51 lines
923 B
V
51 lines
923 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 test_crypto_rand_read() {
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no_bytes := 100
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max_percentage_diff := 20
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r1 := 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 r1.len == no_bytes
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r2 := 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 r2.len == no_bytes
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mut difference := 0
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for i, _ in r1 {
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difference += if r1[i] == r2[i] {0} else {1}
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}
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diff_percentage := f32(100) - (f32(difference)/f32(no_bytes)*100)
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assert diff_percentage <= max_percentage_diff
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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 := []int
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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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return
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}
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n := int(r)
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if n !in unique {
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unique << n
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}
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}
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assert unique.len >= 40
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}
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