285 lines
9.6 KiB
Python
Executable file
285 lines
9.6 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2017-2018 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 listsincelast RPC."""
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal, assert_array_result, assert_raises_rpc_error
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from decimal import Decimal
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class ListSinceBlockTest (BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 4
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self.setup_clean_chain = True
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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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self.nodes[2].generate(101)
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self.sync_all()
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self.test_no_blockhash()
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self.test_invalid_blockhash()
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self.test_reorg()
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self.test_double_spend()
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self.test_double_send()
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def test_no_blockhash(self):
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txid = self.nodes[2].sendtoaddress(self.nodes[0].getnewaddress(), 0.02)
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blockhash, = self.nodes[2].generate(1)
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self.sync_all()
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txs = self.nodes[0].listtransactions()
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assert_array_result(txs, {"txid": txid}, {
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"category": "receive",
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"amount": Decimal("0.02"),
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"blockhash": blockhash,
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"confirmations": 1,
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})
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assert_equal(
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self.nodes[0].listsinceblock(),
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{"lastblock": blockhash,
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"removed": [],
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"transactions": txs})
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assert_equal(
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self.nodes[0].listsinceblock(""),
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{"lastblock": blockhash,
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"removed": [],
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"transactions": txs})
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def test_invalid_blockhash(self):
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assert_raises_rpc_error(-5, "Block not found", self.nodes[0].listsinceblock,
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"42759cde25462784395a337460bde75f58e73d3f08bd31fdc3507cbac856a2c4")
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assert_raises_rpc_error(-5, "Block not found", self.nodes[0].listsinceblock,
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"0000000000000000000000000000000000000000000000000000000000000000")
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assert_raises_rpc_error(-5, "Block not found", self.nodes[0].listsinceblock,
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"invalid-hex")
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def test_reorg(self):
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'''
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`listsinceblock` did not behave correctly when handed a block that was
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no longer in the main chain:
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ab0
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/ \
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aa1 [tx0] bb1
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aa2 bb2
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aa3 bb3
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bb4
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Consider a client that has only seen block `aa3` above. It asks the node
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to `listsinceblock aa3`. But at some point prior the main chain switched
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to the bb chain.
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Previously: listsinceblock would find height=4 for block aa3 and compare
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this to height=5 for the tip of the chain (bb4). It would then return
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results restricted to bb3-bb4.
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Now: listsinceblock finds the fork at ab0 and returns results in the
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range bb1-bb4.
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This test only checks that [tx0] is present.
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'''
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# Split network into two
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self.split_network()
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# send to nodes[0] from nodes[2]
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senttx = self.nodes[2].sendtoaddress(self.nodes[0].getnewaddress(), 0.02)
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# generate on both sides
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lastblockhash = self.nodes[1].generate(6)[5]
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self.nodes[2].generate(7)
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self.log.info('lastblockhash=%s' % (lastblockhash))
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self.sync_all([self.nodes[:2], self.nodes[2:]])
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self.join_network()
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# listsinceblock(lastblockhash) should now include tx, as seen from nodes[0]
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lsbres = self.nodes[0].listsinceblock(lastblockhash)
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found = False
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for tx in lsbres['transactions']:
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if tx['txid'] == senttx:
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found = True
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break
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assert found
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def test_double_spend(self):
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'''
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This tests the case where the same UTXO is spent twice on two separate
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blocks as part of a reorg.
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ab0
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/ \
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aa1 [tx1] bb1 [tx2]
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aa2 bb2
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aa3 bb3
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bb4
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Problematic case:
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1. User 1 receives BTC in tx1 from utxo1 in block aa1.
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2. User 2 receives BTC in tx2 from utxo1 (same) in block bb1
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3. User 1 sees 2 confirmations at block aa3.
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4. Reorg into bb chain.
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5. User 1 asks `listsinceblock aa3` and does not see that tx1 is now
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invalidated.
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Currently the solution to this is to detect that a reorg'd block is
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asked for in listsinceblock, and to iterate back over existing blocks up
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until the fork point, and to include all transactions that relate to the
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node wallet.
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'''
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self.sync_all()
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# Split network into two
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self.split_network()
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# share utxo between nodes[1] and nodes[2]
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utxos = self.nodes[2].listunspent()
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utxo = utxos[0]
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privkey = self.nodes[2].dumpprivkey(utxo['address'])
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self.nodes[1].importprivkey(privkey)
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# send from nodes[1] using utxo to nodes[0]
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change = '%.8f' % (float(utxo['amount']) - 0.020006)
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recipient_dict = {
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self.nodes[0].getnewaddress(): Decimal("0.02"),
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self.nodes[1].getnewaddress(): change,
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}
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utxo_dicts = [{
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'txid': utxo['txid'],
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'vout': utxo['vout'],
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}]
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txid1 = self.nodes[1].sendrawtransaction(
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self.nodes[1].signrawtransactionwithwallet(
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self.nodes[1].createrawtransaction(utxo_dicts, recipient_dict))['hex'])
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# send from nodes[2] using utxo to nodes[3]
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recipient_dict2 = {
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self.nodes[3].getnewaddress(): Decimal("0.02"),
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self.nodes[2].getnewaddress(): change,
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}
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self.nodes[2].sendrawtransaction(
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self.nodes[2].signrawtransactionwithwallet(
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self.nodes[2].createrawtransaction(utxo_dicts, recipient_dict2))['hex'])
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# generate on both sides
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lastblockhash = self.nodes[1].generate(3)[2]
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self.nodes[2].generate(4)
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self.join_network()
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self.sync_all()
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# gettransaction should work for txid1
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assert self.nodes[0].gettransaction(txid1)['txid'] == txid1, "gettransaction failed to find txid1"
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# listsinceblock(lastblockhash) should now include txid1, as seen from nodes[0]
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lsbres = self.nodes[0].listsinceblock(lastblockhash)
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assert any(tx['txid'] == txid1 for tx in lsbres['removed'])
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# but it should not include 'removed' if include_removed=false
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lsbres2 = self.nodes[0].listsinceblock(blockhash=lastblockhash, include_removed=False)
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assert 'removed' not in lsbres2
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def test_double_send(self):
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'''
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This tests the case where the same transaction is submitted twice on two
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separate blocks as part of a reorg. The former will vanish and the
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latter will appear as the true transaction (with confirmations dropping
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as a result).
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ab0
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/ \
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aa1 [tx1] bb1
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aa2 bb2
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aa3 bb3 [tx1]
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bb4
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Asserted:
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1. tx1 is listed in listsinceblock.
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2. It is included in 'removed' as it was removed, even though it is now
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present in a different block.
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3. It is listed with a confirmation count of 2 (bb3, bb4), not
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3 (aa1, aa2, aa3).
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'''
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self.sync_all()
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# Split network into two
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self.split_network()
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# create and sign a transaction
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utxos = self.nodes[2].listunspent()
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utxo = utxos[0]
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change = '%.8f' % (float(utxo['amount']) - 0.020006)
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recipient_dict = {
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self.nodes[0].getnewaddress(): Decimal("0.02"),
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self.nodes[2].getnewaddress(): change,
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}
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utxo_dicts = [{
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'txid': utxo['txid'],
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'vout': utxo['vout'],
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}]
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signedtxres = self.nodes[2].signrawtransactionwithwallet(
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self.nodes[2].createrawtransaction(utxo_dicts, recipient_dict))
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assert signedtxres['complete']
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signedtx = signedtxres['hex']
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# send from nodes[1]; this will end up in aa1
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txid1 = self.nodes[1].sendrawtransaction(signedtx)
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# generate bb1-bb2 on right side
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self.nodes[2].generate(2)
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# send from nodes[2]; this will end up in bb3
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txid2 = self.nodes[2].sendrawtransaction(signedtx)
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assert_equal(txid1, txid2)
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# generate on both sides
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lastblockhash = self.nodes[1].generate(3)[2]
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self.nodes[2].generate(2)
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self.join_network()
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self.sync_all()
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# gettransaction should work for txid1
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self.nodes[0].gettransaction(txid1)
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# listsinceblock(lastblockhash) should now include txid1 in transactions
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# as well as in removed
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lsbres = self.nodes[0].listsinceblock(lastblockhash)
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assert any(tx['txid'] == txid1 for tx in lsbres['transactions'])
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assert any(tx['txid'] == txid1 for tx in lsbres['removed'])
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# find transaction and ensure confirmations is valid
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for tx in lsbres['transactions']:
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if tx['txid'] == txid1:
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assert_equal(tx['confirmations'], 2)
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# the same check for the removed array; confirmations should STILL be 2
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for tx in lsbres['removed']:
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if tx['txid'] == txid1:
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assert_equal(tx['confirmations'], 2)
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if __name__ == '__main__':
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ListSinceBlockTest().main()
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