tester 0.9.1

A fork of Rust’s `test` crate that doesn’t require unstable language features.

Support code for rustc's built in unit-test and micro-benchmarking framework.

Almost all user code will only be interested in Bencher and black_box. All other interactions (such as writing tests and benchmarks themselves) should be done via the #[test] and #[bench] attributes.

See the Testing Chapter of the book for more details.