forked from catchorg/Catch2
535da5c513
In the future, we will also want to introduce our own `uniform_int_distribution` and `uniform_real_distribution` to get repeatable test runs across different platforms.
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
/*
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* Created by Martin on 06/10/2019.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include "catch.hpp"
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#include "internal/catch_random_number_generator.h"
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TEST_CASE("Our PCG implementation provides expected results for known seeds", "[rng]") {
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Catch::SimplePcg32 rng;
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SECTION("Default seeded") {
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REQUIRE(rng() == 0xfcdb943b);
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REQUIRE(rng() == 0x6f55b921);
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REQUIRE(rng() == 0x4c17a916);
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REQUIRE(rng() == 0x71eae25f);
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REQUIRE(rng() == 0x6ce7909c);
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}
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SECTION("Specific seed") {
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rng.seed(0xabcd1234);
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REQUIRE(rng() == 0x57c08495);
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REQUIRE(rng() == 0x33c956ac);
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REQUIRE(rng() == 0x2206fd76);
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REQUIRE(rng() == 0x3501a35b);
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REQUIRE(rng() == 0xfdffb30f);
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// Also check repeated output after reseeding
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rng.seed(0xabcd1234);
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REQUIRE(rng() == 0x57c08495);
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REQUIRE(rng() == 0x33c956ac);
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REQUIRE(rng() == 0x2206fd76);
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REQUIRE(rng() == 0x3501a35b);
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REQUIRE(rng() == 0xfdffb30f);
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}
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}
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TEST_CASE("Comparison ops", "[rng]") {
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using Catch::SimplePcg32;
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REQUIRE(SimplePcg32{} == SimplePcg32{});
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REQUIRE(SimplePcg32{ 0 } != SimplePcg32{});
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REQUIRE_FALSE(SimplePcg32{ 1 } == SimplePcg32{ 2 });
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REQUIRE_FALSE(SimplePcg32{ 1 } != SimplePcg32{ 1 });
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}
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