mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-22 21:36:11 +01:00
63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
|
|
// Copyright Catch2 Authors
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE.txt or copy at
|
|
// https://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
|
|
#include <catch2/catch_test_macros.hpp>
|
|
#include <catch2/internal/catch_random_number_generator.hpp>
|
|
#include <catch2/internal/catch_random_seed_generation.hpp>
|
|
#include <catch2/generators/catch_generators.hpp>
|
|
|
|
TEST_CASE("Our PCG implementation provides expected results for known seeds", "[rng]") {
|
|
Catch::SimplePcg32 rng;
|
|
SECTION("Default seeded") {
|
|
REQUIRE(rng() == 0xfcdb943b);
|
|
REQUIRE(rng() == 0x6f55b921);
|
|
REQUIRE(rng() == 0x4c17a916);
|
|
REQUIRE(rng() == 0x71eae25f);
|
|
REQUIRE(rng() == 0x6ce7909c);
|
|
}
|
|
SECTION("Specific seed") {
|
|
rng.seed(0xabcd1234);
|
|
REQUIRE(rng() == 0x57c08495);
|
|
REQUIRE(rng() == 0x33c956ac);
|
|
REQUIRE(rng() == 0x2206fd76);
|
|
REQUIRE(rng() == 0x3501a35b);
|
|
REQUIRE(rng() == 0xfdffb30f);
|
|
|
|
// Also check repeated output after reseeding
|
|
rng.seed(0xabcd1234);
|
|
REQUIRE(rng() == 0x57c08495);
|
|
REQUIRE(rng() == 0x33c956ac);
|
|
REQUIRE(rng() == 0x2206fd76);
|
|
REQUIRE(rng() == 0x3501a35b);
|
|
REQUIRE(rng() == 0xfdffb30f);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("Comparison ops", "[rng]") {
|
|
using Catch::SimplePcg32;
|
|
REQUIRE(SimplePcg32{} == SimplePcg32{});
|
|
REQUIRE(SimplePcg32{ 0 } != SimplePcg32{});
|
|
REQUIRE_FALSE(SimplePcg32{ 1 } == SimplePcg32{ 2 });
|
|
REQUIRE_FALSE(SimplePcg32{ 1 } != SimplePcg32{ 1 });
|
|
}
|
|
|
|
TEST_CASE("Random seed generation reports unknown methods", "[rng][seed]") {
|
|
REQUIRE_THROWS(Catch::generateRandomSeed(static_cast<Catch::GenerateFrom>(77)));
|
|
}
|
|
|
|
TEST_CASE("Random seed generation accepts known methods", "[rng][seed]") {
|
|
using Catch::GenerateFrom;
|
|
const auto method = GENERATE(
|
|
GenerateFrom::Time,
|
|
GenerateFrom::RandomDevice,
|
|
GenerateFrom::Default
|
|
);
|
|
|
|
REQUIRE_NOTHROW(Catch::generateRandomSeed(method));
|
|
}
|