diff options
Diffstat (limited to 'rand/rand_os/tests/mod.rs')
-rw-r--r-- | rand/rand_os/tests/mod.rs | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/rand/rand_os/tests/mod.rs b/rand/rand_os/tests/mod.rs deleted file mode 100644 index 2130e16..0000000 --- a/rand/rand_os/tests/mod.rs +++ /dev/null @@ -1,80 +0,0 @@ -extern crate rand_os; - -use rand_os::rand_core::RngCore; -use rand_os::OsRng; - -#[test] -fn test_os_rng() { - let mut r = OsRng::new().unwrap(); - - r.next_u32(); - r.next_u64(); - - let mut v1 = [0u8; 1000]; - r.fill_bytes(&mut v1); - - let mut v2 = [0u8; 1000]; - r.fill_bytes(&mut v2); - - 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); -} - -#[test] -fn test_os_rng_empty() { - let mut r = OsRng::new().unwrap(); - - let mut empty = [0u8; 0]; - r.fill_bytes(&mut empty); -} - -#[test] -fn test_os_rng_huge() { - let mut r = OsRng::new().unwrap(); - - let mut huge = [0u8; 100_000]; - r.fill_bytes(&mut huge); -} - -#[cfg(not(any(target_arch = "wasm32", target_arch = "asmjs")))] -#[test] -fn test_os_rng_tasks() { - 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(); - - // deschedule to attempt to interleave things as much - // as possible (XXX: is this a good test?) - let mut r = OsRng::new().unwrap(); - thread::yield_now(); - let mut v = [0u8; 1000]; - - for _ in 0..100 { - r.next_u32(); - thread::yield_now(); - r.next_u64(); - thread::yield_now(); - r.fill_bytes(&mut v); - thread::yield_now(); - } - }); - } - - // start all the tasks - for tx in txs.iter() { - tx.send(()).unwrap(); - } -} |