Merge bitcoin/bitcoin#30329: fuzz: improve utxo_snapshot target

de71d4dece fuzz: improve utxo_snapshot target (Martin Zumsande)

Pull request description:

  Add the possibility of giving more guidance to the creation of the metadata and/or coins, so that the fuzzer gets the chance
  to reach more error conditions in ActivateSnapshot and sometimes successfully creates a valid snapshot.

  This also changes the asserts for the success case that were outdated (after #29370) and only didn't result in a crash because the fuzzer wasn't able to reach this code before.

ACKs for top commit:
  maflcko:
    re-ACK de71d4dece 🎆
  fjahr:
    utACK de71d4dece
  TheCharlatan:
    ACK de71d4dece

Tree-SHA512: 346974d594164544d8cd3df7d8362c905fd93116215e9f5df308dfdac55bab04d727bfd7fd001cf11318682d11ee329b4b4a43308124c04d64b67840ab8a58a0
This commit is contained in:
Ryan Ofsky
2024-07-09 15:38:39 -04:00
3 changed files with 47 additions and 10 deletions

View File

@@ -117,7 +117,7 @@ class AssumeutxoTest(BitcoinTestFramework):
with open(bad_snapshot_path, 'wb') as f:
f.write(valid_snapshot_contents[:11] + bogus_height.to_bytes(4, "little") + bytes.fromhex(bad_block_hash)[::-1] + valid_snapshot_contents[47:])
msg = f"Unable to load UTXO snapshot: assumeutxo block hash in snapshot metadata not recognized (hash: {bad_block_hash}, height: {bogus_height}). The following snapshot heights are available: 110, 299."
msg = f"Unable to load UTXO snapshot: assumeutxo block hash in snapshot metadata not recognized (hash: {bad_block_hash}, height: {bogus_height}). The following snapshot heights are available: 110, 200, 299."
assert_raises_rpc_error(-32603, msg, node.loadtxoutset, bad_snapshot_path)
self.log.info(" - snapshot file with wrong number of coins")