rlimit 0.11.0

Resource limits
Documentation 
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use super::atomically;

#[test]
fn maxstdio() {
    atomically(|| {
        assert_eq!(rlimit::getmaxstdio(), 512);
        assert_eq!(rlimit::setmaxstdio(2048).unwrap(), 2048);
        assert_eq!(rlimit::getmaxstdio(), 2048);
    });
}

#[test]
fn maxstdio_overflow() {
    // Test that u32::MAX is rejected (would overflow to negative when cast to c_int)
    let result = rlimit::setmaxstdio(u32::MAX);
    assert!(result.is_err());
    assert_eq!(result.unwrap_err().kind(), std::io::ErrorKind::InvalidInput);
}

#[test]
fn maxstdio_large_value() {
    // Test that values larger than c_int::MAX are rejected
    let test_value = (std::os::raw::c_int::MAX as u32) + 1;
    let result = rlimit::setmaxstdio(test_value);
    assert!(result.is_err());
    assert_eq!(result.unwrap_err().kind(), std::io::ErrorKind::InvalidInput);
}