<commit_before>#!/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 longpolling with getblocktemplate."""

import threading
from decimal import Decimal

from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import get_rpc_proxy, random_transaction


class LongpollThread(threading.Thread):

    def __init__(self, node):
        threading.Thread.__init__(self)
        # query current longpollid
        templat = node.getblocktemplate()
        self.longpollid = templat['longpollid']
        # create a new connection to the node, we can't use the same
        # connection from two threads
        self.node = get_rpc_proxy(
            node.url, 1, timeout=600, coveragedir=node.coverage_dir)

    def run(self):
        self.node.getblocktemplate({'longpollid': self.longpollid})


class GetBlockTemplateLPTest(BitcoinTestFramework):
    def set_test_params(self):
        self.num_nodes = 2
        self.supports_cli = False

    def skip_test_if_missing_module(self):
        self.skip_if_no_wallet()

    def run_test(self):
        self.log.info(
            "Warning: this test will take about 70 seconds in the best case. Be patient.")
        self.nodes[0].generate(10)
        templat = self.nodes[0].getblocktemplate()
        longpollid = templat['longpollid']
        # longpollid should not change between successive invocations if
        # nothing else happens
        templat2 = self.nodes[0].getblocktemplate()
        assert templat2['longpollid'] == longpollid

        # Test 1: test that the longpolling wait if we do nothing
        thr = LongpollThread(self.nodes[0])
        thr.start()
        # check that thread still lives
        # wait 5 seconds or until thread exits
        thr.join(5)
        assert thr.is_alive()

        # Test 2: test that longpoll will terminate if another node generates a block
        # generate a block on another node
        self.nodes[1].generate(1)
        # check that thread will exit now that new transaction entered mempool
        # wait 5 seconds or until thread exits
        thr.join(5)
        assert not thr.is_alive()

        # Test 3: test that longpoll will terminate if we generate a block
        # ourselves
        thr = LongpollThread(self.nodes[0])
        thr.start()
        # generate a block on another node
        self.nodes[0].generate(1)
        # wait 5 seconds or until thread exits
        thr.join(5)
        assert not thr.is_alive()

        # Test 4: test that introducing a new transaction into the mempool will
        # terminate the longpoll
        thr = LongpollThread(self.nodes[0])
        thr.start()
        # generate a random transaction and submit it
        min_relay_fee = self.nodes[0].getnetworkinfo()["relayfee"]
        # min_relay_fee is fee per 1000 bytes, which should be more than
        # enough.
        (txid, txhex, fee) = random_transaction(self.nodes,
                                                Decimal("1100000"), min_relay_fee, Decimal("1000"), 20)
        # after one minute, every 10 seconds the mempool is probed, so in 80
        # seconds it should have returned
        thr.join(60 + 20)
        assert not thr.is_alive()


if __name__ == '__main__':
    GetBlockTemplateLPTest().main()<commit_msg>test: use MiniWallet for mining_getblocktemplate_longpoll.py<commit_after>#!/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 longpolling with getblocktemplate."""

import random
import threading
from decimal import Decimal

from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import get_rpc_proxy
from test_framework.wallet import MiniWallet


class LongpollThread(threading.Thread):

    def __init__(self, node):
        threading.Thread.__init__(self)
        # query current longpollid
        templat = node.getblocktemplate()
        self.longpollid = templat['longpollid']
        # create a new connection to the node, we can't use the same
        # connection from two threads
        self.node = get_rpc_proxy(
            node.url, 1, timeout=600, coveragedir=node.coverage_dir)

    def run(self):
        self.node.getblocktemplate({'longpollid': self.longpollid})


class GetBlockTemplateLPTest(BitcoinTestFramework):
    def set_test_params(self):
        self.num_nodes = 2
        self.supports_cli = False

    def run_test(self):
        self.log.info(
            "Warning: this test will take about 70 seconds in the best case. Be patient.")
        self.nodes[0].generate(10)
        templat = self.nodes[0].getblocktemplate()
        longpollid = templat['longpollid']
        # longpollid should not change between successive invocations if
        # nothing else happens
        templat2 = self.nodes[0].getblocktemplate()
        assert templat2['longpollid'] == longpollid

        # Test 1: test that the longpolling wait if we do nothing
        thr = LongpollThread(self.nodes[0])
        thr.start()
        # check that thread still lives
        # wait 5 seconds or until thread exits
        thr.join(5)
        assert thr.is_alive()

        miniwallets = [MiniWallet(node) for node in self.nodes]
        # Test 2: test that longpoll will terminate if another node generates a block
        # generate a block on another node
        miniwallets[1].generate(1)
        # check that thread will exit now that new transaction entered mempool
        # wait 5 seconds or until thread exits
        thr.join(5)
        assert not thr.is_alive()

        # Test 3: test that longpoll will terminate if we generate a block
        # ourselves
        thr = LongpollThread(self.nodes[0])
        thr.start()
        # generate a block on own node
        miniwallets[0].generate(1)
        # wait 5 seconds or until thread exits
        thr.join(5)
        assert not thr.is_alive()

        # Add enough mature utxos to the wallets, so that all txs spend
        # confirmed coins
        self.nodes[0].generate(100)
        self.sync_blocks()

        # Test 4: test that introducing a new transaction into the mempool will
        # terminate the longpoll
        thr = LongpollThread(self.nodes[0])
        thr.start()
        # generate a random transaction and submit it
        min_relay_fee = self.nodes[0].getnetworkinfo()["relayfee"]
        fee_rate = min_relay_fee + Decimal('0.10') * random.randint(0, 20)
        miniwallets[0].send_self_transfer(from_node=random.choice(self.nodes),
                                          fee_rate=fee_rate)
        # after one minute, every 10 seconds the mempool is probed, so in 80
        # seconds it should have returned
        thr.join(60 + 20)
        assert not thr.is_alive()


if __name__ == '__main__':
    GetBlockTemplateLPTest().main()
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