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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1422275">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<select style="appearance:base-select">
<button type=popover>button</button>
<datalist>
<option class=one>one</option>
<option class=two>two</option>
</datalist>
</select>
<script>
const select = document.querySelector('select');
const datalist = document.querySelector('datalist');
const firstOption = document.querySelector('option.one');
const secondOption = document.querySelector('option.two');
promise_test(async () => {
datalist.showPopover();
assert_true(datalist.matches(':popover-open'));
datalist.hidePopover();
assert_false(datalist.matches(':popover-open'));
}, 'showPopover and hidePopover should work on the select datalist.');
promise_test(async () => {
await test_driver.bless();
select.showPicker();
assert_true(datalist.matches(':popover-open'));
datalist.hidePopover();
}, 'showPicker should show the select datalist.');
promise_test(async () => {
datalist.addEventListener('beforetoggle', event => {
event.preventDefault();
}, {once: true});
await test_driver.bless();
select.showPicker();
assert_false(datalist.matches(':popover-open'));
}, 'preventDefault on beforetoggle should prevent the datalist from showing.');
promise_test(async () => {
select.remove();
assert_throws_dom('InvalidStateError', () => datalist.showPopover());
assert_false(datalist.matches(':popover-open'));
document.body.appendChild(select);
}, 'showPopover on a disconnected datalist should throw an exception.');
promise_test(async () => {
datalist.addEventListener('beforetoggle', event => {
select.remove();
}, {once: true});
await test_driver.bless();
select.showPicker();
assert_false(!!select.parentNode);
assert_false(datalist.matches(':popover-open'));
document.body.appendChild(select);
}, 'Disconnecting while internally showing the datalist should not crash or show the popover.');
promise_test(async () => {
datalist.showPopover();
datalist.addEventListener('beforetoggle', event => {
select.remove();
}, {once: true});
await test_driver.click(secondOption);
assert_false(!!select.parentNode);
assert_false(datalist.matches(':popover-open'));
document.body.appendChild(select);
}, 'Disconnecting while internally hiding the datalist should not crash.');
</script>
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