Function test_preadv2_nowait

tests/io/read_write.rs:262–300

()

#[cfg(all(feature = "net", feature = "pipe"))]
#[test]
fn test_preadv2_nowait() {
    use rustix::io::{preadv2, ReadWriteFlags};
    use rustix::net::{socketpair, AddressFamily, SocketFlags, SocketType};
    use rustix::pipe::pipe;

    let mut buf = [0_u8; 5];

    let (reader, _writer) = socketpair(
        AddressFamily::UNIX,
        SocketType::STREAM,
        SocketFlags::CLOEXEC,
        None,
    )
    .unwrap();
    match preadv2(
        &reader,
        &mut [IoSliceMut::new(&mut buf)],
        u64::MAX,
        ReadWriteFlags::NOWAIT,
    ) {
        Err(rustix::io::Errno::OPNOTSUPP | rustix::io::Errno::NOSYS) => {}
        Err(rustix::io::Errno::AGAIN) => {}
        Ok(_) => panic!("preadv2 unexpectedly succeeded"),
        Err(e) => panic!("preadv2 failed with an unexpected error: {:?}", e),
    }

    let (reader, _writer) = pipe().unwrap();
    match preadv2(
        &reader,
        &mut [IoSliceMut::new(&mut buf)],
        u64::MAX,
        ReadWriteFlags::NOWAIT,
    ) {
        Err(rustix::io::Errno::OPNOTSUPP | rustix::io::Errno::NOSYS) => {}
        Err(rustix::io::Errno::AGAIN) => {}
        Ok(_) => panic!("preadv2 unexpectedly succeeded"),
        Err(e) => panic!("preadv2 failed with an unexpected error: {:?}", e),
    }
}

#[cfg(all(feature = "net", feature = "pipe"))]
#[cfg(not(target_os = "espidf"))] // no preadv/pwritev