I'm not sure this is exactly what you are asking about, but Rust does support testing right in the language. You can add #[test] before a function to make it a

I'm not sure this is exactly what you are asking about, but Rust does support testing right in the language. You can add #[test] before a function to make it a test function (tests and regular functions can live together in the same file). https://doc.rust-lang.org/book/testing.html https://doc.rust-lang.org/book/testing.html