1#![cfg_attr(nightly, feature(doc_auto_cfg))]
2
3pub fn add(left: usize, right: usize) -> usize {
4 left + right
5}
6
7#[cfg(test)]
8mod tests {
9 use super::*;
10
11 #[test]
12 fn it_works() {
13 let result = add(2, 2);
14 assert_eq!(result, 4);
15 }
16}