diff options
Diffstat (limited to 'src/test/util/setup_common.cpp')
-rw-r--r-- | src/test/util/setup_common.cpp | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/test/util/setup_common.cpp b/src/test/util/setup_common.cpp index 2099684809..0c6ecdf69d 100644 --- a/src/test/util/setup_common.cpp +++ b/src/test/util/setup_common.cpp @@ -34,6 +34,27 @@ const std::function<std::string(const char*)> 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(); |