self.options.tmpdir, self.num_nodes, self.options.cachedir)
            set_cache_mocktime()

    def stop_node(self, num_node):
        stop_node(self.nodes[num_node], num_node)

    def setup_nodes(self):
        extra_args = None
        if hasattr(self, "extra_args"):
            extra_args = self.extra_args
        self.nodes = start_nodes(self.num_nodes, self.options.tmpdir, extra_args)

    def setup_network(self):
        self.setup_nodes()

        # Connect the nodes as a "chain".  This allows us
        # to split the network between nodes 1 and 2 to get
        # two halves that can work on competing chains.
        for i in range(self.num_nodes - 1):
            connect_nodes_bi(self.nodes, i, i + 1)
        self.sync_all()

    def split_network(self):
        """
        Split the network of four nodes into nodes 0/1 and 2/3.
        """
        disconnect_nodes(self.nodes[1], 2)
        disconnect_nodes(self.nodes[2], 1)
        self.sync_all([self.nodes[:2], self.nodes[2:]])

    def sync_all(self, node_groups=None):
        if not node_groups:
            node_groups = [self.nodes]

        [sync_blocks(group) for group in node_groups]
        [sync_mempools(group) for group in node_groups]

    def join_network(self):
        """
        Join the (previously split) network halves together.
        """
        connect_nodes_bi(self.nodes, 1, 2)
        self.sync_all()

    def main(self):

        parser = optparse.OptionParser(usage="%prog [options]")
        parser.add_option("--nocleanup", dest="nocleanup", default=False, action="store_true",
                          help="Leave dashds and test.* datadir on exit or error")
        parser.add_option("--noshutdown", dest="noshutdown", default=False, action="store_true",
                          help="Don't stop dashds after the test execution")
        parser.add_option("--srcdir", dest="srcdir", default=os.path.normpath(os.path.dirname(os.path.realpath(__file__))+"/../../../src"),
                          help="Source directory containing dashd/dash-cli (default: %default)")
        parser.add_option("--cachedir", dest="cachedir", default=os.path.normpath(os.path.dirname(os.path.realpath(__file__))+"/../../cache"),
                          help="Directory for caching pregenerated datadirs")
        parser.add_option("--tmpdir", dest="tmpdir", default=tempfile.mkdtemp(prefix="test"),
                          help="Root directory for datadirs")
        parser.add_option("-l", "--loglevel", dest="loglevel", default="INFO",
                          help="log events at this level and higher to the console. Can be set to DEBUG, INFO, WARNING, ERROR or CRITICAL. Passing --loglevel DEBUG will output all logs to console. Note that logs at all levels are always written to the test_framework.log file in the temporary test directory.")
        parser.add_option("--tracerpc", dest="trace_rpc", default=False, action="store_true",
                          help="Print out all RPC calls as they are made")
        parser.add_option("--portseed", dest="port_seed", default=os.getpid(), type='int',
                          help="The seed to use for assigning port numbers (default: current process id)")
        parser.add_option("--coveragedir", dest="coveragedir",
                          help="Write tested RPC commands into this directory")
        parser.add_option("--configfile", dest="configfile",
                          help="Location of the test framework config file")
        self.add_options(parser)
        (self.options, self.args) = parser.parse_args()

        # backup dir variable for removal at cleanup
        self.options.root, self.options.tmpdir = self.options.tmpdir, self.options.tmpdir + '/' + str(self.options.port_seed)

        if self.options.coveragedir:
            enable_coverage(self.options.coveragedir)

        PortSeed.n = self.options.port_seed

        os.environ['PATH'] = self.options.srcdir+":"+self.options.srcdir+"/qt:"+os.environ['PATH']

        check_json_precision()

        # Set up temp directory and start logging
        os.makedirs(self.options.tmpdir, exist_ok=False)
        self._start_logging()

        success = False

        try:
            self.setup_chain()
            self.setup_network()
            self.run_test()
            success = True
        except JSONRPCException as e:
            self.log.exception("JSONRPC error")
        except AssertionError as e:
            self.log.exception("Assertion failed")
        except KeyError as e:
            self.log.exception("Key error")
        except Exception as e:
            self.log.exception("Unexpected exception caught during testing")
        except KeyboardInterrupt as e:
            self.log.warning("Exiting after keyboard interrupt")

        if not self.options.noshutdown:
            self.log.info("Stopping nodes")
            try:
                stop_nodes(self.nodes)
            except BaseException as e:
                success = False
                self.log.exception("Unexpected exception caught during shutdown")
        else:
            self.log.info("Note: dashds were not stopped and may still be running")

        if not self.options.nocleanup and not self.options.noshutdown and success:
            self.log.info("Cleaning up")
            shutil.rmtree(self.options.tmpdir)
            if not os.listdir(self.options.root):
                os.rmdir(self.options.root)
        else:
            self.log.warning("Not cleaning up dir %s" % self.options.tmpdir)
            if os.getenv("PYTHON_DEBUG", ""):
                # Dump the end of the debug logs, to aid in debugging rare
                # travis failures.
                import glob
                filenames = [self.options.tmpdir + "/test_framework.log"]
                filenames += glob.glob(self.options.tmpdir + "/node*/regtest/debug.log")
                MAX_LINES_TO_PRINT = 1000
                for fn in filenames:
                    try:
                        with open(fn, 'r') as f:
                            print("From" , fn, ":")
                            print("".join(deque(f, MAX_LINES_TO_PRINT)))
                    except OSError:
                        print("Opening file %s failed." % fn)
                        traceback.print_exc()
        if success:
            self.log.info("Tests successful")
            sys.exit(self.TEST_EXIT_PASSED)
        else:
            self.log.error("Test failed. Test logging available at %s/test_framework.log", self.options.tmpdir)
            logging.shutdown()
            sys.exit(self.TEST_EXIT_FAILED)

    def _start_logging(self):
        # Add logger and logging handlers
        self.log = logging.getLogger('TestFramework')
        self.log.setLevel(logging.DEBUG)
        # Create file handler to log all messages
        fh = logging.FileHandler(self.options.tmpdir + '/test_framework.log')
        fh.setLevel(logging.DEBUG)
        # Create console handler to log messages to stderr. By default this logs only error messages, but can be configured with --loglevel.
        ch = logging.StreamHandler(sys.stdout)
        # User can provide log level as a number or string (eg DEBUG). loglevel was caught as a string, so try to convert it to an int
        ll = int(self.options.loglevel) if self.options.loglevel.isdigit() else self.options.loglevel.upper()
        ch.setLevel(ll)
        # Format logs the same as bitcoind's debug.log with microprecision (so log files can be concatenated and sorted)
        formatter = logging.Formatter(fmt = '%(asctime)s.%(msecs)03d000 %(name)s (%(levelname)s): %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
        formatter.converter = time.gmtime
        fh.setFormatter(formatter)
        ch.setFormatter(formatter)
        # add the handlers to the logger
        self.log.addHandler(fh)
        self.log.addHandler(ch)

        if self.options.trace_rpc:
            rpc_logger = logging.getLogger("BitcoinRPC")
            rpc_logger.setLevel(logging.DEBUG)
            rpc_handler = logging.StreamHandler(sys.stdout)
            rpc_handler.setLevel(logging.DEBUG)
            rpc_logger.addHandler(rpc_handler)


MASTERNODE_COLLATERAL = 1000


class MasternodeInfo:
    def __init__(self, proTxHash, ownerAddr, votingAddr, pubKeyOperator, keyOperator, collateral_address, collateral_txid, collateral_vout):
        self.proTxHash = proTxHash
        self.ownerAddr = ownerAddr
        self.votingAddr = votingAddr
        self.pubKeyOperator = pubKeyOperator
        self.keyOperator = keyOperator
        self.collateral_address = collateral_address
        self.collateral_txid = collateral_txid
        self.collateral_vout = collateral_vout


class DashTestFramework(BitcoinTestFramework):
    def __init__(self, num_nodes, masterodes_count, extra_args, fast_dip3_enforcement=False):
        super().__init__()
        self.mn_count = masterodes_count
        self.num_nodes = num_nodes
        self.mninfo = []
        self.setup_clean_chain = True
        self.is_network_split = False
        # additional args
        self.extra_args = extra_args

        self.extra_args += ["-sporkkey=cP4EKFyJsHT39LDqgdcB43Y3YXjNyjb5Fuas1GQSeAtjnZWmZEQK"]

        self.fast_dip3_enforcement = fast_dip3_enforcement
        if fast_dip3_enforcement:
            self.extra_args += ["-dip3params=30:50"]

    def create_simple_node(self):
        idx = len(self.nodes)
        args = self.extra_args
        self.nodes.append(start_node(idx, self.options.tmpdir, args))
        for i in range(0, idx):
            connect_nodes(self.nodes[i], idx)

    def prepare_masternodes(self):
        for idx in range(0, self.mn_count):
            self.prepare_masternode(idx)

    def prepare_masternode(self, idx):
        bls = self.nodes[0].bls('generate')
        address = self.nodes[0].getnewaddress()
        txid = self.nodes[0].sendtoaddress(address, MASTERNODE_COLLATERAL)

        txraw = self.nodes[0].getrawtransaction(txid, True)
        collateral_vout = 0
        for vout_idx in range(0, len(txraw["vout"])):
            vout = txraw["vout"][vout_idx]
            if vout["value"] == MASTERNODE_COLLATERAL:
                collateral_vout = vout_idx
        self.nodes[0].lockunspent(False, [{'txid': txid, 'vout': collateral_vout}])

        # send to same address to reserve some funds for fees
        self.nodes[0].sendtoaddress(address, 0.001)

        ownerAddr = self.nodes[0].getnewaddress()
        votingAddr = self.nodes[0].getnewaddress()
        rewardsAddr = self.nodes[0].getnewaddress()

        port = p2p_port(len(self.nodes) + idx)
        if (idx % 2) == 0:
            self.nodes[0].lockunspent(True, [{'txid': txid, 'vout': collateral_vout}])
            proTxHash = self.nodes[0].protx('register_fund', address, '127.0.0.1:%d' % port, ownerAddr, bls['public'], votingAddr, 0, rewardsAddr, address)
        else:
            self.nodes[0].generate(1)
            proTxHash = self.nodes[0].protx('register', txid, collateral_vout, '127.0.0.1:%d' % port, ownerAddr, bls['public'], votingAddr, 0, rewardsAddr, address)
        self.nodes[0].generate(1)

        self.mninfo.append(MasternodeInfo(proTxHash, ownerAddr, votingAddr, bls['public'], bls['secret'], address, txid, collateral_vout))
        self.sync_all()

    def remove_mastermode(self, idx):
        mn = self.mninfo[idx]
        rawtx = self.nodes[0].createrawtransaction([{"txid": mn.collateral_txid, "vout": mn.collateral_vout}], {self.nodes[0].getnewaddress(): 999.9999})
        rawtx = self.nodes[0].signrawtransaction(rawtx)
        self.nodes[0].sendrawtransaction(rawtx["hex"])
        self.nodes[0].generate(1)
        self.sync_all()
        self.mninfo.remove(mn)

    def prepare_datadirs(self):
        # stop faucet node so that we can copy the datadir
        stop_node(self.nodes[0], 0)

        start_idx = len(self.nodes)
        for idx in range(0, self.mn_count):
            copy_datadir(0, idx + start_idx, self.options.tmpdir)

        # restart faucet node
        self.nodes[0] = start_node(0, self.options.tmpdir, self.extra_args)

    def start_masternodes(self):
        start_idx = len(self.nodes)

        for idx in range(0, self.mn_count):
            self.nodes.append(None)
        executor = ThreadPoolExecutor(max_workers=20)

        def do_start(idx):
            args = ['-masternode=1',
                    '-masternodeblsprivkey=%s' % self.mninfo[idx].keyOperator] + self.extra_args
            node = start_node(idx + start_idx, self.options.tmpdir, args)
            self.mninfo[idx].nodeIdx = idx + start_idx
            self.mninfo[idx].node = node
            self.nodes[idx + start_idx] = node
            wait_to_sync(node, True)

        def do_connect(idx):
            for i in range(0, idx + 1):
                connect_nodes(self.nodes[idx + start_idx], i)

        jobs = []

        # start up nodes in parallel
        for idx in range(0, self.mn_count):
            jobs.append(executor.submit(do_start, idx))

        # wait for all nodes to start up
        for job in jobs:
            job.result()
        jobs.clear()

        # connect nodes in parallel
        for idx in range(0, self.mn_count):
            jobs.append(executor.submit(do_connect, idx))

        # wait for all nodes to connect
        for job in jobs:
            job.result()
        jobs.clear()

        sync_masternodes(self.nodes, True)

        executor.shutdown()

    def setup_network(self):
        self.nodes = []
        # create faucet node for collateral and transactions
        self.nodes.append(start_node(0, self.options.tmpdir, self.extra_args))
        required_balance = MASTERNODE_COLLATERAL * self.mn_count + 1
        while self.nodes[0].getbalance() < required_balance:
            set_mocktime(get_mocktime() + 1)
            set_node_times(self.nodes, get_mocktime())
            self.nodes[0].generate(1)
        # create connected simple nodes
        for i in range(0, self.num_nodes - self.mn_count - 1):
            self.create_simple_node()
        sync_masternodes(self.nodes, True)

        # activate DIP3
        if not self.fast_dip3_enforcement:
            while self.nodes[0].getblockcount() < 500:
                self.nodes[0].generate(10)
        self.sync_all()

        # create masternodes
        self.prepare_masternodes()
        self.prepare_datadirs()
        self.start_masternodes()

        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(1)
        # sync nodes
        self.sync_all()
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())

        mn_info = self.nodes[0].masternodelist("status")
        assert (len(mn_info) == self.mn_count)
        for status in mn_info.values():
            assert (status == 'ENABLED')

    def get_autois_bip9_status(self, node):
        info = node.getblockchaininfo()
        # we reuse the dip3 deployment
        return info['bip9_softforks']['dip0003']['status']

    def activate_autois_bip9(self, node):
        # sync nodes periodically
        # if we sync them too often, activation takes too many time
        # if we sync them too rarely, nodes failed to update its state and
        # bip9 status is not updated
        # so, in this code nodes are synced once per 20 blocks
        counter = 0
        sync_period = 10

        while self.get_autois_bip9_status(node) == 'defined':
            set_mocktime(get_mocktime() + 1)
            set_node_times(self.nodes, get_mocktime())
            node.generate(1)
            counter += 1
            if counter % sync_period == 0:
                # sync nodes
                self.sync_all()

        while self.get_autois_bip9_status(node) == 'started':
            set_mocktime(get_mocktime() + 1)
            set_node_times(self.nodes, get_mocktime())
            node.generate(1)
            counter += 1
            if counter % sync_period == 0:
                # sync nodes
                self.sync_all()

        while self.get_autois_bip9_status(node) == 'locked_in':
            set_mocktime(get_mocktime() + 1)
            set_node_times(self.nodes, get_mocktime())
            node.generate(1)
            counter += 1
            if counter % sync_period == 0:
                # sync nodes
                self.sync_all()

        # sync nodes
        self.sync_all()

        assert(self.get_autois_bip9_status(node) == 'active')

    def get_autois_spork_state(self, node):
        info = node.spork('active')
        return info['SPORK_16_INSTANTSEND_AUTOLOCKS']

    def set_autois_spork_state(self, node, state):
        # Increment mocktime as otherwise nodes will not update sporks
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        if state:
            value = 0
        else:
            value = 4070908800
        node.spork('SPORK_16_INSTANTSEND_AUTOLOCKS', value)

    def create_raw_tx(self, node_from, node_to, amount, min_inputs, max_inputs):
        assert (min_inputs <= max_inputs)
        # fill inputs
        inputs = []
        balances = node_from.listunspent()
        in_amount = 0.0
        last_amount = 0.0
        for tx in balances:
            if len(inputs) < min_inputs:
                input = {}
                input["txid"] = tx['txid']
                input['vout'] = tx['vout']
                in_amount += float(tx['amount'])
                inputs.append(input)
            elif in_amount > amount:
                break
            elif len(inputs) < max_inputs:
                input = {}
                input["txid"] = tx['txid']
                input['vout'] = tx['vout']
                in_amount += float(tx['amount'])
                inputs.append(input)
            else:
                input = {}
                input["txid"] = tx['txid']
                input['vout'] = tx['vout']
                in_amount -= last_amount
                in_amount += float(tx['amount'])
                inputs[-1] = input
            last_amount = float(tx['amount'])

        assert (len(inputs) >= min_inputs)
        assert (len(inputs) <= max_inputs)
        assert (in_amount >= amount)
        # fill outputs
        receiver_address = node_to.getnewaddress()
        change_address = node_from.getnewaddress()
        fee = 0.001
        outputs = {}
        outputs[receiver_address] = satoshi_round(amount)
        outputs[change_address] = satoshi_round(in_amount - amount - fee)
        rawtx = node_from.createrawtransaction(inputs, outputs)
        ret = node_from.signrawtransaction(rawtx)
        decoded = node_from.decoderawtransaction(ret['hex'])
        ret = {**decoded, **ret}
        return ret

    # sends regular instantsend with high fee
    def send_regular_instantsend(self, sender, receiver, check_fee = True):
        receiver_addr = receiver.getnewaddress()
        txid = sender.instantsendtoaddress(receiver_addr, 1.0)
        if (check_fee):
            MIN_FEE = satoshi_round(-0.0001)
            fee = sender.gettransaction(txid)['fee']
            expected_fee = MIN_FEE * len(sender.getrawtransaction(txid, True)['vin'])
            assert_equal(fee, expected_fee)
        return self.wait_for_instantlock(txid, sender)

    # sends simple tx, it should become locked if autolocks are allowed
    def send_simple_tx(self, sender, receiver):
        raw_tx = self.create_raw_tx(sender, receiver, 1.0, 1, 4)
        txid = self.nodes[0].sendrawtransaction(raw_tx['hex'])
        self.sync_all()
        return self.wait_for_instantlock(txid, sender)

    # sends complex tx, it should never become locked for old instentsend
    def send_complex_tx(self, sender, receiver):
        raw_tx = self.create_raw_tx(sender, receiver, 1.0, 5, 100)
        txid = sender.sendrawtransaction(raw_tx['hex'])
        self.sync_all()
        return self.wait_for_instantlock(txid, sender)

    def wait_for_instantlock(self, txid, node):
        # wait for instantsend locks
        start = time.time()
        locked = False
        while True:
            try:
                is_tx = node.getrawtransaction(txid, True)
                if is_tx['instantlock']:
                    locked = True
                    break
            except:
                # TX not received yet?
                pass
            if time.time() > start + 10:
                break
            time.sleep(0.5)
        return locked

    def wait_for_sporks_same(self, timeout=30):
        st = time.time()
        while time.time() < st + timeout:
            if self.check_sporks_same():
                return
            time.sleep(0.5)
        raise AssertionError("wait_for_sporks_same timed out")

    def check_sporks_same(self):
        sporks = self.nodes[0].spork('show')
        for node in self.nodes[1:]:
            sporks2 = node.spork('show')
            if sporks != sporks2:
                return False
        return True

    def wait_for_quorum_phase(self, phase, check_received_messages, check_received_messages_count, timeout=30):
        t = time.time()
        while time.time() - t < timeout:
            all_ok = True
            for mn in self.mninfo:
                s = mn.node.quorum("dkgstatus")["session"]
                if "llmq_5_60" not in s:
                    all_ok = False
                    break
                s = s["llmq_5_60"]
                if "phase" not in s:
                    all_ok = False
                    break
                if s["phase"] != phase:
                    all_ok = False
                    break
                if check_received_messages is not None:
                    if s[check_received_messages] < check_received_messages_count:
                        all_ok = False
                        break
            if all_ok:
                return
            time.sleep(0.1)
        raise AssertionError("wait_for_quorum_phase timed out")

    def wait_for_quorum_commitment(self, timeout = 15):
        t = time.time()
        while time.time() - t < timeout:
            all_ok = True
            for node in self.nodes:
                s = node.quorum("dkgstatus")
                if "minableCommitments" not in s:
                    all_ok = False
                    break
                s = s["minableCommitments"]
                if "llmq_5_60" not in s:
                    all_ok = False
                    break
            if all_ok:
                return
            time.sleep(0.1)
        raise AssertionError("wait_for_quorum_commitment timed out")

    def mine_quorum(self, expected_contributions=5, expected_complaints=0, expected_justifications=0, expected_commitments=5):
        quorums = self.nodes[0].quorum("list")

        # move forward to next DKG
        skip_count = 24 - (self.nodes[0].getblockcount() % 24)
        if skip_count != 0:
            set_mocktime(get_mocktime() + 1)
            set_node_times(self.nodes, get_mocktime())
            self.nodes[0].generate(skip_count)
        sync_blocks(self.nodes)

        # Make sure all reached phase 1 (init)
        self.wait_for_quorum_phase(1, None, 0)
        # Give nodes some time to connect to neighbors
        time.sleep(2)
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(2)
        sync_blocks(self.nodes)

        # Make sure all reached phase 2 (contribute) and received all contributions
        self.wait_for_quorum_phase(2, "receivedContributions", expected_contributions)
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(2)
        sync_blocks(self.nodes)

        # Make sure all reached phase 3 (complain) and received all complaints
        self.wait_for_quorum_phase(3, "receivedComplaints", expected_complaints)
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(2)
        sync_blocks(self.nodes)

        # Make sure all reached phase 4 (justify)
        self.wait_for_quorum_phase(4, "receivedJustifications", expected_justifications)
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(2)
        sync_blocks(self.nodes)

        # Make sure all reached phase 5 (commit)
        self.wait_for_quorum_phase(5, "receivedPrematureCommitments", expected_commitments)
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(2)
        sync_blocks(self.nodes)

        # Make sure all reached phase 6 (mining)
        self.wait_for_quorum_phase(6, None, 0)

        # Wait for final commitment
        self.wait_for_quorum_commitment()

        # mine the final commitment
        set_mocktime(get_mocktime() + 1)
        set_node_times(self.nodes, get_mocktime())
        self.nodes[0].generate(1)
        while quorums == self.nodes[0].quorum("list"):
            time.sleep(2)
            set_mocktime(get_mocktime() + 1)
            set_node_times(self.nodes, get_mocktime())
            self.nodes[0].generate(1)
            sync_blocks(self.nodes)
        new_quorum = self.nodes[0].quorum("list", 1)["llmq_5_60"][0]

        # Mine 8 (SIGN_HEIGHT_OFFSET) more blocks to make sure that the new quorum gets eligable for signing sessions
        self.nodes[0].generate(8)

        sync_blocks(self.nodes)

        return new_quorum

# Test framework for doing p2p comparison testing, which sets up some bitcoind
# binaries:
# 1 binary: test binary
# 2 binaries: 1 test binary, 1 ref binary
# n>2 binaries: 1 test binary, n-1 ref binaries

class ComparisonTestFramework(BitcoinTestFramework):

    def __init__(self):
        super().__init__()
        self.num_nodes = 2
        self.setup_clean_chain = True

    def add_options(self, parser):
        parser.add_option("--testbinary", dest="testbinary",
                          default=os.getenv("BITCOIND", "dashd"),
                          help="dashd binary to test")
        parser.add_option("--refbinary", dest="refbinary",
                          default=os.getenv("BITCOIND", "dashd"),
                          help="dashd binary to use for reference nodes (if any)")

    def setup_network(self):
        self.nodes = start_nodes(
            self.num_nodes, self.options.tmpdir,
            extra_args=[['-whitelist=127.0.0.1']] * self.num_nodes,
            binary=[self.options.testbinary] +
            [self.options.refbinary]*(self.num_nodes-1))