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91d93aac4e3fe6fff5ef492ed152c4d8fa6f2672 validation: remove nchaintx from assumeutxo metadata (James O'Beirne) 931684b24a89aba884cb18c13fa67ccca339ee8c validation: fix ActivateSnapshot to use hardcoded nChainTx (James O'Beirne) Pull request description: This fixes an oversight from the move of nChainTx from the user-supplied snapshot metadata into the hardcoded assumeutxo chainparams. Since the nChainTx is now unused in the metadata, it should be removed in a future commit. See: https://github.com/bitcoin/bitcoin/pull/19806#discussion_r612165410 ACKs for top commit: Sjors: utACK 91d93aac4e3fe6fff5ef492ed152c4d8fa6f2672 ryanofsky: Code review ACK 91d93aac4e3fe6fff5ef492ed152c4d8fa6f2672. No change to previous commit, just new commit removing now unused utxo snapshot field and updating tests. Tree-SHA512: 445bdd738faf007451f40bbcf360dd1fb4675e17a4c96546e6818c12e33dd336dadd95cf8d4b5f8df1d6ccfbc4bf5496864bb5528e416cea894857b6b732140c
54 lines
2.0 KiB
Python
Executable File
54 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2019-2020 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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node.generate(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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'0266fa3cd96867c40f2f3056da3b66daf8fb4c83ec4f3f5344fd3fe9755794b5')
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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, '32f1d4b7f643c97e88c540f431e8277fdd9332c3dea260b046c93787745e35b0')
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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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