test/sys/test_sysinfo.rs

use nix::sys::sysinfo::*;

#[test]
fn sysinfo_works() {
    let info = sysinfo().unwrap();

    let (l1, l5, l15) = info.load_average();
    assert!(l1 >= 0.0);
    assert!(l5 >= 0.0);
    assert!(l15 >= 0.0);

    info.uptime();  // just test Duration construction

    assert!(info.swap_free() <= info.swap_total(),
            "more swap available than installed (free: {}, total: {})",
            info.swap_free(),
            info.swap_total());
}