// Copyright (c) 2020-2022 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 <policy/fees.h>

#include <policy/fees_args.h>

#include <streams.h>

#include <test/fuzz/FuzzedDataProvider.h>

#include <test/fuzz/fuzz.h>

#include <test/fuzz/util.h>

#include <test/util/setup_common.h>

#include <memory>

namespace {

const BasicTestingSetup* g_setup;

} // namespace

void initialize_policy_estimator_io()

{

    static const auto testing_setup = MakeNoLogFileContext<>();

    g_setup = testing_setup.get();

}

FUZZ_TARGET(policy_estimator_io, .init = initialize_policy_estimator_io)

{

    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());

    FuzzedFileProvider fuzzed_file_provider{fuzzed_data_provider};

    AutoFile fuzzed_auto_file{fuzzed_file_provider.open()};

    // Re-using block_policy_estimator across runs to avoid costly creation of CBlockPolicyEstimator object.

    static CBlockPolicyEstimator block_policy_estimator{FeeestPath(*g_setup->m_node.args), DEFAULT_ACCEPT_STALE_FEE_ESTIMATES};

    if (block_policy_estimator.Read(fuzzed_auto_file)) {

        block_policy_estimator.Write(fuzzed_auto_file);

    }

}