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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

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1#!/usr/bin/env python3
2# Copyright (c) 2014-present The Bitcoin Core developers
3# Distributed under the MIT software license, see the accompanying
4# file COPYING or http://www.opensource.org/licenses/mit-license.php.
5"""Test the wallet accounts properly when there is a double-spend conflict."""
6from decimal import Decimal
7
8from test_framework.test_framework import BitcoinTestFramework
9from test_framework.util import (
10    assert_equal,
11)
12
13
14class TxnMallTest(BitcoinTestFramework):
15    def set_test_params(self):
16        self.num_nodes = 3
17
18    def skip_test_if_missing_module(self):
19        self.skip_if_no_wallet()
20
21    def add_options(self, parser):
22        parser.add_argument("--mineblock", dest="mine_block", default=False, action="store_true",
23                            help="Test double-spend of 1-confirmed transaction")
24
25    def setup_network(self):
26        # Start with split network:
27        super().setup_network()
28        self.disconnect_nodes(1, 2)
29
30    def spend_utxo(self, utxo, outputs):
31        inputs = [utxo]
32        tx = self.nodes[0].createrawtransaction(inputs, outputs)
33        tx = self.nodes[0].fundrawtransaction(tx)
34        tx = self.nodes[0].signrawtransactionwithwallet(tx['hex'])
35        return self.nodes[0].sendrawtransaction(tx['hex'])
36
37    def run_test(self):
38        # All nodes should start with 1,250 BTC:
39        starting_balance = 1250
40
41        # All nodes should be out of IBD.
42        # If the nodes are not all out of IBD, that can interfere with
43        # blockchain sync later in the test when nodes are connected, due to
44        # timing issues.
45        for n in self.nodes:
46            assert_equal(n.getblockchaininfo()["initialblockdownload"], False)
47
48        for i in range(3):
49            assert_equal(self.nodes[i].getbalance(), starting_balance)
50
51        # Assign coins to foo and bar addresses:
52        node0_address_foo = self.nodes[0].getnewaddress()
53        fund_foo_utxo = self.create_outpoints(self.nodes[0], outputs=[{node0_address_foo: 1219}])[0]
54        fund_foo_tx = self.nodes[0].gettransaction(fund_foo_utxo['txid'])
55        self.nodes[0].lockunspent(False, [fund_foo_utxo])
56
57        node0_address_bar = self.nodes[0].getnewaddress()
58        fund_bar_utxo = self.create_outpoints(node=self.nodes[0], outputs=[{node0_address_bar: 29}])[0]
59        fund_bar_tx = self.nodes[0].gettransaction(fund_bar_utxo['txid'])
60
61        assert_equal(self.nodes[0].getbalance(),
62                     starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"])
63
64        # Coins are sent to node1_address
65        node1_address = self.nodes[1].getnewaddress()
66
67        # First: use raw transaction API to send 1240 BTC to node1_address,
68        # but don't broadcast:
69        doublespend_fee = Decimal('-.02')
70        inputs = [fund_foo_utxo, fund_bar_utxo]
71        change_address = self.nodes[0].getnewaddress()
72        outputs = {}
73        outputs[node1_address] = 1240
74        outputs[change_address] = 1248 - 1240 + doublespend_fee
75        rawtx = self.nodes[0].createrawtransaction(inputs, outputs)
76        doublespend = self.nodes[0].signrawtransactionwithwallet(rawtx)
77        assert_equal(doublespend["complete"], True)
78
79        # Create two spends using 1 50 BTC coin each
80        txid1 = self.spend_utxo(fund_foo_utxo, {node1_address: 40})
81        txid2 = self.spend_utxo(fund_bar_utxo, {node1_address: 20})
82
83        # Have node0 mine a block:
84        if (self.options.mine_block):
85            self.generate(self.nodes[0], 1, sync_fun=lambda: self.sync_blocks(self.nodes[0:2]))
86
87        tx1 = self.nodes[0].gettransaction(txid1)
88        tx2 = self.nodes[0].gettransaction(txid2)
89
90        # Node0's balance should be starting balance, plus 50BTC for another
91        # matured block, minus 40, minus 20, and minus transaction fees:
92        expected = starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"]
93        if self.options.mine_block:
94            expected += 50
95        expected += tx1["amount"] + tx1["fee"]
96        expected += tx2["amount"] + tx2["fee"]
97        assert_equal(self.nodes[0].getbalance(), expected)
98
99        if self.options.mine_block:
100            assert_equal(tx1["confirmations"], 1)
101            assert_equal(tx2["confirmations"], 1)
102            # Node1's balance should be both transaction amounts:
103            assert_equal(self.nodes[1].getbalance(), starting_balance - tx1["amount"] - tx2["amount"])
104        else:
105            assert_equal(tx1["confirmations"], 0)
106            assert_equal(tx2["confirmations"], 0)
107
108        # Now give doublespend and its parents to miner:
109        self.nodes[2].sendrawtransaction(fund_foo_tx["hex"])
110        self.nodes[2].sendrawtransaction(fund_bar_tx["hex"])
111        doublespend_txid = self.nodes[2].sendrawtransaction(doublespend["hex"])
112        # ... mine a block...
113        self.generate(self.nodes[2], 1, sync_fun=self.no_op)
114
115        # Reconnect the split network, and sync chain:
116        self.connect_nodes(1, 2)
117        self.generate(self.nodes[2], 1)  # Mine another block to make sure we sync
118        assert_equal(self.nodes[0].gettransaction(doublespend_txid)["confirmations"], 2)
119
120        # Re-fetch transaction info:
121        tx1 = self.nodes[0].gettransaction(txid1)
122        tx2 = self.nodes[0].gettransaction(txid2)
123
124        # Both transactions should be conflicted
125        assert_equal(tx1["confirmations"], -2)
126        assert_equal(tx2["confirmations"], -2)
127
128        # Node0's total balance should be starting balance, plus 100BTC for
129        # two more matured blocks, minus 1240 for the double-spend, plus fees (which are
130        # negative):
131        expected = starting_balance + 100 - 1240 + fund_foo_tx["fee"] + fund_bar_tx["fee"] + doublespend_fee
132        assert_equal(self.nodes[0].getbalance(), expected)
133
134        # Node1's balance should be its initial balance (1250 for 25 block rewards) plus the doublespend:
135        assert_equal(self.nodes[1].getbalance(), 1250 + 1240)
136
137
138if __name__ == '__main__':
139    TxnMallTest(__file__).main()
140

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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