25 lines
776 B
Rust
25 lines
776 B
Rust
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use ring::rand::{self, SecureRandom};
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use std::vec;
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#[test]
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fn rand_test_system_random_lengths() {
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// Test that `fill` succeeds for various interesting lengths. `256` and
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// multiples thereof are interesting because that's an edge case for
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// `getrandom` on Linux.
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let lengths = [0, 1, 2, 3, 96, 255, 256, 257, 511, 512, 513, 4096];
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for len in lengths.iter() {
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let mut buf = vec![0; *len];
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let rng = rand::SystemRandom::new();
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assert!(rng.fill(&mut buf).is_ok());
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// If `len` < 96 then there's a big chance of false positives, but
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// otherwise the likelihood of a false positive is so too low to
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// worry about.
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if *len >= 96 {
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assert!(buf.iter().any(|x| *x != 0));
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}
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}
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}
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