text: // Copyright (c) 2020-2021 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <merkleblock.h>
  #include <policy/fees.h>
  #include <rpc/util.h>
  #include <test/fuzz/FuzzedDataProvider.h>
  #include <test/fuzz/fuzz.h>
  #include <test/fuzz/util.h>
  #include <util/error.h>
  #include <util/translation.h>
  
  #include <array>
  #include <cstdint>
  #include <optional>
  #include <vector>
  
  namespace {
  constexpr TransactionError ALL_TRANSACTION_ERROR[] = {
      TransactionError::OK,
      TransactionError::MISSING_INPUTS,
      TransactionError::ALREADY_IN_CHAIN,
      TransactionError::P2P_DISABLED,
      TransactionError::MEMPOOL_REJECTED,
      TransactionError::MEMPOOL_ERROR,
      TransactionError::INVALID_PSBT,
      TransactionError::PSBT_MISMATCH,
      TransactionError::SIGHASH_MISMATCH,
      TransactionError::MAX_FEE_EXCEEDED,
  };
  }; // namespace
  
  // The fuzzing kitchen sink: Fuzzing harness for functions that need to be
  // fuzzed but a.) don't belong in any existing fuzzing harness file, and
  // b.) are not important enough to warrant their own fuzzing harness file.
  FUZZ_TARGET(kitchen_sink)
  {
      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  
      const TransactionError transaction_error = fuzzed_data_provider.PickValueInArray(ALL_TRANSACTION_ERROR);
      (void)JSONRPCTransactionError(transaction_error);
      (void)RPCErrorFromTransactionError(transaction_error);
      (void)TransactionErrorString(transaction_error);
  
      (void)StringForFeeEstimateHorizon(fuzzed_data_provider.PickValueInArray(ALL_FEE_ESTIMATE_HORIZONS));
  
      const OutputType output_type = fuzzed_data_provider.PickValueInArray(OUTPUT_TYPES);
      const std::string& output_type_string = FormatOutputType(output_type);
      const std::optional<OutputType> parsed = ParseOutputType(output_type_string);
      assert(parsed);
      assert(output_type == parsed.value());
      (void)ParseOutputType(fuzzed_data_provider.ConsumeRandomLengthString(64));
  
      const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
      const std::vector<bool> bits = BytesToBits(bytes);
      const std::vector<uint8_t> bytes_decoded = BitsToBytes(bits);
      assert(bytes == bytes_decoded);
  }
  