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6acda4b00b
ffd09281ferpc: various fixups for dumptxoutset (James O'Beirne) Pull request description: This is part of the [assumeutxo project](https://github.com/bitcoin/bitcoin/projects/11) (parent PR: #15606) --- A few fixes to make this RPC actually useful when generating snapshots. - Generate an assumeutxo hash and display it (sort of a bugfix) - Add nchaintx to output (necessary for use in chainparams entry) - Add path of serialized UTXO file to output ACKs for top commit: laanwj: Code review ACKffd09281feTree-SHA512: b0b5fd5138dea0e21258b1b18ab75bf3fd1628522cc1dbafa81af9cb9fa96562a1c39124fdb31057f256bfc560f462f907e9fe5e209b577b3f57afae2b7be826
58 lines
2.1 KiB
Python
Executable File
58 lines
2.1 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2019-2021 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 the generation of UTXO snapshots using `dumptxoutset`.
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"""
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from test_framework.blocktools import COINBASE_MATURITY
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal, assert_raises_rpc_error
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import hashlib
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from pathlib import Path
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class DumptxoutsetTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 1
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def run_test(self):
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"""Test a trivial usage of the dumptxoutset RPC command."""
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node = self.nodes[0]
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mocktime = node.getblockheader(node.getblockhash(0))['time'] + 1
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node.setmocktime(mocktime)
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self.generate(node, COINBASE_MATURITY)
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FILENAME = 'txoutset.dat'
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out = node.dumptxoutset(FILENAME)
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expected_path = Path(node.datadir) / self.chain / FILENAME
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assert expected_path.is_file()
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assert_equal(out['coins_written'], 100)
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assert_equal(out['base_height'], 100)
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assert_equal(out['path'], str(expected_path))
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# Blockhash should be deterministic based on mocked time.
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assert_equal(
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out['base_hash'],
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'6fd417acba2a8738b06fee43330c50d58e6a725046c3d843c8dd7e51d46d1ed6')
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with open(str(expected_path), 'rb') as f:
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digest = hashlib.sha256(f.read()).hexdigest()
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# UTXO snapshot hash should be deterministic based on mocked time.
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assert_equal(
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digest, '7ae82c986fa5445678d2a21453bb1c86d39e47af13da137640c2b1cf8093691c')
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assert_equal(
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out['txoutset_hash'], 'd4b614f476b99a6e569973bf1c0120d88b1a168076f8ce25691fb41dd1cef149')
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assert_equal(out['nchaintx'], 101)
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# Specifying a path to an existing file will fail.
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assert_raises_rpc_error(
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-8, '{} already exists'.format(FILENAME), node.dumptxoutset, FILENAME)
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if __name__ == '__main__':
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DumptxoutsetTest().main()
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