mosea_adder/
lib.rs

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//! add crate
//!
use rand::Rng;

pub fn add(left: u64, right: u64) -> u64 {
    left + right + rand::thread_rng().gen_range(1u64..100)
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn it_works() {
        let result = add(2, 2);
        assert_eq!(result, 4);
    }
}