1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13

pub fn add_one_boring(x: i32) -> i32 {
    x + 1
}

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

    #[test]
    fn it_works() {
        assert_eq!(add_one_boring(4), 5);
    }
}