45 lines
842 B
V
45 lines
842 B
V
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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import crypto.rand
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fn get_random_bytes(no_bytes int) []byte {
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r := rand.read(no_bytes) or {
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assert false
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return []
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}
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assert r.len == no_bytes
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return r
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}
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fn test_crypto_rand_read() {
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no_bytes := 100
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r1 := get_random_bytes(no_bytes)
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r2 := get_random_bytes(no_bytes)
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mut equals := 0
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for i in 0 .. r1.len {
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if r1[i] == r2[i] {
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equals++
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}
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}
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assert (100.0 * f32(equals) / f32(no_bytes)) < 20.0
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}
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fn test_crypto_rand_int_u64() {
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max := u64(160)
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mut unique := []u64{}
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for _ in 0 .. 80 {
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r := rand.int_u64(max) or {
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assert false
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return
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}
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if r >= max {
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assert false
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}
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if r !in unique {
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unique << r
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}
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}
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assert unique.len >= 10
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}
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