// Copyright (c) 2020 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 <random.h>

#include <test/fuzz/FuzzedDataProvider.h>

#include <test/fuzz/fuzz.h>

#include <test/fuzz/util.h>

#include <algorithm>

#include <cstdint>

#include <string>

#include <vector>

FUZZ_TARGET(random)

{

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

    FastRandomContext fast_random_context{ConsumeUInt256(fuzzed_data_provider)};

    (void)fast_random_context.rand64();

    (void)fast_random_context.randbits(fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 64));

    (void)fast_random_context.randrange(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(FastRandomContext::min() + 1, FastRandomContext::max()));

    (void)fast_random_context.randbytes(fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 1024));

    (void)fast_random_context.rand32();

    (void)fast_random_context.rand256();

    (void)fast_random_context.randbool();

    (void)fast_random_context();

    std::vector<int64_t> integrals = ConsumeRandomLengthIntegralVector<int64_t>(fuzzed_data_provider);

    std::shuffle(integrals.begin(), integrals.end(), fast_random_context);

}