use ach_once::Once;

#[test]
fn base() {
    static CELL: Once<usize> = Once::new();

    assert!(CELL.get().is_err());
    assert!(CELL.set(1).is_ok());
    assert!(CELL.is_initialized());
    assert!(CELL.set(2).is_err());
    assert_eq!(CELL.get().unwrap(), &1);
}