Fix tests on no_std

Author: vks

src/distributions/bernoulli.rs

@@ -79,14 +79,13 @@ impl Distribution<bool> for Bernoulli {
 
 #[cfg(test)]
 mod test {
-    use rngs::SmallRng;
-    use {Rng, FromEntropy};
+    use Rng;
     use distributions::Distribution;
     use super::Bernoulli;
 
     #[test]
     fn test_trivial() {
-        let mut r = SmallRng::from_entropy();
+        let mut r = ::test::rng(1);
         let always_false = Bernoulli::new(0.0);
         let always_true = Bernoulli::new(1.0);
         for _ in 0..5 {
@@ -104,7 +103,7 @@ mod test {
         const N: u32 = 10_000_000;
 
         let mut sum: u32 = 0;
-        let mut rng = SmallRng::from_entropy();
+        let mut rng = ::test::rng(2);
         for _ in 0..N {
             if d.sample(&mut rng) {
                 sum += 1;

tests/bool.rs

@@ -2,8 +2,8 @@
 
 extern crate rand;
 
+use rand::SeedableRng;
 use rand::rngs::SmallRng;
-use rand::FromEntropy;
 use rand::distributions::{Distribution, Bernoulli};
 
 /// This test should make sure that we don't accidentally have undefined
@@ -15,7 +15,8 @@ fn large_probability() {
     let p = 1. - ::core::f64::EPSILON / 2.;
     assert!(p < 1.);
     let d = Bernoulli::new(p);
-    let mut rng = SmallRng::from_entropy();
+    let mut rng = SmallRng::from_seed(
+        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]);
     for _ in 0..10 {
         assert!(d.sample(&mut rng), "extremely unlikely to fail by accident");
     }