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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://github.com/whatwg/html/issues/5802">
<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>
<button>button</button>
<dialog>hello world</dialog>
<script>
const dialog = document.querySelector('dialog');
const button = document.querySelector('button');
promise_test(async t => {
dialog.showModal();
let closeFired = false;
let cancelFired = false;
dialog.addEventListener('close', () => closeFired = true);
dialog.addEventListener('cancel', () => cancelFired = true);
dialog.removeAttribute('open');
await new Promise(resolve => t.step_timeout(resolve, 0));
await new Promise(requestAnimationFrame);
assert_false(dialog.matches(':modal'),
'The dialog should not match :modal after closing.');
assert_false(cancelFired,
'The cancel event should not fire when removing the open attribute.');
assert_true(closeFired,
'The close event should be fired when removing the open attribute.');
let buttonFiredClick = false;
button.addEventListener('click', () => buttonFiredClick = true);
await test_driver.click(button);
assert_true(buttonFiredClick,
'The page should not be inert or blocked after removing the open attribute.');
}, 'Removing the open attribute from an open modal dialog should run the closing algorithm.');
promise_test(async t => {
dialog.show();
let closeFired = false;
let cancelFired = false;
dialog.addEventListener('close', () => closeFired = true);
dialog.addEventListener('cancel', () => cancelFired = true);
dialog.removeAttribute('open');
await new Promise(resolve => t.step_timeout(resolve, 0));
await new Promise(requestAnimationFrame);
assert_false(cancelFired,
'The cancel event should not fire when removing the open attribute.');
assert_true(closeFired,
'The close event should be fired when removing the open attribute.');
}, 'Removing the open attribute from an open non-modal dialog should fire a close event.');
</script>
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