| <iframe id="iframe" style="will-change: transform; position: absolute; top: 0px; left: 0px; height: 100px; width: 100px; background: lightblue"></iframe> |
| <div id="target" style="position: absolute; top: 50px; left: 50px; width: 200px; height: 200px; background: lightgray;"></div> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| onload = function() { |
| test(function() { |
| if (window.internals) { |
| var layer_tree = internals.layerTreeAsText(document); |
| assert_true(layer_tree.includes("id='iframe'"), 'composited iframe'); |
| assert_true(layer_tree.includes("id='target'"), 'should not be squashed into iframe'); |
| } |
| }); |
| }; |
| </script> |
