#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::num::NonZero;
fn main() {
    test().unwrap();
}
fn test() -> Option<()> {
    let pos = NonZero::new(1i8)?;
    let neg = NonZero::new(-1i8)?;
    assert_eq!(pos, pos.abs());
    assert_eq!(pos, neg.abs());
    Some(())
}