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Diffstat (limited to 'test/functional/txn_doublespend.py')
| -rwxr-xr-x | test/functional/txn_doublespend.py | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/test/functional/txn_doublespend.py b/test/functional/txn_doublespend.py new file mode 100755 index 0000000000..5b12cf4c29 --- /dev/null +++ b/test/functional/txn_doublespend.py @@ -0,0 +1,144 @@ +#!/usr/bin/env python3 +# Copyright (c) 2014-2016 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 the wallet accounts properly when there is a double-spend conflict.""" + +from test_framework.test_framework import BitcoinTestFramework +from test_framework.util import * + +class TxnMallTest(BitcoinTestFramework): + + def __init__(self): + super().__init__() + self.num_nodes = 4 + self.setup_clean_chain = False + + def add_options(self, parser): + parser.add_option("--mineblock", dest="mine_block", default=False, action="store_true", + help="Test double-spend of 1-confirmed transaction") + + def setup_network(self): + # Start with split network: + return super(TxnMallTest, self).setup_network(True) + + def run_test(self): + # All nodes should start with 1,250 BTC: + starting_balance = 1250 + for i in range(4): + assert_equal(self.nodes[i].getbalance(), starting_balance) + self.nodes[i].getnewaddress("") # bug workaround, coins generated assigned to first getnewaddress! + + # Assign coins to foo and bar accounts: + node0_address_foo = self.nodes[0].getnewaddress("foo") + fund_foo_txid = self.nodes[0].sendfrom("", node0_address_foo, 1219) + fund_foo_tx = self.nodes[0].gettransaction(fund_foo_txid) + + node0_address_bar = self.nodes[0].getnewaddress("bar") + fund_bar_txid = self.nodes[0].sendfrom("", node0_address_bar, 29) + fund_bar_tx = self.nodes[0].gettransaction(fund_bar_txid) + + assert_equal(self.nodes[0].getbalance(""), + starting_balance - 1219 - 29 + fund_foo_tx["fee"] + fund_bar_tx["fee"]) + + # Coins are sent to node1_address + node1_address = self.nodes[1].getnewaddress("from0") + + # First: use raw transaction API to send 1240 BTC to node1_address, + # but don't broadcast: + doublespend_fee = Decimal('-.02') + rawtx_input_0 = {} + rawtx_input_0["txid"] = fund_foo_txid + rawtx_input_0["vout"] = find_output(self.nodes[0], fund_foo_txid, 1219) + rawtx_input_1 = {} + rawtx_input_1["txid"] = fund_bar_txid + rawtx_input_1["vout"] = find_output(self.nodes[0], fund_bar_txid, 29) + inputs = [rawtx_input_0, rawtx_input_1] + change_address = self.nodes[0].getnewaddress() + outputs = {} + outputs[node1_address] = 1240 + outputs[change_address] = 1248 - 1240 + doublespend_fee + rawtx = self.nodes[0].createrawtransaction(inputs, outputs) + doublespend = self.nodes[0].signrawtransaction(rawtx) + assert_equal(doublespend["complete"], True) + + # Create two spends using 1 50 BTC coin each + txid1 = self.nodes[0].sendfrom("foo", node1_address, 40, 0) + txid2 = self.nodes[0].sendfrom("bar", node1_address, 20, 0) + + # Have node0 mine a block: + if (self.options.mine_block): + self.nodes[0].generate(1) + sync_blocks(self.nodes[0:2]) + + tx1 = self.nodes[0].gettransaction(txid1) + tx2 = self.nodes[0].gettransaction(txid2) + + # Node0's balance should be starting balance, plus 50BTC for another + # matured block, minus 40, minus 20, and minus transaction fees: + expected = starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"] + if self.options.mine_block: expected += 50 + expected += tx1["amount"] + tx1["fee"] + expected += tx2["amount"] + tx2["fee"] + assert_equal(self.nodes[0].getbalance(), expected) + + # foo and bar accounts should be debited: + assert_equal(self.nodes[0].getbalance("foo", 0), 1219+tx1["amount"]+tx1["fee"]) + assert_equal(self.nodes[0].getbalance("bar", 0), 29+tx2["amount"]+tx2["fee"]) + + if self.options.mine_block: + assert_equal(tx1["confirmations"], 1) + assert_equal(tx2["confirmations"], 1) + # Node1's "from0" balance should be both transaction amounts: + assert_equal(self.nodes[1].getbalance("from0"), -(tx1["amount"]+tx2["amount"])) + else: + assert_equal(tx1["confirmations"], 0) + assert_equal(tx2["confirmations"], 0) + + # Now give doublespend and its parents to miner: + self.nodes[2].sendrawtransaction(fund_foo_tx["hex"]) + self.nodes[2].sendrawtransaction(fund_bar_tx["hex"]) + doublespend_txid = self.nodes[2].sendrawtransaction(doublespend["hex"]) + # ... mine a block... + self.nodes[2].generate(1) + + # Reconnect the split network, and sync chain: + connect_nodes(self.nodes[1], 2) + self.nodes[2].generate(1) # Mine another block to make sure we sync + sync_blocks(self.nodes) + assert_equal(self.nodes[0].gettransaction(doublespend_txid)["confirmations"], 2) + + # Re-fetch transaction info: + tx1 = self.nodes[0].gettransaction(txid1) + tx2 = self.nodes[0].gettransaction(txid2) + + # Both transactions should be conflicted + assert_equal(tx1["confirmations"], -2) + assert_equal(tx2["confirmations"], -2) + + # Node0's total balance should be starting balance, plus 100BTC for + # two more matured blocks, minus 1240 for the double-spend, plus fees (which are + # negative): + expected = starting_balance + 100 - 1240 + fund_foo_tx["fee"] + fund_bar_tx["fee"] + doublespend_fee + assert_equal(self.nodes[0].getbalance(), expected) + assert_equal(self.nodes[0].getbalance("*"), expected) + + # Final "" balance is starting_balance - amount moved to accounts - doublespend + subsidies + + # fees (which are negative) + assert_equal(self.nodes[0].getbalance("foo"), 1219) + assert_equal(self.nodes[0].getbalance("bar"), 29) + assert_equal(self.nodes[0].getbalance(""), starting_balance + -1219 + - 29 + -1240 + + 100 + + fund_foo_tx["fee"] + + fund_bar_tx["fee"] + + doublespend_fee) + + # Node1's "from0" account balance should be just the doublespend: + assert_equal(self.nodes[1].getbalance("from0"), 1240) + +if __name__ == '__main__': + TxnMallTest().main() + |