diff --git a/src/test/bloom_tests.cpp b/src/test/bloom_tests.cpp index 514b325b2d1..4a7ad9b38ba 100644 --- a/src/test/bloom_tests.cpp +++ b/src/test/bloom_tests.cpp @@ -461,7 +461,7 @@ static std::vector RandomData() BOOST_AUTO_TEST_CASE(rolling_bloom) { - SeedInsecureRand(/* deterministic */ true); + SeedInsecureRand(SeedRand::ZEROS); g_mock_deterministic_tests = true; // last-100-entry, 1% false positive: diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp index 7ad276df968..436c1bffa01 100644 --- a/src/test/coins_tests.cpp +++ b/src/test/coins_tests.cpp @@ -279,7 +279,7 @@ UtxoData::iterator FindRandomFrom(const std::set &utxoSet) { // has the expected effect (the other duplicate is overwritten at all cache levels) BOOST_AUTO_TEST_CASE(updatecoins_simulation_test) { - SeedInsecureRand(/* deterministic */ true); + SeedInsecureRand(SeedRand::ZEROS); g_mock_deterministic_tests = true; bool spent_a_duplicate_coinbase = false; diff --git a/src/test/cuckoocache_tests.cpp b/src/test/cuckoocache_tests.cpp index 87b32eef1ac..119d4b32953 100644 --- a/src/test/cuckoocache_tests.cpp +++ b/src/test/cuckoocache_tests.cpp @@ -29,7 +29,7 @@ BOOST_AUTO_TEST_SUITE(cuckoocache_tests); */ BOOST_AUTO_TEST_CASE(test_cuckoocache_no_fakes) { - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); CuckooCache::cache cc{}; size_t megabytes = 4; cc.setup_bytes(megabytes << 20); @@ -47,7 +47,7 @@ BOOST_AUTO_TEST_CASE(test_cuckoocache_no_fakes) template static double test_cache(size_t megabytes, double load) { - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); std::vector hashes; Cache set{}; size_t bytes = megabytes * (1 << 20); @@ -118,7 +118,7 @@ template static void test_cache_erase(size_t megabytes) { double load = 1; - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); std::vector hashes; Cache set{}; size_t bytes = megabytes * (1 << 20); @@ -181,7 +181,7 @@ template static void test_cache_erase_parallel(size_t megabytes) { double load = 1; - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); std::vector hashes; Cache set{}; size_t bytes = megabytes * (1 << 20); @@ -285,7 +285,7 @@ static void test_cache_generations() // iterations with non-deterministic values, so it isn't "overfit" to the // specific entropy in FastRandomContext(true) and implementation of the // cache. - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); // block_activity models a chunk of network activity. n_insert elements are // added to the cache. The first and last n/4 are stored for removal later diff --git a/src/test/pmt_tests.cpp b/src/test/pmt_tests.cpp index 717e8c4cab5..bf58bd63b95 100644 --- a/src/test/pmt_tests.cpp +++ b/src/test/pmt_tests.cpp @@ -30,7 +30,6 @@ BOOST_FIXTURE_TEST_SUITE(pmt_tests, BasicTestingSetup) BOOST_AUTO_TEST_CASE(pmt_test1) { - SeedInsecureRand(false); static const unsigned int nTxCounts[] = {1, 4, 7, 17, 56, 100, 127, 256, 312, 513, 1000, 4095}; for (int i = 0; i < 12; i++) { diff --git a/src/test/sighash_tests.cpp b/src/test/sighash_tests.cpp index 903ef0b0a92..2c56bbdbb04 100644 --- a/src/test/sighash_tests.cpp +++ b/src/test/sighash_tests.cpp @@ -119,8 +119,6 @@ BOOST_FIXTURE_TEST_SUITE(sighash_tests, BasicTestingSetup) BOOST_AUTO_TEST_CASE(sighash_test) { - SeedInsecureRand(false); - #if defined(PRINT_SIGHASH_JSON) std::cout << "[\n"; std::cout << "\t[\"raw_transaction, script, input_index, hashType, signature_hash (result)\"],\n"; diff --git a/src/test/streams_tests.cpp b/src/test/streams_tests.cpp index c6a6e8752bc..177d8fda737 100644 --- a/src/test/streams_tests.cpp +++ b/src/test/streams_tests.cpp @@ -338,7 +338,7 @@ BOOST_AUTO_TEST_CASE(streams_buffered_file) BOOST_AUTO_TEST_CASE(streams_buffered_file_rand) { // Make this test deterministic. - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); for (int rep = 0; rep < 50; ++rep) { FILE* file = fsbridge::fopen("streams_test_tmp", "w+b"); diff --git a/src/test/util/setup_common.cpp b/src/test/util/setup_common.cpp index 2099684809b..0c6ecdf69d5 100644 --- a/src/test/util/setup_common.cpp +++ b/src/test/util/setup_common.cpp @@ -34,6 +34,27 @@ const std::function G_TRANSLATION_FUN = nullptr; FastRandomContext g_insecure_rand_ctx; +/** Random context to get unique temp data dirs. Separate from g_insecure_rand_ctx, which can be seeded from a const env var */ +static FastRandomContext g_insecure_rand_ctx_temp_path; + +/** Return the unsigned from the environment var if available, otherwise 0 */ +static uint256 GetUintFromEnv(const std::string& env_name) +{ + const char* num = std::getenv(env_name.c_str()); + if (!num) return {}; + return uint256S(num); +} + +void Seed(FastRandomContext& ctx) +{ + // Should be enough to get the seed once for the process + static uint256 seed{}; + static const std::string RANDOM_CTX_SEED{"RANDOM_CTX_SEED"}; + if (seed.IsNull()) seed = GetUintFromEnv(RANDOM_CTX_SEED); + if (seed.IsNull()) seed = GetRandHash(); + LogPrintf("%s: Setting random seed for current tests to %s=%s\n", __func__, RANDOM_CTX_SEED, seed.GetHex()); + ctx = FastRandomContext(seed); +} std::ostream& operator<<(std::ostream& os, const uint256& num) { @@ -42,12 +63,13 @@ std::ostream& operator<<(std::ostream& os, const uint256& num) } BasicTestingSetup::BasicTestingSetup(const std::string& chainName) - : m_path_root(fs::temp_directory_path() / "test_common_" PACKAGE_NAME / strprintf("%lu_%i", (unsigned long)GetTime(), (int)(InsecureRandRange(1 << 30)))) + : m_path_root{fs::temp_directory_path() / "test_common_" PACKAGE_NAME / std::to_string(g_insecure_rand_ctx_temp_path.rand32())} { fs::create_directories(m_path_root); gArgs.ForceSetArg("-datadir", m_path_root.string()); ClearDatadirCache(); SelectParams(chainName); + SeedInsecureRand(); gArgs.ForceSetArg("-printtoconsole", "0"); InitLogging(); LogInstance().StartLogging(); diff --git a/src/test/util/setup_common.h b/src/test/util/setup_common.h index 5467cd6cce5..1e2e059a561 100644 --- a/src/test/util/setup_common.h +++ b/src/test/util/setup_common.h @@ -39,9 +39,21 @@ extern FastRandomContext g_insecure_rand_ctx; */ extern bool g_mock_deterministic_tests; -static inline void SeedInsecureRand(bool deterministic = false) +enum class SeedRand { + ZEROS, //!< Seed with a compile time constant of zeros + SEED, //!< Call the Seed() helper +}; + +/** Seed the given random ctx or use the seed passed in via an environment var */ +void Seed(FastRandomContext& ctx); + +static inline void SeedInsecureRand(SeedRand seed = SeedRand::SEED) { - g_insecure_rand_ctx = FastRandomContext(deterministic); + if (seed == SeedRand::ZEROS) { + g_insecure_rand_ctx = FastRandomContext(/* deterministic */ true); + } else { + Seed(g_insecure_rand_ctx); + } } static inline uint32_t InsecureRand32() { return g_insecure_rand_ctx.rand32(); } diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp index 974106adc45..daf6d951bce 100644 --- a/src/test/util_tests.cpp +++ b/src/test/util_tests.cpp @@ -1106,7 +1106,7 @@ BOOST_AUTO_TEST_CASE(util_IsHexNumber) BOOST_AUTO_TEST_CASE(util_seed_insecure_rand) { - SeedInsecureRand(true); + SeedInsecureRand(SeedRand::ZEROS); for (int mod=2;mod<11;mod++) { int mask = 1;