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74 lines
1.5 KiB
74 lines
1.5 KiB
#include <test_common.h>
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#include <igl/randperm.h>
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#include <random>
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TEST_CASE("randperm: default_rng_reproduce_identity", "[igl]")
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{
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int n = 100;
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Eigen::VectorXi I1, I2;
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std::srand(6);
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igl::randperm(100, I1);
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std::srand(6);
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igl::randperm(100, I2);
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test_common::assert_eq(I1, I2);
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}
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namespace randperm
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{
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template<typename URBG>
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void test_reproduce()
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{
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int n = 100;
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Eigen::VectorXi I1, I2;
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Eigen::MatrixXi Ix1, Ix2;
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URBG rng1(6);
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URBG rng2(6);
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igl::randperm(100, I1, rng1);
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igl::randperm(100, I2, rng2);
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igl::randperm(100, Ix1, rng1);
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igl::randperm(100, Ix2, rng2);
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test_common::assert_eq(I1, I2);
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test_common::assert_eq(Ix1, Ix2);
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test_common::assert_neq(I1, Ix1);
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test_common::assert_neq(I2, Ix2);
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}
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}
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TEST_CASE("randperm: minstd_rand0_reproduce_identity", "[igl]")
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{
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randperm::test_reproduce<std::minstd_rand0>();
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}
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TEST_CASE("randperm: minstd_rand_reproduce_identity", "[igl]")
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{
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randperm::test_reproduce<std::minstd_rand>();
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}
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TEST_CASE("randperm: mt19937_reproduce_identity", "[igl]")
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{
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randperm::test_reproduce<std::mt19937>();
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}
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TEST_CASE("randperm: mt19937_64_reproduce_identity", "[igl]")
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{
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randperm::test_reproduce<std::mt19937_64>();
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}
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TEST_CASE("randperm: default_identity", "[igl]")
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{
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int n = 100;
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Eigen::VectorXi I1, I2;
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Eigen::MatrixXi Ix1, Ix2;
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std::srand(0);
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igl::randperm(100, I1);
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igl::randperm(100, Ix1);
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std::srand(0);
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igl::randperm(100, I2);
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igl::randperm(100, Ix2);
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test_common::assert_eq(I1, I2);
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test_common::assert_eq(Ix1, Ix2);
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}
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