testBasicDisplay() {
    simulateAllKeyEventsOnInput(KeyCodes.DOWN);

    /**
     * @suppress {strictMissingProperties} suppression added to enable type
     * checking
     */
    input.value = 'a';
    simulateAllKeyEventsOnInput(KeyCodes.A);
    mockClock.tick(500);

    const nodes = [
      findNodeByInnerText(data[0]),
      findNodeByInnerText(data[1]),
      findNodeByInnerText(data[2]),
    ];
    assert(!!nodes[0]);
    assert(!!nodes[1]);
    assert(!!nodes[2]);
    assert(style.isUnselectable(nodes[0]));
    assert(style.isUnselectable(nodes[1]));
    assert(style.isUnselectable(nodes[2]));

    /**
     * @suppress {strictMissingProperties} suppression added to enable type
     * checking
     */
    input.value = 'aa';
    simulateAllKeyEventsOnInput(KeyCodes.A);
    mockClock.tick(500);

    assertFalse(!!findNodeByInnerText(data[0]));
    assert(!!findNodeByInnerText(data[1]));
    assert(!!findNodeByInnerText(data[2]));
  }
Ensure that the display of the autocompleter works.