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test: check that loading snapshot not matching AssumeUTXO parameters fails

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This commit is contained in:
Sebastian Falbesoner 2023-10-10 09:28:22 +02:00
parent 04265ba937
commit 2e31250027
1 changed files with 26 additions and 1 deletions
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27
test/functional/feature_assumeutxo.py
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@ -36,7 +36,11 @@ Interesting starting states could be loading a snapshot when the current chain t
"""
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
from test_framework.util import (
assert_equal,
assert_raises_rpc_error,
)
START_HEIGHT = 199
SNAPSHOT_BASE_HEIGHT = 299
@ -62,6 +66,25 @@ class AssumeutxoTest(BitcoinTestFramework):
self.add_nodes(3)
self.start_nodes(extra_args=self.extra_args)
def test_invalid_snapshot_scenarios(self, valid_snapshot_path):
self.log.info("Test different scenarios of loading invalid snapshot files")
self.log.info(" - snapshot file refering to a block that is not in the assumeutxo parameters")
with open(valid_snapshot_path, 'rb') as f:
valid_snapshot_contents = f.read()
# we can only test this with a block that is already known, as otherwise the `loadtxoutset` RPC
# would time out (waiting to see the hash in the headers chain), rather than error immediately
bad_snapshot_height = SNAPSHOT_BASE_HEIGHT - 1
bad_snapshot_path = valid_snapshot_path + '.mod'
with open(bad_snapshot_path, 'wb') as f:
bad_snapshot_block_hash = self.nodes[0].getblockhash(bad_snapshot_height)
# block hash of the snapshot base is stored right at the start (first 32 bytes)
f.write(bytes.fromhex(bad_snapshot_block_hash)[::-1] + valid_snapshot_contents[32:])
expected_log = f"assumeutxo height in snapshot metadata not recognized ({bad_snapshot_height}) - refusing to load snapshot"
with self.nodes[1].assert_debug_log(expected_log):
assert_raises_rpc_error(-32603, "Unable to load UTXO snapshot", self.nodes[1].loadtxoutset, bad_snapshot_path)
def run_test(self):
"""
Bring up two (disconnected) nodes, mine some new blocks on the first,
@ -120,6 +143,8 @@ class AssumeutxoTest(BitcoinTestFramework):
assert_equal(n0.getblockchaininfo()["blocks"], FINAL_HEIGHT)
self.test_invalid_snapshot_scenarios(dump_output['path'])
self.log.info(f"Loading snapshot into second node from {dump_output['path']}")
loaded = n1.loadtxoutset(dump_output['path'])
assert_equal(loaded['coins_loaded'], SNAPSHOT_BASE_HEIGHT)