Revert testing changes

Signed-off-by: Joe Richey <joerichey@google.com>

tests/common/mod.rs

@@ -1,5 +1,4 @@
 use super::getrandom_impl;
-use core::mem::{self, MaybeUninit};
 
 #[cfg(all(target_arch = "wasm32", target_os = "unknown"))]
 use wasm_bindgen_test::wasm_bindgen_test as test;
@@ -10,16 +9,16 @@ wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
 #[test]
 fn test_zero() {
     // Test that APIs are happy with zero-length requests
-    getrandom_impl(unsafe { slice_as_uninit_mut(&mut [0u8; 0]) }).unwrap();
+    getrandom_impl(&mut [0u8; 0]).unwrap();
 }
 
 #[test]
 fn test_diff() {
     let mut v1 = [0u8; 1000];
-    getrandom_impl(unsafe { slice_as_uninit_mut(&mut v1) }).unwrap();
+    getrandom_impl(&mut v1).unwrap();
 
     let mut v2 = [0u8; 1000];
-    getrandom_impl(unsafe { slice_as_uninit_mut(&mut v2) }).unwrap();
+    getrandom_impl(&mut v2).unwrap();
 
     let mut n_diff_bits = 0;
     for i in 0..v1.len() {
@@ -33,7 +32,7 @@ fn test_diff() {
 #[test]
 fn test_huge() {
     let mut huge = [0u8; 100_000];
-    getrandom_impl(unsafe { slice_as_uninit_mut(&mut huge) }).unwrap();
+    getrandom_impl(&mut huge).unwrap();
 }
 
 // On WASM, the thread API always fails/panics
@@ -52,9 +51,9 @@ fn test_multithreading() {
             // wait until all the tasks are ready to go.
             rx.recv().unwrap();
             let mut v = [0u8; 1000];
-            let y = unsafe { slice_as_uninit_mut(&mut v) };
+
             for _ in 0..100 {
-                getrandom_impl(y).unwrap();
+                getrandom_impl(&mut v).unwrap();
                 thread::yield_now();
             }
         });
@@ -65,9 +64,3 @@ fn test_multithreading() {
         tx.send(()).unwrap();
     }
 }
-
-#[inline(always)]
-unsafe fn slice_as_uninit_mut<T>(slice: &mut [T]) -> &mut [MaybeUninit<T>] {
-    // SAFETY: `MaybeUninit<T>` is guaranteed to be layout-compatible with `T`.
-    mem::transmute(slice)
-}

tests/normal.rs

@@ -7,5 +7,5 @@
 )))]
 
 // Use the normal getrandom implementation on this architecture.
-use getrandom::getrandom_uninit as getrandom_impl;
+use getrandom::getrandom as getrandom_impl;
 mod common;