import rand import math const ( rnd_count = 40 seeds = [42, 256] ) fn test_rand_reproducibility() { for seed in seeds { mut randoms1 := gen_randoms(seed) mut randoms2 := gen_randoms(seed) assert_randoms_equal(randoms1, randoms2) } } fn test_rand_r_reproducibility() { for seed in seeds { mut randoms1 := gen_randoms_r(seed) mut randoms2 := gen_randoms_r(seed) assert_randoms_equal(randoms1, randoms2) } } fn test_rand_r_seed_update() { seed := 10 for _ in 0 .. rnd_count { prev_seed := seed _ := rand.rand_r(&seed) assert prev_seed != seed } } fn gen_randoms(seed int) []int { mut randoms := [0].repeat(rnd_count) rand.seed(seed) for i in 0 .. rnd_count { randoms[i] = rand.next(100) } return randoms } fn gen_randoms_r(seed int) []int { mut randoms := [0].repeat(rnd_count) for i in 0 .. rnd_count { randoms[i] = rand.rand_r(&seed) } return randoms } fn assert_randoms_equal(r1, r2 []int) { for i in 0 .. rnd_count { assert r1[i] == r2[i] } }