use rand::{SeedableRng, FromEntropy, Rng, rngs::SmallRng}; // Having more than 1 test does seem to make a difference // (i.e., this calls ptr::swap which having just one test does not). #[test] fn simple() { assert_eq!(4, 4); } // Having more than 1 test does seem to make a difference // (i.e., this calls ptr::swap which having just one test does not). #[test] fn entropy_rng() { // Use this opportunity to test querying the RNG (needs an external crate, hence tested here and not in the compiletest suite) let mut rng = SmallRng::from_entropy(); let _val = rng.gen::(); // Also try per-thread RNG. let mut rng = rand::thread_rng(); let _val = rng.gen::(); } // A test that won't work on miri #[cfg(not(miri))] #[test] fn does_not_work_on_miri() { let x = 0u8; assert!(&x as *const _ as usize % 4 < 4); }