getrandom/tests/rdrand.rs
Brian Smith 47a59dda25
Add getrandom_uninit_slice(dest: &mut [MaybeUninit<u8>]) -> .... (#291)
* Add `getrandom_uninit(dest: &mut [MaybeUninit<u8>]) -> ...`.

Add a public API for filling an `&mut [MaybeUninit<u8>]`. This will primarily
serve as the building block for more typeful APIs for constructing random
arrays.

Increase the MSRV to 1.36, as `MaybeUninit` was added in that release.

Fixes #226.

* Revert testing changes

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

* Allow rdrand tests to work with new implementation

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

* Add Additional benchmarks and buffer size

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

* Use pointer casts instead of transmute

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

* Avoid initializing the buffer in `getrandom_uninit` benchmarks.

* Benchmarks: Consume the result in `black_box`.

Signed-off-by: Joe Richey <joerichey@google.com>
Co-authored-by: Joe Richey <joerichey@google.com>
2022-10-20 19:09:20 -07:00

21 lines
701 B
Rust

// We only test the RDRAND-based RNG source on supported architectures.
#![cfg(any(target_arch = "x86_64", target_arch = "x86"))]
// rdrand.rs expects to be part of the getrandom main crate, so we need these
// additional imports to get rdrand.rs to compile.
use getrandom::Error;
#[macro_use]
extern crate cfg_if;
#[path = "../src/rdrand.rs"]
mod rdrand;
#[path = "../src/util.rs"]
mod util;
// The rdrand implementation has the signature of getrandom_uninit(), but our
// tests expect getrandom_impl() to have the signature of getrandom().
fn getrandom_impl(dest: &mut [u8]) -> Result<(), Error> {
rdrand::getrandom_inner(unsafe { util::slice_as_uninit_mut(dest) })?;
Ok(())
}
mod common;