Snippet to run SetUp/TeadDown in Rust Unit Tests

test.rs

// Kudos Eric Opines https://medium.com/@ericdreichert/test-setup-and-teardown-in-rust-without-a-framework-ba32d97aa5ab
// This is bit modified post from his blog post.
#[cfg(test)]
mod tests {
    use std::fs::read_dir;
    use std::panic;

    #[test]
    fn it_works() {
        run_test(|| {
            assert_eq!(2 + 2, 5);
        });
    }

    fn setup(){

    }
    fn teardown(){
        println!("Teardwon!")
    }

    fn run_test<T>(test: T) -> ()
        where T: FnOnce() -> () + panic::UnwindSafe
    {
        setup();

        let result = panic::catch_unwind(|| {
            test()
        });

        teardown();

        if let Err(err) = result {
            panic::resume_unwind(err);
        }
    }
}

Alternative way:

    #[test]
    fn it_works() {
        struct MyGuard{};
        impl Drop for MyGuard{
            fn drop(&mut self) {
                println!("Teardwon!")
            }
        }
        let _guard = MyGuard { }; // must not be just `_`  otherwise would be dropped immediately

        assert_eq!(2 + 2, 5);
    }

Can be wrapped in macros I guess