async fn case_async() {
    let mut vec = vec![0usize; 5];
    assert_eq!(vec.len(), 5);
    assert!(vec.capacity() >= 5);

    section!("resizing bigger changes size and capacity", {
        vec.resize(10, 0);
        assert_eq!(vec.len(), 10);
        assert!(vec.capacity() >= 5);
    });
}