test_lib1234/
lib.rs

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