| <!DOCTYPE html> <!-- webkit-test-runner [ useFlexibleViewport=true internal:AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <meta name="viewport" content="initial-scale=1.0"> |
| <style> |
| #scroller { |
| margin: 10px; |
| height: 300px; |
| width: 300px; |
| border: 1px solid black; |
| overflow: scroll; |
| } |
| |
| .box { |
| position: relative; |
| z-index: 0; /* stacking context ancestor is the root */ |
| top: 250px; |
| width: 200px; |
| height: 200px; |
| background-color: blue; |
| } |
| |
| .scroll-content { |
| height: 2000px; |
| } |
| </style> |
| <script src="../../resources/ui-helper.js"></script> |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| async function doTest() |
| { |
| await UIHelper.ensurePresentationUpdate(); // Not sure why this is necessary, but it is. |
| scroller.scrollTo(0, 250); |
| await UIHelper.ensurePresentationUpdate(); |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <div id="scroller"> |
| <div class="scroll-content"> |
| <div class="box"></div> |
| </div> |
| </div> |
| </body> |
| </html> |
