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1// Copyright (c) 2023-present The Bitcoin Core developers2// Distributed under the MIT software license, see the accompanying3// file COPYING or http://www.opensource.org/licenses/mit-license.php.5#ifndef BITCOIN_TEST_UTIL_RANDOM_H6#define BITCOIN_TEST_UTIL_RANDOM_H8#include <consensus/amount.h>9#include <random.h>10#include <uint256.h>12#include <atomic>13#include <cstdint>15enum class SeedRand {16/**17* Seed with a compile time constant of zeros.18*/19ZEROS,20/**21* Seed with a fixed value that never changes over the lifetime of this22* process. The seed is read from the RANDOM_CTX_SEED environment variable23* if set, otherwise generated randomly once, saved, and reused.24*/25FIXED_SEED,26};28/** Seed the global RNG state for testing and log the seed value. This affects all randomness, except GetStrongRandBytes(). */29void SeedRandomStateForTest(SeedRand seed);31extern std::atomic<bool> g_seeded_g_prng_zero;32extern std::atomic<bool> g_used_g_prng;34template <RandomNumberGenerator Rng>35inline CAmount RandMoney(Rng&& rng)36{37return CAmount{rng.randrange(MAX_MONEY + 1)};38}40#endif // BITCOIN_TEST_UTIL_RANDOM_H
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