fn test_big_random_buf() {
    let mut buf = Vec::new();
    buf.resize(1024, 0);
    unsafe {
        wasi::random_get(buf.as_mut_ptr(), 1024).expect("failed to call random_get");
    }
    // Chances are pretty good that at least *one* byte will be non-zero in
    // any meaningful random function producing 1024 u8 values.
    assert!(buf.iter().any(|x| *x != 0), "random_get returned all zeros");
}

fn main() {
    // Run the tests.
    test_big_random_buf()
}