message: deduplicate tests
diff: 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);
  @@ -7,14 +9,6 @@ fn simple() {
  // 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 fixed_rng() {
  - let mut rng = rand::rngs::StdRng::seed_from_u64(0xdeadcafe);
  - let x: u32 = rng.gen();
  - let y: u32 = rng.gen();
  - assert_ne!(x, y);
  -}
  -
  #[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)
  