exceed-then-not-exceed.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /html/rendering/non-replaced-elements/the-frameset-and-frame-elements/exceed-then-not-exceed.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

promise_test(async () => {

  await new Promise(resolve => document.addEventListener('DOMContentLoaded', resolve, {once:true}));

  await new Promise(resolve => requestAnimationFrame(resolve));

  await new Promise(resolve => requestAnimationFrame(resolve));

  // #fs1, #container, and #child were laid out.

  // Move #child.

  // It makes #container dirty, and it exceeds from #fs1's 1x1 grid.

  document.querySelector('#fs1').insertBefore(

      document.querySelector('#child'), document.querySelector('#container'));

  await new Promise(resolve => requestAnimationFrame(resolve));

  await new Promise(resolve => requestAnimationFrame(resolve));

  // Removing #child makes #container visible again.

  document.querySelector('#child').remove();

  await new Promise(resolve => requestAnimationFrame(resolve));

  await new Promise(resolve => requestAnimationFrame(resolve));

}, 'No crash when a dirty FRAMESET exceeds from the grid then fits in it again');

</script>

</head>

<frameset id="fs1">

<frameset id="container">

<frameset id="child"></frameset>

</frameset>

</frameset>

</html>