test_crates_io/
lib.rs

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