core_multiple_3/
lib.rs

1pub fn add(left: u64, right: u64) -> u64 {
2    left + right
3}
4
5#[cfg(test)]
6mod tests {
7    use super::*;
8
9    #[test]
10    fn it_works() {
11
12
13        let result = add(2, 2);
14        assert_eq!(result, 4);
15    }
16}