    <input type="text" role="combobox" aria-haspopup="grid" aria-expanded="true" aria-autocomplete="list"
                    aria-controls="ex1-grid" id="ex1-input">
            </div>
            <div aria-labelledby="ex1-label" role="grid" id="ex1-grid" class="grid hidden">
            </div>
        </div>
    </main>
    <script>
        UnitTest = {
            ruleIds: ["combobox_autocomplete_valid"],
            results: [{
                "ruleId": "combobox_autocomplete_valid",
                "va