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91d93aac4e
This value is no longer used and is instead specified statically in chainparams. This change means that previously generated snapshots will no longer be usable.
51 lines
1.9 KiB
Python
Executable file
51 lines
1.9 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.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(100)
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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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# 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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