third_party/WebKit/LayoutTests/compositing/iframes/iframe-composited-scrolling-hide-and-show.html

   1 <!DOCTYPE html>
   2 <script src="../../resources/js-test.js"></script>
   3
   4 <style>
   5 iframe {
   6   height: 100px;
   7   width: 100px;
   8 }
   9 </style>
  10
  11 <script>
  12   description('This test makes sure hiding and showing a scrollable iframe ' +
  13               'correctly updates the set of non-fast scrollable rects.');
  14
  15   onload = function() {
  16     if (window.internals) {
  17       var frame = document.getElementById('scrollable-iframe');
  18       document.body.offsetTop; // Force layout
  19       shouldBe('internals.nonFastScrollableRects(document).length', '1');
  20       frame.style.display = 'none';
  21       document.body.offsetTop; // Force layout
  22       shouldBe('internals.nonFastScrollableRects(document).length', '0');
  23       frame.style.display = '';
  24       document.body.offsetTop; // Force layout
  25       shouldBe('internals.nonFastScrollableRects(document).length', '1');
  26     }
  27   }
  28 </script>
  29
  30 <iframe id="scrollable-iframe" src="resources/subframe.html"></iframe>