Initial Vexta Core v0.1.0 release

test/functional/mining_getblocktemplate_longpoll.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+# Copyright (c) 2014-2021 The DigiByte 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."""
+
+from decimal import Decimal
+import random
+import threading
+
+from test_framework.blocktools import COINBASE_MATURITY
+from test_framework.test_framework import DigiByteTestFramework
+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
+        template = node.getblocktemplate({'rules': ['segwit']})
+        self.longpollid = template['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, 'rules': ['segwit']})
+
+class GetBlockTemplateLPTest(DigiByteTestFramework):
+    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.log.info("Test that longpollid doesn't change between successive getblocktemplate() invocations if nothing else happens")
+        self.generate(self.nodes[0], 10)
+        template = self.nodes[0].getblocktemplate({'rules': ['segwit']})
+        longpollid = template['longpollid']
+        template2 = self.nodes[0].getblocktemplate({'rules': ['segwit']})
+        assert template2['longpollid'] == longpollid
+
+        self.log.info("Test that longpoll waits if we do nothing")
+        thr = LongpollThread(self.nodes[0])
+        thr.start()
+        # check that thread still lives
+        thr.join(5)  # wait 5 seconds or until thread exits
+        assert thr.is_alive()
+
+        miniwallets = [MiniWallet(node) for node in self.nodes]
+        self.log.info("Test that longpoll will terminate if another node generates a block")
+        self.generate(miniwallets[1], 1)  # generate a block on another node
+        # check that thread will exit now that new transaction entered mempool
+        thr.join(5)  # wait 5 seconds or until thread exits
+        assert not thr.is_alive()
+
+        self.log.info("Test that longpoll will terminate if we generate a block ourselves")
+        thr = LongpollThread(self.nodes[0])
+        thr.start()
+        self.generate(miniwallets[0], 1)  # generate a block on own node
+        thr.join(5)  # wait 5 seconds or until thread exits
+        assert not thr.is_alive()
+
+        # Add enough mature utxos to the wallets, so that all txs spend confirmed coins
+        self.generate(self.nodes[0], COINBASE_MATURITY)
+
+        self.log.info("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('0.00000010') * 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()