pub mod fns {
pub fn plus_one(num: i32) -> i32 {
num + 1
}
pub fn minus_one(num: i32) -> i32 {
num - 1
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_adds_one() {
assert_eq!(6, fns::plus_one(5));
}
#[test]
fn it_reduces_one() {
assert_eq!(4, fns::minus_one(5));
}
}