120 lines
4.8 KiB
Python
Executable File
120 lines
4.8 KiB
Python
Executable File
#!/usr/bin/env python2
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# Copyright (c) 2014 The Bitcoin 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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#
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# Test proper accounting with malleable transactions
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#
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import *
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from decimal import Decimal
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import os
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import shutil
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class TxnMallTest(BitcoinTestFramework):
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def add_options(self, parser):
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parser.add_option("--mineblock", dest="mine_block", default=False, action="store_true",
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help="Test double-spend of 1-confirmed transaction")
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def setup_network(self):
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# Start with split network:
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return super(TxnMallTest, self).setup_network(True)
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def run_test(self):
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# All nodes should start with 1,250 BTC:
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starting_balance = 1250
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for i in range(4):
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assert_equal(self.nodes[i].getbalance(), starting_balance)
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self.nodes[i].getnewaddress("") # bug workaround, coins generated assigned to first getnewaddress!
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# Assign coins to foo and bar accounts:
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self.nodes[0].move("", "foo", 1220)
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self.nodes[0].move("", "bar", 30)
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assert_equal(self.nodes[0].getbalance(""), 0)
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# Coins are sent to node1_address
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node1_address = self.nodes[1].getnewaddress("from0")
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# First: use raw transaction API to send 1210 BTC to node1_address,
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# but don't broadcast:
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(total_in, inputs) = gather_inputs(self.nodes[0], 1210)
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change_address = self.nodes[0].getnewaddress("foo")
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outputs = {}
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outputs[change_address] = 40
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outputs[node1_address] = 1210
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rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
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doublespend = self.nodes[0].signrawtransaction(rawtx)
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assert_equal(doublespend["complete"], True)
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# Create two transaction from node[0] to node[1]; the
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# second must spend change from the first because the first
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# spends all mature inputs:
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txid1 = self.nodes[0].sendfrom("foo", node1_address, 1210, 0)
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txid2 = self.nodes[0].sendfrom("bar", node1_address, 20, 0)
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# Have node0 mine a block:
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if (self.options.mine_block):
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self.nodes[0].generate(1)
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sync_blocks(self.nodes[0:2])
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tx1 = self.nodes[0].gettransaction(txid1)
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tx2 = self.nodes[0].gettransaction(txid2)
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# Node0's balance should be starting balance, plus 50BTC for another
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# matured block, minus 1210, minus 20, and minus transaction fees:
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expected = starting_balance
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if self.options.mine_block: expected += 50
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expected += tx1["amount"] + tx1["fee"]
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expected += tx2["amount"] + tx2["fee"]
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assert_equal(self.nodes[0].getbalance(), expected)
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# foo and bar accounts should be debited:
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assert_equal(self.nodes[0].getbalance("foo"), 1220+tx1["amount"]+tx1["fee"])
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assert_equal(self.nodes[0].getbalance("bar"), 30+tx2["amount"]+tx2["fee"])
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if self.options.mine_block:
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assert_equal(tx1["confirmations"], 1)
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assert_equal(tx2["confirmations"], 1)
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# Node1's "from0" balance should be both transaction amounts:
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assert_equal(self.nodes[1].getbalance("from0"), -(tx1["amount"]+tx2["amount"]))
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else:
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assert_equal(tx1["confirmations"], 0)
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assert_equal(tx2["confirmations"], 0)
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# Now give doublespend to miner:
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mutated_txid = self.nodes[2].sendrawtransaction(doublespend["hex"])
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# ... mine a block...
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self.nodes[2].generate(1)
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# Reconnect the split network, and sync chain:
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connect_nodes(self.nodes[1], 2)
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self.nodes[2].generate(1) # Mine another block to make sure we sync
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sync_blocks(self.nodes)
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# Re-fetch transaction info:
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tx1 = self.nodes[0].gettransaction(txid1)
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tx2 = self.nodes[0].gettransaction(txid2)
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# Both transactions should be conflicted
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assert_equal(tx1["confirmations"], -1)
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assert_equal(tx2["confirmations"], -1)
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# Node0's total balance should be starting balance, plus 100BTC for
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# two more matured blocks, minus 1210 for the double-spend:
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expected = starting_balance + 100 - 1210
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assert_equal(self.nodes[0].getbalance(), expected)
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assert_equal(self.nodes[0].getbalance("*"), expected)
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# foo account should be debited, but bar account should not:
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assert_equal(self.nodes[0].getbalance("foo"), 1220-1210)
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assert_equal(self.nodes[0].getbalance("bar"), 30)
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# Node1's "from" account balance should be just the mutated send:
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assert_equal(self.nodes[1].getbalance("from0"), 1210)
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if __name__ == '__main__':
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TxnMallTest().main()
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