bump libcore tests to rand 0.7

Author: RalfJung

Cargo.lock

@@ -514,7 +514,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "core"
 version = "0.0.0"
 dependencies = [
- "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]

src/libcore/Cargo.toml

@@ -21,7 +21,7 @@ name = "corebenches"
 path = "../libcore/benches/lib.rs"
 
 [dev-dependencies]
-rand = "0.6"
+rand = "0.7"
 
 [features]
 # Make panics and failed asserts immediately abort without formatting any message

src/libcore/tests/num/flt2dec/random.rs

@@ -8,8 +8,8 @@ use core::num::flt2dec::strategy::grisu::format_exact_opt;
 use core::num::flt2dec::strategy::grisu::format_shortest_opt;
 use core::num::flt2dec::{decode, DecodableFloat, FullDecoded, Decoded};
 
-use rand::FromEntropy;
-use rand::rngs::SmallRng;
+use rand::SeedableRng;
+use rand::rngs::StdRng;
 use rand::distributions::{Distribution, Uniform};
 
 pub fn decode_finite<T: DecodableFloat>(v: T) -> Decoded {
@@ -65,7 +65,7 @@ pub fn f32_random_equivalence_test<F, G>(f: F, g: G, k: usize, n: usize)
     if cfg!(target_os = "emscripten") {
         return // using rng pulls in i128 support, which doesn't work
     }
-    let mut rng = SmallRng::from_entropy();
+    let mut rng = StdRng::from_entropy();
     let f32_range = Uniform::new(0x0000_0001u32, 0x7f80_0000);
     iterate("f32_random_equivalence_test", k, n, f, g, |_| {
         let x = f32::from_bits(f32_range.sample(&mut rng));
@@ -79,7 +79,7 @@ pub fn f64_random_equivalence_test<F, G>(f: F, g: G, k: usize, n: usize)
     if cfg!(target_os = "emscripten") {
         return // using rng pulls in i128 support, which doesn't work
     }
-    let mut rng = SmallRng::from_entropy();
+    let mut rng = StdRng::from_entropy();
     let f64_range = Uniform::new(0x0000_0000_0000_0001u64, 0x7ff0_0000_0000_0000);
     iterate("f64_random_equivalence_test", k, n, f, g, |_| {
         let x = f64::from_bits(f64_range.sample(&mut rng));

src/libcore/tests/slice.rs

@@ -1157,7 +1157,7 @@ fn test_rotate_right() {
 fn sort_unstable() {
     use core::cmp::Ordering::{Equal, Greater, Less};
     use core::slice::heapsort;
-    use rand::{FromEntropy, Rng, rngs::SmallRng, seq::SliceRandom};
+    use rand::{SeedableRng, Rng, rngs::StdRng, seq::SliceRandom};
 
     #[cfg(not(miri))] // Miri is too slow
     let large_range = 500..510;
@@ -1171,7 +1171,7 @@ fn sort_unstable() {
 
     let mut v = [0; 600];
     let mut tmp = [0; 600];
-    let mut rng = SmallRng::from_entropy();
+    let mut rng = StdRng::from_entropy();
 
     for len in (2..25).chain(large_range) {
         let v = &mut v[0..len];
@@ -1237,11 +1237,11 @@ fn sort_unstable() {
 #[cfg(not(miri))] // Miri is too slow
 fn partition_at_index() {
     use core::cmp::Ordering::{Equal, Greater, Less};
-    use rand::rngs::SmallRng;
+    use rand::rngs::StdRng;
     use rand::seq::SliceRandom;
-    use rand::{FromEntropy, Rng};
+    use rand::{SeedableRng, Rng};
 
-    let mut rng = SmallRng::from_entropy();
+    let mut rng = StdRng::from_entropy();
 
     for len in (2..21).chain(500..501) {
         let mut orig = vec![0; len];