Function VerifyIterator

src/test/fuzz/dbwrapper.cpp:142–168

Verify that the DB iterator matches the oracle, handling the obfuscation * metadata entry (stored under a non-uint16_t key) when obfuscation is on. */

/** Verify that the DB iterator matches the oracle, handling the obfuscation
 *  metadata entry (stored under a non-uint16_t key) when obfuscation is on. */
void VerifyIterator(CDBWrapper& dbw, const Oracle& oracle,
                    bool obfuscate, std::optional<uint16_t> seek_key = std::nullopt)
{
    const std::unique_ptr<CDBIterator> it{dbw.NewIterator()};
    auto oracle_it{seek_key ? oracle.lower_bound(*seek_key) : oracle.begin()};
    if (seek_key) {
        it->Seek(*seek_key);
    } else {
        it->SeekToFirst();
    }
    for (; it->Valid(); it->Next()) {
        uint16_t db_key;
        assert(it->GetKey(db_key));
        if (oracle_it != oracle.end() && db_key == oracle_it->first) {
            std::vector<uint8_t> db_value;
            assert(it->GetValue(db_value));
            assert(db_value == MakeValue(db_key, oracle_it->second));
            ++oracle_it;
        } else {
            assert(obfuscate);
            std::string key_str;
            assert(it->GetKey(key_str));
            assert(key_str == OBFUSCATION_KEY);
        }
    }
    assert(oracle_it == oracle.end());
}

/** Maximum number of concurrent reader threads in dbwrapper_concurrent_reads. */
constexpr size_t MAX_READ_WORKERS{8};