1pub mod converter; 2pub fn add(left: usize, right: usize) -> usize { 3 left + right 4} 5 6#[cfg(test)] 7mod tests { 8 use super::*; 9 10 #[test] 11 fn it_works() { 12 let result = add(2, 2); 13 assert_eq!(result, 4); 14 } 15}