diff options
Diffstat (limited to 'test/functional/wallet_bumpfee.py')
| -rwxr-xr-x | test/functional/wallet_bumpfee.py | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/test/functional/wallet_bumpfee.py b/test/functional/wallet_bumpfee.py new file mode 100755 index 0000000000..2cd4127854 --- /dev/null +++ b/test/functional/wallet_bumpfee.py @@ -0,0 +1,300 @@ +#!/usr/bin/env python3 +# Copyright (c) 2016-2017 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 bumpfee RPC. + +Verifies that the bumpfee RPC creates replacement transactions successfully when +its preconditions are met, and returns appropriate errors in other cases. + +This module consists of around a dozen individual test cases implemented in the +top-level functions named as test_<test_case_description>. The test functions +can be disabled or reordered if needed for debugging. If new test cases are +added in the future, they should try to follow the same convention and not +make assumptions about execution order. +""" + +from test_framework.blocktools import send_to_witness +from test_framework.test_framework import BitcoinTestFramework +from test_framework import blocktools +from test_framework.mininode import CTransaction +from test_framework.util import * + +import io + +# Sequence number that is BIP 125 opt-in and BIP 68-compliant +BIP125_SEQUENCE_NUMBER = 0xfffffffd + +WALLET_PASSPHRASE = "test" +WALLET_PASSPHRASE_TIMEOUT = 3600 + + +class BumpFeeTest(BitcoinTestFramework): + def set_test_params(self): + self.num_nodes = 2 + self.setup_clean_chain = True + self.extra_args = [["-prematurewitness", "-walletprematurewitness", "-deprecatedrpc=addwitnessaddress", "-walletrbf={}".format(i)] + for i in range(self.num_nodes)] + + def run_test(self): + # Encrypt wallet for test_locked_wallet_fails test + self.nodes[1].node_encrypt_wallet(WALLET_PASSPHRASE) + self.start_node(1) + self.nodes[1].walletpassphrase(WALLET_PASSPHRASE, WALLET_PASSPHRASE_TIMEOUT) + + connect_nodes_bi(self.nodes, 0, 1) + self.sync_all() + + peer_node, rbf_node = self.nodes + rbf_node_address = rbf_node.getnewaddress() + + # fund rbf node with 10 coins of 0.001 btc (100,000 satoshis) + self.log.info("Mining blocks...") + peer_node.generate(110) + self.sync_all() + for i in range(25): + peer_node.sendtoaddress(rbf_node_address, 0.001) + self.sync_all() + peer_node.generate(1) + self.sync_all() + assert_equal(rbf_node.getbalance(), Decimal("0.025")) + + self.log.info("Running tests") + dest_address = peer_node.getnewaddress() + test_simple_bumpfee_succeeds(rbf_node, peer_node, dest_address) + test_segwit_bumpfee_succeeds(rbf_node, dest_address) + test_nonrbf_bumpfee_fails(peer_node, dest_address) + test_notmine_bumpfee_fails(rbf_node, peer_node, dest_address) + test_bumpfee_with_descendant_fails(rbf_node, rbf_node_address, dest_address) + test_small_output_fails(rbf_node, dest_address) + test_dust_to_fee(rbf_node, dest_address) + test_settxfee(rbf_node, dest_address) + test_rebumping(rbf_node, dest_address) + test_rebumping_not_replaceable(rbf_node, dest_address) + test_unconfirmed_not_spendable(rbf_node, rbf_node_address) + test_bumpfee_metadata(rbf_node, dest_address) + test_locked_wallet_fails(rbf_node, dest_address) + self.log.info("Success") + + +def test_simple_bumpfee_succeeds(rbf_node, peer_node, dest_address): + rbfid = spend_one_input(rbf_node, dest_address) + rbftx = rbf_node.gettransaction(rbfid) + sync_mempools((rbf_node, peer_node)) + assert rbfid in rbf_node.getrawmempool() and rbfid in peer_node.getrawmempool() + bumped_tx = rbf_node.bumpfee(rbfid) + assert_equal(bumped_tx["errors"], []) + assert bumped_tx["fee"] - abs(rbftx["fee"]) > 0 + # check that bumped_tx propagates, original tx was evicted and has a wallet conflict + sync_mempools((rbf_node, peer_node)) + assert bumped_tx["txid"] in rbf_node.getrawmempool() + assert bumped_tx["txid"] in peer_node.getrawmempool() + assert rbfid not in rbf_node.getrawmempool() + assert rbfid not in peer_node.getrawmempool() + oldwtx = rbf_node.gettransaction(rbfid) + assert len(oldwtx["walletconflicts"]) > 0 + # check wallet transaction replaces and replaced_by values + bumpedwtx = rbf_node.gettransaction(bumped_tx["txid"]) + assert_equal(oldwtx["replaced_by_txid"], bumped_tx["txid"]) + assert_equal(bumpedwtx["replaces_txid"], rbfid) + + +def test_segwit_bumpfee_succeeds(rbf_node, dest_address): + # Create a transaction with segwit output, then create an RBF transaction + # which spends it, and make sure bumpfee can be called on it. + + segwit_in = next(u for u in rbf_node.listunspent() if u["amount"] == Decimal("0.001")) + segwit_out = rbf_node.validateaddress(rbf_node.getnewaddress()) + rbf_node.addwitnessaddress(segwit_out["address"]) + segwitid = send_to_witness( + use_p2wsh=False, + node=rbf_node, + utxo=segwit_in, + pubkey=segwit_out["pubkey"], + encode_p2sh=False, + amount=Decimal("0.0009"), + sign=True) + + rbfraw = rbf_node.createrawtransaction([{ + 'txid': segwitid, + 'vout': 0, + "sequence": BIP125_SEQUENCE_NUMBER + }], {dest_address: Decimal("0.0005"), + rbf_node.getrawchangeaddress(): Decimal("0.0003")}) + rbfsigned = rbf_node.signrawtransaction(rbfraw) + rbfid = rbf_node.sendrawtransaction(rbfsigned["hex"]) + assert rbfid in rbf_node.getrawmempool() + + bumped_tx = rbf_node.bumpfee(rbfid) + assert bumped_tx["txid"] in rbf_node.getrawmempool() + assert rbfid not in rbf_node.getrawmempool() + + +def test_nonrbf_bumpfee_fails(peer_node, dest_address): + # cannot replace a non RBF transaction (from node which did not enable RBF) + not_rbfid = peer_node.sendtoaddress(dest_address, Decimal("0.00090000")) + assert_raises_rpc_error(-4, "not BIP 125 replaceable", peer_node.bumpfee, not_rbfid) + + +def test_notmine_bumpfee_fails(rbf_node, peer_node, dest_address): + # cannot bump fee unless the tx has only inputs that we own. + # here, the rbftx has a peer_node coin and then adds a rbf_node input + # Note that this test depends upon the RPC code checking input ownership prior to change outputs + # (since it can't use fundrawtransaction, it lacks a proper change output) + utxos = [node.listunspent()[-1] for node in (rbf_node, peer_node)] + inputs = [{ + "txid": utxo["txid"], + "vout": utxo["vout"], + "address": utxo["address"], + "sequence": BIP125_SEQUENCE_NUMBER + } for utxo in utxos] + output_val = sum(utxo["amount"] for utxo in utxos) - Decimal("0.001") + rawtx = rbf_node.createrawtransaction(inputs, {dest_address: output_val}) + signedtx = rbf_node.signrawtransaction(rawtx) + signedtx = peer_node.signrawtransaction(signedtx["hex"]) + rbfid = rbf_node.sendrawtransaction(signedtx["hex"]) + assert_raises_rpc_error(-4, "Transaction contains inputs that don't belong to this wallet", + rbf_node.bumpfee, rbfid) + + +def test_bumpfee_with_descendant_fails(rbf_node, rbf_node_address, dest_address): + # cannot bump fee if the transaction has a descendant + # parent is send-to-self, so we don't have to check which output is change when creating the child tx + parent_id = spend_one_input(rbf_node, rbf_node_address) + tx = rbf_node.createrawtransaction([{"txid": parent_id, "vout": 0}], {dest_address: 0.00020000}) + tx = rbf_node.signrawtransaction(tx) + rbf_node.sendrawtransaction(tx["hex"]) + assert_raises_rpc_error(-8, "Transaction has descendants in the wallet", rbf_node.bumpfee, parent_id) + + +def test_small_output_fails(rbf_node, dest_address): + # cannot bump fee with a too-small output + rbfid = spend_one_input(rbf_node, dest_address) + rbf_node.bumpfee(rbfid, {"totalFee": 50000}) + + rbfid = spend_one_input(rbf_node, dest_address) + assert_raises_rpc_error(-4, "Change output is too small", rbf_node.bumpfee, rbfid, {"totalFee": 50001}) + + +def test_dust_to_fee(rbf_node, dest_address): + # check that if output is reduced to dust, it will be converted to fee + # the bumped tx sets fee=49,900, but it converts to 50,000 + rbfid = spend_one_input(rbf_node, dest_address) + fulltx = rbf_node.getrawtransaction(rbfid, 1) + bumped_tx = rbf_node.bumpfee(rbfid, {"totalFee": 49900}) + full_bumped_tx = rbf_node.getrawtransaction(bumped_tx["txid"], 1) + assert_equal(bumped_tx["fee"], Decimal("0.00050000")) + assert_equal(len(fulltx["vout"]), 2) + assert_equal(len(full_bumped_tx["vout"]), 1) #change output is eliminated + + +def test_settxfee(rbf_node, dest_address): + # check that bumpfee reacts correctly to the use of settxfee (paytxfee) + rbfid = spend_one_input(rbf_node, dest_address) + requested_feerate = Decimal("0.00025000") + rbf_node.settxfee(requested_feerate) + bumped_tx = rbf_node.bumpfee(rbfid) + actual_feerate = bumped_tx["fee"] * 1000 / rbf_node.getrawtransaction(bumped_tx["txid"], True)["vsize"] + # Assert that the difference between the requested feerate and the actual + # feerate of the bumped transaction is small. + assert_greater_than(Decimal("0.00001000"), abs(requested_feerate - actual_feerate)) + rbf_node.settxfee(Decimal("0.00000000")) # unset paytxfee + + +def test_rebumping(rbf_node, dest_address): + # check that re-bumping the original tx fails, but bumping the bumper succeeds + rbfid = spend_one_input(rbf_node, dest_address) + bumped = rbf_node.bumpfee(rbfid, {"totalFee": 2000}) + assert_raises_rpc_error(-4, "already bumped", rbf_node.bumpfee, rbfid, {"totalFee": 3000}) + rbf_node.bumpfee(bumped["txid"], {"totalFee": 3000}) + + +def test_rebumping_not_replaceable(rbf_node, dest_address): + # check that re-bumping a non-replaceable bump tx fails + rbfid = spend_one_input(rbf_node, dest_address) + bumped = rbf_node.bumpfee(rbfid, {"totalFee": 10000, "replaceable": False}) + assert_raises_rpc_error(-4, "Transaction is not BIP 125 replaceable", rbf_node.bumpfee, bumped["txid"], + {"totalFee": 20000}) + + +def test_unconfirmed_not_spendable(rbf_node, rbf_node_address): + # check that unconfirmed outputs from bumped transactions are not spendable + rbfid = spend_one_input(rbf_node, rbf_node_address) + rbftx = rbf_node.gettransaction(rbfid)["hex"] + assert rbfid in rbf_node.getrawmempool() + bumpid = rbf_node.bumpfee(rbfid)["txid"] + assert bumpid in rbf_node.getrawmempool() + assert rbfid not in rbf_node.getrawmempool() + + # check that outputs from the bump transaction are not spendable + # due to the replaces_txid check in CWallet::AvailableCoins + assert_equal([t for t in rbf_node.listunspent(minconf=0, include_unsafe=False) if t["txid"] == bumpid], []) + + # submit a block with the rbf tx to clear the bump tx out of the mempool, + # then call abandon to make sure the wallet doesn't attempt to resubmit the + # bump tx, then invalidate the block so the rbf tx will be put back in the + # mempool. this makes it possible to check whether the rbf tx outputs are + # spendable before the rbf tx is confirmed. + block = submit_block_with_tx(rbf_node, rbftx) + rbf_node.abandontransaction(bumpid) + rbf_node.invalidateblock(block.hash) + assert bumpid not in rbf_node.getrawmempool() + assert rbfid in rbf_node.getrawmempool() + + # check that outputs from the rbf tx are not spendable before the + # transaction is confirmed, due to the replaced_by_txid check in + # CWallet::AvailableCoins + assert_equal([t for t in rbf_node.listunspent(minconf=0, include_unsafe=False) if t["txid"] == rbfid], []) + + # check that the main output from the rbf tx is spendable after confirmed + rbf_node.generate(1) + assert_equal( + sum(1 for t in rbf_node.listunspent(minconf=0, include_unsafe=False) + if t["txid"] == rbfid and t["address"] == rbf_node_address and t["spendable"]), 1) + + +def test_bumpfee_metadata(rbf_node, dest_address): + rbfid = rbf_node.sendtoaddress(dest_address, Decimal("0.00100000"), "comment value", "to value") + bumped_tx = rbf_node.bumpfee(rbfid) + bumped_wtx = rbf_node.gettransaction(bumped_tx["txid"]) + assert_equal(bumped_wtx["comment"], "comment value") + assert_equal(bumped_wtx["to"], "to value") + + +def test_locked_wallet_fails(rbf_node, dest_address): + rbfid = spend_one_input(rbf_node, dest_address) + rbf_node.walletlock() + assert_raises_rpc_error(-13, "Please enter the wallet passphrase with walletpassphrase first.", + rbf_node.bumpfee, rbfid) + + +def spend_one_input(node, dest_address): + tx_input = dict( + sequence=BIP125_SEQUENCE_NUMBER, **next(u for u in node.listunspent() if u["amount"] == Decimal("0.00100000"))) + rawtx = node.createrawtransaction( + [tx_input], {dest_address: Decimal("0.00050000"), + node.getrawchangeaddress(): Decimal("0.00049000")}) + signedtx = node.signrawtransaction(rawtx) + txid = node.sendrawtransaction(signedtx["hex"]) + return txid + + +def submit_block_with_tx(node, tx): + ctx = CTransaction() + ctx.deserialize(io.BytesIO(hex_str_to_bytes(tx))) + + tip = node.getbestblockhash() + height = node.getblockcount() + 1 + block_time = node.getblockheader(tip)["mediantime"] + 1 + block = blocktools.create_block(int(tip, 16), blocktools.create_coinbase(height), block_time) + block.vtx.append(ctx) + block.rehash() + block.hashMerkleRoot = block.calc_merkle_root() + blocktools.add_witness_commitment(block) + block.solve() + node.submitblock(bytes_to_hex_str(block.serialize(True))) + return block + + +if __name__ == "__main__": + BumpFeeTest().main() |