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#!/usr/bin/env python3
# Copyright (c) 2020 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 blockfilterindex in conjunction with prune."""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
assert_greater_than,
assert_raises_rpc_error,
)
class FeatureBlockfilterindexPruneTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.extra_args = [["-fastprune", "-prune=1", "-blockfilterindex=1"]]
def sync_index(self, height):
expected = {'basic block filter index': {'synced': True, 'best_block_height': height}}
self.wait_until(lambda: self.nodes[0].getindexinfo() == expected)
def run_test(self):
self.log.info("check if we can access a blockfilter when pruning is enabled but no blocks are actually pruned")
self.sync_index(height=200)
assert_greater_than(len(self.nodes[0].getblockfilter(self.nodes[0].getbestblockhash())['filter']), 0)
# Mine two batches of blocks to avoid hitting NODE_NETWORK_LIMITED_MIN_BLOCKS disconnection
self.nodes[0].generate(250)
self.sync_all()
self.nodes[0].generate(250)
self.sync_all()
self.sync_index(height=700)
self.log.info("prune some blocks")
pruneheight = self.nodes[0].pruneblockchain(400)
assert_equal(pruneheight, 248)
self.log.info("check if we can access the tips blockfilter when we have pruned some blocks")
assert_greater_than(len(self.nodes[0].getblockfilter(self.nodes[0].getbestblockhash())['filter']), 0)
self.log.info("check if we can access the blockfilter of a pruned block")
assert_greater_than(len(self.nodes[0].getblockfilter(self.nodes[0].getblockhash(2))['filter']), 0)
self.log.info("start node without blockfilterindex")
self.restart_node(0, extra_args=["-fastprune", "-prune=1"])
self.log.info("make sure accessing the blockfilters throws an error")
assert_raises_rpc_error(-1, "Index is not enabled for filtertype basic", self.nodes[0].getblockfilter, self.nodes[0].getblockhash(2))
self.nodes[0].generate(1000)
self.log.info("prune below the blockfilterindexes best block while blockfilters are disabled")
pruneheight_new = self.nodes[0].pruneblockchain(1000)
assert_greater_than(pruneheight_new, pruneheight)
self.stop_node(0)
self.log.info("make sure we get an init error when starting the node again with block filters")
self.nodes[0].assert_start_raises_init_error(
extra_args=["-fastprune", "-prune=1", "-blockfilterindex=1"],
expected_msg="Error: basic block filter index best block of the index goes beyond pruned data. Please disable the index or reindex (which will download the whole blockchain again)",
)
self.log.info("make sure the node starts again with the -reindex arg")
self.start_node(0, extra_args=["-fastprune", "-prune=1", "-blockfilterindex", "-reindex"])
if __name__ == '__main__':
FeatureBlockfilterindexPruneTest().main()
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