#[cfg(test)]
mod examples {
    use day45::xor;

    #[test]
    fn test_example() {
        assert_eq!(xor(&mut 10, &mut 41), 31);
    }

    #[test]
    fn test_example2() {
        assert_eq!(xor(&mut 69, &mut 420), 351);
    }

    #[test]
    fn test_example3() {
        assert_eq!(xor(&mut 12345, &mut 890412), 878067);
    }

    #[test]
    fn test_example4() {
        assert_eq!(xor(&mut 2, &mut 1), -1);
    }
}