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81 lines
3.0 KiB
81 lines
3.0 KiB
3 years ago
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#!/usr/bin/env python3
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# Copyright (c) 2020-2021 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 UTXO set hash value calculation in gettxoutsetinfo."""
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import struct
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from test_framework.messages import (
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CBlock,
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COutPoint,
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from_hex,
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)
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from test_framework.muhash import MuHash3072
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal
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from test_framework.wallet import MiniWallet
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class UTXOSetHashTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.setup_clean_chain = True
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def test_muhash_implementation(self):
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self.log.info("Test MuHash implementation consistency")
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node = self.nodes[0]
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wallet = MiniWallet(node)
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mocktime = node.getblockheader(node.getblockhash(0))['time'] + 1
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node.setmocktime(mocktime)
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# Generate 100 blocks and remove the first since we plan to spend its
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# coinbase
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block_hashes = wallet.generate(1) + node.generate(99)
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blocks = list(map(lambda block: from_hex(CBlock(), node.getblock(block, False)), block_hashes))
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blocks.pop(0)
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# Create a spending transaction and mine a block which includes it
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txid = wallet.send_self_transfer(from_node=node)['txid']
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tx_block = node.generateblock(output=wallet.get_address(), transactions=[txid])
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blocks.append(from_hex(CBlock(), node.getblock(tx_block['hash'], False)))
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# Serialize the outputs that should be in the UTXO set and add them to
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# a MuHash object
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muhash = MuHash3072()
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for height, block in enumerate(blocks):
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# The Genesis block coinbase is not part of the UTXO set and we
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# spent the first mined block
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height += 2
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for tx in block.vtx:
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for n, tx_out in enumerate(tx.vout):
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coinbase = 1 if not tx.vin[0].prevout.hash else 0
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# Skip witness commitment
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if (coinbase and n > 0):
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continue
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data = COutPoint(int(tx.rehash(), 16), n).serialize()
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data += struct.pack("<i", height * 2 + coinbase)
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data += tx_out.serialize()
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muhash.insert(data)
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finalized = muhash.digest()
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node_muhash = node.gettxoutsetinfo("muhash")['muhash']
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assert_equal(finalized[::-1].hex(), node_muhash)
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self.log.info("Test deterministic UTXO set hash results")
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assert_equal(node.gettxoutsetinfo()['hash_serialized_2'], "5b1b44097406226c0eb8e1362cd17a1f346522cf9390a8175a57a5262cb1963f")
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assert_equal(node.gettxoutsetinfo("muhash")['muhash'], "4b8803075d7151d06fad3e88b68ba726886794873fbfa841d12aefb2cc2b881b")
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def run_test(self):
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self.test_muhash_implementation()
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if __name__ == '__main__':
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UTXOSetHashTest().main()
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