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80 lines
3.2 KiB
Python
Executable File
80 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2018 The Dash Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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from test_framework.mininode import *
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from test_framework.test_framework import DashTestFramework
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from test_framework.util import *
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from time import *
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'''
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InstantSendTest -- test InstantSend functionality (prevent doublespend for unconfirmed transactions)
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'''
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class InstantSendTest(DashTestFramework):
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def __init__(self):
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super().__init__(14, 10, [])
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# set sender, receiver, isolated nodes
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self.isolated_idx = self.num_nodes - 1
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self.receiver_idx = self.num_nodes - 2
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self.sender_idx = self.num_nodes - 3
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def run_test(self):
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# feed the sender with some balance
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sender_addr = self.nodes[self.sender_idx].getnewaddress()
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self.nodes[0].sendtoaddress(sender_addr, 1)
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# make sender funds mature for InstantSend
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for i in range(0, 2):
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set_mocktime(get_mocktime() + 1)
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set_node_times(self.nodes, get_mocktime())
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self.nodes[0].generate(1)
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self.sync_all()
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# create doublepending transaction, but don't relay it
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dblspnd_tx = self.create_raw_trx(self.nodes[self.sender_idx],
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self.nodes[self.isolated_idx],
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0.5, 1, 100)
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# stop one node to isolate it from network
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stop_node(self.nodes[self.isolated_idx], self.isolated_idx)
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# instantsend to receiver
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receiver_addr = self.nodes[self.receiver_idx].getnewaddress()
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is_id = self.nodes[self.sender_idx].instantsendtoaddress(receiver_addr, 0.9)
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# wait for instantsend locks
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start = time()
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locked = False
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while True:
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is_trx = self.nodes[self.sender_idx].gettransaction(is_id)
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if is_trx['instantlock']:
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locked = True
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break
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if time() > start + 10:
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break
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sleep(0.1)
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assert(locked)
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# start last node
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self.nodes[self.isolated_idx] = start_node(self.isolated_idx,
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self.options.tmpdir,
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["-debug"])
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# send doublespend transaction to isolated node
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self.nodes[self.isolated_idx].sendrawtransaction(dblspnd_tx['hex'])
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# generate block on isolated node with doublespend transaction
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set_mocktime(get_mocktime() + 1)
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set_node_times(self.nodes, get_mocktime())
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self.nodes[self.isolated_idx].generate(1)
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wrong_block = self.nodes[self.isolated_idx].getbestblockhash()
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# connect isolated block to network
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for i in range(0, self.isolated_idx):
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connect_nodes(self.nodes[i], self.isolated_idx)
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# check doublespend block is rejected by other nodes
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timeout = 10
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for i in range(0, self.isolated_idx):
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res = self.nodes[i].waitforblock(wrong_block, timeout)
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assert (res['hash'] != wrong_block)
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# wait for long time only for first node
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timeout = 1
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if __name__ == '__main__':
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InstantSendTest().main()
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