v/vlib/rand/rand_test.v

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import rand
fn gen_randoms(seed int) []int {
mut randoms := [0].repeat(20)
rand.seed(seed)
for i in 0..20 {
randoms[i] = rand.next(100)
}
return randoms
}
fn test_rand_reproducibility() {
mut randoms1 := gen_randoms(42)
mut randoms2 := gen_randoms(42)
assert randoms1.len == randoms2.len
mut len := randoms1.len
for i in 0..len {
assert randoms1[i] == randoms2[i]
}
randoms1 = gen_randoms(256)
randoms2 = gen_randoms(256)
assert randoms1.len == randoms2.len
len = randoms1.len
for i in 0..len {
assert randoms1[i] == randoms2[i]
}
}
2019-09-16 21:21:21 +02:00
fn gen_randoms_r(seed int) []int {
mut randoms := [0].repeat(20)
for i in 0..20 {
randoms[i] = rand.rand_r(&seed)
}
return randoms
}
fn test_rand_r_reproducibility() {
mut randoms1 := gen_randoms_r(42)
mut randoms2 := gen_randoms_r(42)
assert randoms1.len == randoms2.len
mut len := randoms1.len
for i in 0..len {
assert randoms1[i] == randoms2[i]
}
randoms1 = gen_randoms_r(256)
randoms2 = gen_randoms_r(256)
assert randoms1.len == randoms2.len
len = randoms1.len
for i in 0..len {
assert randoms1[i] == randoms2[i]
}
}