dash/test/functional/test_framework/test_framework.py

#!/usr/bin/env python3
# Copyright (c) 2014-2016 The Bitcoin Core developers
# Copyright (c) 2014-2019 The Dash 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
from enum import Enum
import logging
import optparse
import os
import shutil
import subprocess
import sys
import tempfile
import time
from concurrent.futures import ThreadPoolExecutor

from .util import (
    PortSeed,
    GENESISTIME,
    MAX_NODES,
    assert_equal,
    bitcoind_processes,
    check_json_precision,
    connect_nodes_bi,
    connect_nodes,
    copy_datadir,
    disable_mocktime,
    disconnect_nodes,
    enable_coverage,
    get_mocktime,
    get_rpc_proxy,
    initialize_datadir,
    log_filename,
    p2p_port,
    rpc_url,
    set_cache_mocktime,
    set_genesis_mocktime,
    set_mocktime,
    set_node_times,
    satoshi_round,
    _start_node,
    _start_nodes,
    _stop_node,
    _stop_nodes,
    sync_blocks,
    sync_mempools,
    sync_masternodes,
    wait_for_bitcoind_start,
    wait_to_sync)
from .authproxy import JSONRPCException

class TestStatus(Enum):
    PASSED = 1
    FAILED = 2
    SKIPPED = 3

TEST_EXIT_PASSED = 0
TEST_EXIT_FAILED = 1
TEST_EXIT_SKIPPED = 77

class BitcoinTestFramework(object):
    """Base class for a bitcoin test script.

    Individual bitcoin test scripts should subclass this class and override the following methods:

    - __init__()
    - add_options()
    - setup_chain()
    - setup_network()
    - run_test()

    The main() method should not be overridden.

    This class also contains various public and private helper methods."""

    # Methods to override in subclass test scripts.
    def __init__(self):
        self.num_nodes = 4
        self.setup_clean_chain = False
        self.nodes = None

    def add_options(self, parser):
        pass

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

    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 setup_nodes(self, stderr=None):
        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, stderr=stderr)

    def run_test(self):
        raise NotImplementedError

    # Main function. This should not be overridden by the subclass test scripts.

    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", 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()

        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
        if self.options.tmpdir:
            os.makedirs(self.options.tmpdir, exist_ok=False)
        else:
            self.options.tmpdir = tempfile.mkdtemp(prefix="test")
        self._start_logging()

        success = TestStatus.FAILED

        try:
            self.setup_chain()
            self.setup_network()
            self.run_test()
            success = TestStatus.PASSED
        except JSONRPCException as e:
            self.log.exception("JSONRPC error")
        except SkipTest as e:
            self.log.warning("Test Skipped: %s" % e.message)
            success = TestStatus.SKIPPED
        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:
                if self.nodes:
                    self.stop_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 != TestStatus.FAILED:
            self.log.info("Cleaning up")
            shutil.rmtree(self.options.tmpdir)
        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 == TestStatus.PASSED:
            self.log.info("Tests successful")
            sys.exit(TEST_EXIT_PASSED)
        elif success == TestStatus.SKIPPED:
            self.log.info("Test skipped")
            sys.exit(TEST_EXIT_SKIPPED)
        else:
            self.log.error("Test failed. Test logging available at %s/test_framework.log", self.options.tmpdir)
            logging.shutdown()
            sys.exit(TEST_EXIT_FAILED)

    # Public helper methods. These can be accessed by the subclass test scripts.

    def start_node(self, i, dirname, extra_args=None, rpchost=None, timewait=None, binary=None, stderr=None):
        return _start_node(i, dirname, extra_args, rpchost, timewait, binary, stderr)

    def start_nodes(self, num_nodes, dirname, extra_args=None, rpchost=None, timewait=None, binary=None, stderr=None):
        return _start_nodes(num_nodes, dirname, extra_args, rpchost, timewait, binary, stderr)

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

    def stop_nodes(self):
        _stop_nodes(self.nodes)

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

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

        for group in node_groups:
            sync_blocks(group)
            sync_mempools(group)

    # Private helper methods. These should not be accessed by the subclass test scripts.

    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)

    def _initialize_chain(self, test_dir, num_nodes, cachedir, extra_args=None, stderr=None):
        """Initialize a pre-mined blockchain for use by the test.

        Create a cache of a 200-block-long chain (with wallet) for MAX_NODES
        Afterward, create num_nodes copies from the cache."""

        assert num_nodes <= MAX_NODES
        create_cache = False
        for i in range(MAX_NODES):
            if not os.path.isdir(os.path.join(cachedir, 'node' + str(i))):
                create_cache = True
                break

        if create_cache:
            self.log.debug("Creating data directories from cached datadir")

            # find and delete old cache directories if any exist
            for i in range(MAX_NODES):
                if os.path.isdir(os.path.join(cachedir, "node" + str(i))):
                    shutil.rmtree(os.path.join(cachedir, "node" + str(i)))

            # Create cache directories, run dashds:
            set_genesis_mocktime()
            for i in range(MAX_NODES):
                datadir = initialize_datadir(cachedir, i)
                args = [os.getenv("DASHD", "dashd"), "-server", "-keypool=1", "-datadir=" + datadir, "-discover=0", "-mocktime="+str(GENESISTIME)]
                if i > 0:
                    args.append("-connect=127.0.0.1:" + str(p2p_port(0)))
                if extra_args is not None:
                    args.extend(extra_args)
                bitcoind_processes[i] = subprocess.Popen(args, stderr=stderr)
                self.log.debug("initialize_chain: dashd started, waiting for RPC to come up")
                wait_for_bitcoind_start(bitcoind_processes[i], rpc_url(i), i)
                self.log.debug("initialize_chain: RPC successfully started")

            self.nodes = []
            for i in range(MAX_NODES):
                try:
                    self.nodes.append(get_rpc_proxy(rpc_url(i), i))
                except:
                    self.log.exception("Error connecting to node %d" % i)
                    sys.exit(1)

            # Create a 200-block-long chain; each of the 4 first nodes
            # gets 25 mature blocks and 25 immature.
            # Note: To preserve compatibility with older versions of
            # initialize_chain, only 4 nodes will generate coins.
            #
            # blocks are created with timestamps 10 minutes apart
            # starting from 2010 minutes in the past
            block_time = GENESISTIME
            for i in range(2):
                for peer in range(4):
                    for j in range(25):
                        set_node_times(self.nodes, block_time)
                        self.nodes[peer].generate(1)
                        block_time += 156
                    # Must sync before next peer starts generating blocks
                    sync_blocks(self.nodes)

            # Shut them down, and clean up cache directories:
            self.stop_nodes()
            self.nodes = []
            disable_mocktime()
            for i in range(MAX_NODES):
                os.remove(log_filename(cachedir, i, "debug.log"))
                os.remove(log_filename(cachedir, i, "db.log"))
                os.remove(log_filename(cachedir, i, "peers.dat"))
                os.remove(log_filename(cachedir, i, "fee_estimates.dat"))

        for i in range(num_nodes):
            from_dir = os.path.join(cachedir, "node" + str(i))
            to_dir = os.path.join(test_dir, "node" + str(i))
            shutil.copytree(from_dir, to_dir)
            initialize_datadir(test_dir, i)  # Overwrite port/rpcport in dsah.conf

    def _initialize_chain_clean(self, test_dir, num_nodes):
        """Initialize empty blockchain for use by the test.

        Create an empty blockchain and num_nodes wallets.
        Useful if a test case wants complete control over initialization."""
        for i in range(num_nodes):
            initialize_datadir(test_dir, i)


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
        self.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] = self.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 = self.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 SkipTest(Exception):
    """This exception is raised to skip a test"""
    def __init__(self, message):
        self.message = message

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