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#[cfg(feature = "wasm-bindgen")]
use wasm_bindgen_test::*;
use getrandom::getrandom;
#[cfg(feature = "test-in-browser")]
wasm_bindgen_test_configure!(run_in_browser);
#[cfg_attr(feature = "wasm-bindgen", wasm_bindgen_test)]
#[test]
fn test_zero() {
// Test that APIs are happy with zero-length requests
getrandom(&mut [0u8; 0]).unwrap();
}
#[cfg_attr(feature = "wasm-bindgen", wasm_bindgen_test)]
#[test]
fn test_diff() {
let mut v1 = [0u8; 1000];
getrandom(&mut v1).unwrap();
let mut v2 = [0u8; 1000];
getrandom(&mut v2).unwrap();
let mut n_diff_bits = 0;
for i in 0..v1.len() {
n_diff_bits += (v1[i] ^ v2[i]).count_ones();
}
// Check at least 1 bit per byte differs. p(failure) < 1e-1000 with random input.
assert!(n_diff_bits >= v1.len() as u32);
}
#[cfg_attr(feature = "wasm-bindgen", wasm_bindgen_test)]
#[test]
fn test_huge() {
let mut huge = [0u8; 100_000];
getrandom(&mut huge).unwrap();
}
#[cfg(any(unix, windows, target_os = "redox", target_os = "fuchsia"))]
#[test]
fn test_multithreading() {
use std::sync::mpsc::channel;
use std::thread;
let mut txs = vec![];
for _ in 0..20 {
let (tx, rx) = channel();
txs.push(tx);
thread::spawn(move || {
// wait until all the tasks are ready to go.
rx.recv().unwrap();
let mut v = [0u8; 1000];
for _ in 0..100 {
getrandom(&mut v).unwrap();
thread::yield_now();
}
});
}
// start all the tasks
for tx in txs.iter() {
tx.send(()).unwrap();
}
}
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