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itying_add_lib/
lib.rs

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