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302 lines
13 KiB
302 lines
13 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2016-2017 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 the bumpfee RPC. |
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Verifies that the bumpfee RPC creates replacement transactions successfully when |
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its preconditions are met, and returns appropriate errors in other cases. |
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This module consists of around a dozen individual test cases implemented in the |
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top-level functions named as test_<test_case_description>. The test functions |
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can be disabled or reordered if needed for debugging. If new test cases are |
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added in the future, they should try to follow the same convention and not |
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make assumptions about execution order. |
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""" |
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from test_framework.blocktools import send_to_witness |
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from test_framework.test_framework import BitcoinTestFramework, SkipTest |
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from test_framework import blocktools |
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from test_framework.mininode import CTransaction |
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from test_framework.util import * |
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import io |
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# Sequence number that is BIP 125 opt-in and BIP 68-compliant |
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BIP125_SEQUENCE_NUMBER = 0xfffffffd |
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WALLET_PASSPHRASE = "test" |
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WALLET_PASSPHRASE_TIMEOUT = 3600 |
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class BumpFeeTest(BitcoinTestFramework): |
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def set_test_params(self): |
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self.num_nodes = 2 |
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self.setup_clean_chain = True |
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self.extra_args = [["-prematurewitness", "-walletprematurewitness", "-deprecatedrpc=addwitnessaddress", "-walletrbf={}".format(i)] |
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for i in range(self.num_nodes)] |
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def run_test(self): |
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raise SkipTest("Kevacoin doesn't support RBF.") |
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# Encrypt wallet for test_locked_wallet_fails test |
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self.nodes[1].node_encrypt_wallet(WALLET_PASSPHRASE) |
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self.start_node(1) |
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self.nodes[1].walletpassphrase(WALLET_PASSPHRASE, WALLET_PASSPHRASE_TIMEOUT) |
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connect_nodes_bi(self.nodes, 0, 1) |
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self.sync_all() |
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peer_node, rbf_node = self.nodes |
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rbf_node_address = rbf_node.getnewaddress() |
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# fund rbf node with 10 coins of 0.1 ltc (10,000,000 satoshis) |
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self.log.info("Mining blocks...") |
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peer_node.generate(110) |
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self.sync_all() |
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for i in range(25): |
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peer_node.sendtoaddress(rbf_node_address, 0.1) |
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self.sync_all() |
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peer_node.generate(1) |
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self.sync_all() |
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assert_equal(rbf_node.getbalance(), Decimal("2.5")) |
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self.log.info("Running tests") |
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dest_address = peer_node.getnewaddress() |
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test_simple_bumpfee_succeeds(rbf_node, peer_node, dest_address) |
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test_segwit_bumpfee_succeeds(rbf_node, dest_address) |
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test_nonrbf_bumpfee_fails(peer_node, dest_address) |
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test_notmine_bumpfee_fails(rbf_node, peer_node, dest_address) |
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test_bumpfee_with_descendant_fails(rbf_node, rbf_node_address, dest_address) |
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test_small_output_fails(rbf_node, dest_address) |
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test_dust_to_fee(rbf_node, dest_address) |
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test_settxfee(rbf_node, dest_address) |
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test_rebumping(rbf_node, dest_address) |
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test_rebumping_not_replaceable(rbf_node, dest_address) |
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test_unconfirmed_not_spendable(rbf_node, rbf_node_address) |
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test_bumpfee_metadata(rbf_node, dest_address) |
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test_locked_wallet_fails(rbf_node, dest_address) |
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self.log.info("Success") |
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def test_simple_bumpfee_succeeds(rbf_node, peer_node, dest_address): |
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rbfid = spend_one_input(rbf_node, dest_address) |
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rbftx = rbf_node.gettransaction(rbfid) |
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sync_mempools((rbf_node, peer_node)) |
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assert rbfid in rbf_node.getrawmempool() and rbfid in peer_node.getrawmempool() |
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bumped_tx = rbf_node.bumpfee(rbfid) |
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assert_equal(bumped_tx["errors"], []) |
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assert bumped_tx["fee"] - abs(rbftx["fee"]) > 0 |
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# check that bumped_tx propagates, original tx was evicted and has a wallet conflict |
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sync_mempools((rbf_node, peer_node)) |
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assert bumped_tx["txid"] in rbf_node.getrawmempool() |
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assert bumped_tx["txid"] in peer_node.getrawmempool() |
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assert rbfid not in rbf_node.getrawmempool() |
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assert rbfid not in peer_node.getrawmempool() |
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oldwtx = rbf_node.gettransaction(rbfid) |
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assert len(oldwtx["walletconflicts"]) > 0 |
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# check wallet transaction replaces and replaced_by values |
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bumpedwtx = rbf_node.gettransaction(bumped_tx["txid"]) |
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assert_equal(oldwtx["replaced_by_txid"], bumped_tx["txid"]) |
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assert_equal(bumpedwtx["replaces_txid"], rbfid) |
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def test_segwit_bumpfee_succeeds(rbf_node, dest_address): |
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# Create a transaction with segwit output, then create an RBF transaction |
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# which spends it, and make sure bumpfee can be called on it. |
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segwit_in = next(u for u in rbf_node.listunspent() if u["amount"] == Decimal("0.1")) |
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segwit_out = rbf_node.validateaddress(rbf_node.getnewaddress()) |
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rbf_node.addwitnessaddress(segwit_out["address"]) |
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segwitid = send_to_witness( |
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use_p2wsh=False, |
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node=rbf_node, |
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utxo=segwit_in, |
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pubkey=segwit_out["pubkey"], |
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encode_p2sh=False, |
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amount=Decimal("0.09"), |
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sign=True) |
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rbfraw = rbf_node.createrawtransaction([{ |
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'txid': segwitid, |
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'vout': 0, |
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"sequence": BIP125_SEQUENCE_NUMBER |
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}], {dest_address: Decimal("0.05"), |
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rbf_node.getrawchangeaddress(): Decimal("0.03")}) |
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rbfsigned = rbf_node.signrawtransaction(rbfraw) |
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rbfid = rbf_node.sendrawtransaction(rbfsigned["hex"]) |
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assert rbfid in rbf_node.getrawmempool() |
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bumped_tx = rbf_node.bumpfee(rbfid) |
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assert bumped_tx["txid"] in rbf_node.getrawmempool() |
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assert rbfid not in rbf_node.getrawmempool() |
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def test_nonrbf_bumpfee_fails(peer_node, dest_address): |
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# cannot replace a non RBF transaction (from node which did not enable RBF) |
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not_rbfid = peer_node.sendtoaddress(dest_address, Decimal("0.090000")) |
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assert_raises_rpc_error(-4, "not BIP 125 replaceable", peer_node.bumpfee, not_rbfid) |
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def test_notmine_bumpfee_fails(rbf_node, peer_node, dest_address): |
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# cannot bump fee unless the tx has only inputs that we own. |
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# here, the rbftx has a peer_node coin and then adds a rbf_node input |
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# Note that this test depends upon the RPC code checking input ownership prior to change outputs |
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# (since it can't use fundrawtransaction, it lacks a proper change output) |
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utxos = [node.listunspent()[-1] for node in (rbf_node, peer_node)] |
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inputs = [{ |
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"txid": utxo["txid"], |
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"vout": utxo["vout"], |
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"address": utxo["address"], |
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"sequence": BIP125_SEQUENCE_NUMBER |
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} for utxo in utxos] |
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output_val = sum(utxo["amount"] for utxo in utxos) - Decimal("0.1") |
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rawtx = rbf_node.createrawtransaction(inputs, {dest_address: output_val}) |
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signedtx = rbf_node.signrawtransaction(rawtx) |
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signedtx = peer_node.signrawtransaction(signedtx["hex"]) |
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rbfid = rbf_node.sendrawtransaction(signedtx["hex"]) |
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assert_raises_rpc_error(-4, "Transaction contains inputs that don't belong to this wallet", |
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rbf_node.bumpfee, rbfid) |
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def test_bumpfee_with_descendant_fails(rbf_node, rbf_node_address, dest_address): |
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# cannot bump fee if the transaction has a descendant |
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# parent is send-to-self, so we don't have to check which output is change when creating the child tx |
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parent_id = spend_one_input(rbf_node, rbf_node_address) |
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tx = rbf_node.createrawtransaction([{"txid": parent_id, "vout": 0}], {dest_address: 0.020000}) |
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tx = rbf_node.signrawtransaction(tx) |
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rbf_node.sendrawtransaction(tx["hex"]) |
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assert_raises_rpc_error(-8, "Transaction has descendants in the wallet", rbf_node.bumpfee, parent_id) |
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def test_small_output_fails(rbf_node, dest_address): |
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# cannot bump fee with a too-small output |
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rbfid = spend_one_input(rbf_node, dest_address) |
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rbf_node.bumpfee(rbfid, {"totalFee": 50000}) |
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rbfid = spend_one_input(rbf_node, dest_address) |
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assert_raises_rpc_error(-4, "Change output is too small", rbf_node.bumpfee, rbfid, {"totalFee": 50001}) |
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def test_dust_to_fee(rbf_node, dest_address): |
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# check that if output is reduced to dust, it will be converted to fee |
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# the bumped tx sets fee=49,900, but it converts to 50,000 |
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rbfid = spend_one_input(rbf_node, dest_address) |
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fulltx = rbf_node.getrawtransaction(rbfid, 1) |
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bumped_tx = rbf_node.bumpfee(rbfid, {"totalFee": 4990000}) |
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full_bumped_tx = rbf_node.getrawtransaction(bumped_tx["txid"], 1) |
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assert_equal(bumped_tx["fee"], Decimal("0.050000")) |
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assert_equal(len(fulltx["vout"]), 2) |
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assert_equal(len(full_bumped_tx["vout"]), 1) #change output is eliminated |
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def test_settxfee(rbf_node, dest_address): |
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# check that bumpfee reacts correctly to the use of settxfee (paytxfee) |
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rbfid = spend_one_input(rbf_node, dest_address) |
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requested_feerate = Decimal("0.025000") |
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rbf_node.settxfee(requested_feerate) |
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bumped_tx = rbf_node.bumpfee(rbfid) |
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actual_feerate = bumped_tx["fee"] * 1000 / rbf_node.getrawtransaction(bumped_tx["txid"], True)["vsize"] |
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# Assert that the difference between the requested feerate and the actual |
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# feerate of the bumped transaction is small. |
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assert_greater_than(Decimal("0.00001000"), abs(requested_feerate - actual_feerate)) |
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rbf_node.settxfee(Decimal("0.00000000")) # unset paytxfee |
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def test_rebumping(rbf_node, dest_address): |
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# check that re-bumping the original tx fails, but bumping the bumper succeeds |
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rbfid = spend_one_input(rbf_node, dest_address) |
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bumped = rbf_node.bumpfee(rbfid, {"totalFee": 2000}) |
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assert_raises_rpc_error(-4, "already bumped", rbf_node.bumpfee, rbfid, {"totalFee": 3000}) |
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rbf_node.bumpfee(bumped["txid"], {"totalFee": 3000}) |
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def test_rebumping_not_replaceable(rbf_node, dest_address): |
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# check that re-bumping a non-replaceable bump tx fails |
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rbfid = spend_one_input(rbf_node, dest_address) |
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bumped = rbf_node.bumpfee(rbfid, {"totalFee": 10000, "replaceable": False}) |
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assert_raises_rpc_error(-4, "Transaction is not BIP 125 replaceable", rbf_node.bumpfee, bumped["txid"], |
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{"totalFee": 200000}) |
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def test_unconfirmed_not_spendable(rbf_node, rbf_node_address): |
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# check that unconfirmed outputs from bumped transactions are not spendable |
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rbfid = spend_one_input(rbf_node, rbf_node_address) |
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rbftx = rbf_node.gettransaction(rbfid)["hex"] |
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assert rbfid in rbf_node.getrawmempool() |
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bumpid = rbf_node.bumpfee(rbfid)["txid"] |
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assert bumpid in rbf_node.getrawmempool() |
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assert rbfid not in rbf_node.getrawmempool() |
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# check that outputs from the bump transaction are not spendable |
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# due to the replaces_txid check in CWallet::AvailableCoins |
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assert_equal([t for t in rbf_node.listunspent(minconf=0, include_unsafe=False) if t["txid"] == bumpid], []) |
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# submit a block with the rbf tx to clear the bump tx out of the mempool, |
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# then call abandon to make sure the wallet doesn't attempt to resubmit the |
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# bump tx, then invalidate the block so the rbf tx will be put back in the |
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# mempool. this makes it possible to check whether the rbf tx outputs are |
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# spendable before the rbf tx is confirmed. |
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block = submit_block_with_tx(rbf_node, rbftx) |
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rbf_node.abandontransaction(bumpid) |
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rbf_node.invalidateblock(block.hash) |
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assert bumpid not in rbf_node.getrawmempool() |
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assert rbfid in rbf_node.getrawmempool() |
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# check that outputs from the rbf tx are not spendable before the |
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# transaction is confirmed, due to the replaced_by_txid check in |
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# CWallet::AvailableCoins |
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assert_equal([t for t in rbf_node.listunspent(minconf=0, include_unsafe=False) if t["txid"] == rbfid], []) |
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# check that the main output from the rbf tx is spendable after confirmed |
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rbf_node.generate(1) |
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assert_equal( |
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sum(1 for t in rbf_node.listunspent(minconf=0, include_unsafe=False) |
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if t["txid"] == rbfid and t["address"] == rbf_node_address and t["spendable"]), 1) |
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def test_bumpfee_metadata(rbf_node, dest_address): |
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rbfid = rbf_node.sendtoaddress(dest_address, Decimal("0.100000"), "comment value", "to value") |
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bumped_tx = rbf_node.bumpfee(rbfid) |
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bumped_wtx = rbf_node.gettransaction(bumped_tx["txid"]) |
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assert_equal(bumped_wtx["comment"], "comment value") |
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assert_equal(bumped_wtx["to"], "to value") |
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def test_locked_wallet_fails(rbf_node, dest_address): |
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rbfid = spend_one_input(rbf_node, dest_address) |
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rbf_node.walletlock() |
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assert_raises_rpc_error(-13, "Please enter the wallet passphrase with walletpassphrase first.", |
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rbf_node.bumpfee, rbfid) |
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def spend_one_input(node, dest_address): |
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tx_input = dict( |
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sequence=BIP125_SEQUENCE_NUMBER, **next(u for u in node.listunspent() if u["amount"] == Decimal("0.00100000"))) |
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rawtx = node.createrawtransaction( |
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[tx_input], {dest_address: Decimal("0.00050000"), |
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node.getrawchangeaddress(): Decimal("0.00049000")}) |
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signedtx = node.signrawtransaction(rawtx) |
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txid = node.sendrawtransaction(signedtx["hex"]) |
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return txid |
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def submit_block_with_tx(node, tx): |
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ctx = CTransaction() |
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ctx.deserialize(io.BytesIO(hex_str_to_bytes(tx))) |
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tip = node.getbestblockhash() |
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height = node.getblockcount() + 1 |
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block_time = node.getblockheader(tip)["mediantime"] + 1 |
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block = blocktools.create_block(int(tip, 16), blocktools.create_coinbase(height), block_time) |
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block.vtx.append(ctx) |
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block.rehash() |
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block.hashMerkleRoot = block.calc_merkle_root() |
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blocktools.add_witness_commitment(block) |
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block.solve() |
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node.submitblock(bytes_to_hex_str(block.serialize(True))) |
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return block |
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if __name__ == "__main__": |
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BumpFeeTest().main()
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