105 lines
4.7 KiB
Python
Executable file
105 lines
4.7 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2019 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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"""Test tx status in case of reorgs while wallet being shutdown.
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Wallet txn status rely on block connection/disconnection for its
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accuracy. In case of reorgs happening while wallet being shutdown
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block updates are not going to be received. At wallet loading, we
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check against chain if confirmed txn are still in chain and change
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their status if block in which they have been included has been
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disconnected.
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"""
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from decimal import Decimal
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import os
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import shutil
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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connect_nodes,
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disconnect_nodes,
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)
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class ReorgsRestoreTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 3
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def run_test(self):
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# Send a tx from which to conflict outputs later
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txid_conflict_from = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("0.2"))
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self.nodes[0].generate(1)
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self.sync_blocks()
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# Disconnect node1 from others to reorg its chain later
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disconnect_nodes(self.nodes[0], 1)
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disconnect_nodes(self.nodes[1], 2)
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connect_nodes(self.nodes[0], 2)
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# Send a tx to be unconfirmed later
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txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("0.2"))
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tx = self.nodes[0].gettransaction(txid)
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self.nodes[0].generate(4)
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tx_before_reorg = self.nodes[0].gettransaction(txid)
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assert_equal(tx_before_reorg["confirmations"], 4)
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# Disconnect node0 from node2 to broadcast a conflict on their respective chains
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disconnect_nodes(self.nodes[0], 2)
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nA = next(tx_out["vout"] for tx_out in self.nodes[0].gettransaction(txid_conflict_from)["details"] if tx_out["amount"] == Decimal("0.2"))
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inputs = []
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inputs.append({"txid": txid_conflict_from, "vout": nA})
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outputs_1 = {}
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outputs_2 = {}
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# Create a conflicted tx broadcast on node0 chain and conflicting tx broadcast on node1 chain. Both spend from txid_conflict_from
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outputs_1[self.nodes[0].getnewaddress()] = Decimal("0.199992")
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outputs_2[self.nodes[0].getnewaddress()] = Decimal("0.199992")
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conflicted = self.nodes[0].signrawtransactionwithwallet(self.nodes[0].createrawtransaction(inputs, outputs_1))
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conflicting = self.nodes[0].signrawtransactionwithwallet(self.nodes[0].createrawtransaction(inputs, outputs_2))
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conflicted_txid = self.nodes[0].sendrawtransaction(conflicted["hex"])
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self.nodes[0].generate(1)
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conflicting_txid = self.nodes[2].sendrawtransaction(conflicting["hex"])
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self.nodes[2].generate(9)
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# Reconnect node0 and node2 and check that conflicted_txid is effectively conflicted
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connect_nodes(self.nodes[0], 2)
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self.sync_blocks([self.nodes[0], self.nodes[2]])
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conflicted = self.nodes[0].gettransaction(conflicted_txid)
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conflicting = self.nodes[0].gettransaction(conflicting_txid)
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assert_equal(conflicted["confirmations"], -9)
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assert_equal(conflicted["walletconflicts"][0], conflicting["txid"])
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# Node0 wallet is shutdown
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self.stop_node(0)
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self.start_node(0)
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# The block chain re-orgs and the tx is included in a different block
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self.nodes[1].generate(9)
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self.nodes[1].sendrawtransaction(tx["hex"])
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self.nodes[1].generate(1)
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self.nodes[1].sendrawtransaction(conflicted["hex"])
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self.nodes[1].generate(1)
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# Node0 wallet file is loaded on longest sync'ed node1
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self.stop_node(1)
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self.nodes[0].backupwallet(os.path.join(self.nodes[0].datadir, 'wallet.bak'))
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shutil.copyfile(os.path.join(self.nodes[0].datadir, 'wallet.bak'), os.path.join(self.nodes[1].datadir, 'regtest', 'wallet.dat'))
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self.start_node(1)
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tx_after_reorg = self.nodes[1].gettransaction(txid)
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# Check that normal confirmed tx is confirmed again but with different blockhash
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assert_equal(tx_after_reorg["confirmations"], 2)
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assert(tx_before_reorg["blockhash"] != tx_after_reorg["blockhash"])
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conflicted_after_reorg = self.nodes[1].gettransaction(conflicted_txid)
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# Check that conflicted tx is confirmed again with blockhash different than previously conflicting tx
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assert_equal(conflicted_after_reorg["confirmations"], 1)
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assert(conflicting["blockhash"] != conflicted_after_reorg["blockhash"])
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if __name__ == '__main__':
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ReorgsRestoreTest().main()
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