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bitcoin/test/functional/feature_remove_pruned_files...

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#!/usr/bin/env python3
# Copyright (c) 2022 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test removing undeleted pruned blk files on startup."""
import os
from test_framework.test_framework import BitcoinTestFramework
class FeatureRemovePrunedFilesOnStartupTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.extra_args = [["-fastprune", "-prune=1"]]
def mine_batches(self, blocks):
n = blocks // 250
for _ in range(n):
self.generate(self.nodes[0], 250)
self.generate(self.nodes[0], blocks % 250)
self.sync_blocks()
def run_test(self):
blk0 = os.path.join(self.nodes[0].datadir, self.nodes[0].chain, 'blocks', 'blk00000.dat')
rev0 = os.path.join(self.nodes[0].datadir, self.nodes[0].chain, 'blocks', 'rev00000.dat')
blk1 = os.path.join(self.nodes[0].datadir, self.nodes[0].chain, 'blocks', 'blk00001.dat')
rev1 = os.path.join(self.nodes[0].datadir, self.nodes[0].chain, 'blocks', 'rev00001.dat')
self.mine_batches(800)
fo1 = os.open(blk0, os.O_RDONLY)
fo2 = os.open(rev1, os.O_RDONLY)
fd1 = os.fdopen(fo1)
fd2 = os.fdopen(fo2)
self.nodes[0].pruneblockchain(600)
# Windows systems will not remove files with an open fd
if os.name != 'nt':
assert not os.path.exists(blk0)
assert not os.path.exists(rev0)
assert not os.path.exists(blk1)
assert not os.path.exists(rev1)
else:
assert os.path.exists(blk0)
assert not os.path.exists(rev0)
assert not os.path.exists(blk1)
assert os.path.exists(rev1)
# Check that the files are removed on restart once the fds are closed
fd1.close()
fd2.close()
self.restart_node(0)
assert not os.path.exists(blk0)
assert not os.path.exists(rev1)
if __name__ == '__main__':
FeatureRemovePrunedFilesOnStartupTest().main()