async function fruitFixture({ autocomplete, matchMode } = {}) {
  const el = /** @type {LionCombobox} */ (
    await fixture(html`
      <lion-combobox name="foo">
        <lion-option .choiceValue="${'Artichoke'}">Artichoke</lion-option>
        <lion-option .choiceValue="${'Chard'}">Chard</lion-option>
        <lion-option .choiceValue="${'Chicory'}">Chicory</lion-option>
        <lion-option .choiceValue="${'Victoria Plum'}">Victoria Plum</lion-option>
      </lion-combobox>
    `)
  );
  if (autocomplete) {
    el.autocomplete = autocomplete;
  }
  if (matchMode) {
    el.matchMode = matchMode;
  }
  await el.updateComplete;
  return [el, el.formElements];
}
@param {{ autocomplete?:'none'|'list'|'both', matchMode?:'begin'|'all' }} config