random.cpp raw

   1  // Copyright (c) 2020-present The Bitcoin Core developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #include <random.h>
   6  #include <test/fuzz/FuzzedDataProvider.h>
   7  #include <test/fuzz/fuzz.h>
   8  #include <test/fuzz/util.h>
   9  
  10  #include <algorithm>
  11  #include <cstdint>
  12  #include <string>
  13  #include <vector>
  14  
  15  FUZZ_TARGET(random)
  16  {
  17      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  18      FastRandomContext fast_random_context{ConsumeUInt256(fuzzed_data_provider)};
  19      (void)fast_random_context.rand64();
  20      (void)fast_random_context.randbits(fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 64));
  21      (void)fast_random_context.randrange(fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(FastRandomContext::min() + 1, FastRandomContext::max()));
  22      (void)fast_random_context.randbytes(fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 1024));
  23      (void)fast_random_context.rand32();
  24      (void)fast_random_context.rand256();
  25      (void)fast_random_context.randbool();
  26      (void)fast_random_context();
  27  
  28      std::vector<int64_t> integrals = ConsumeRandomLengthIntegralVector<int64_t>(fuzzed_data_provider);
  29      std::shuffle(integrals.begin(), integrals.end(), fast_random_context);
  30  }
  31