| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Scrollable overflow of Document element with 'position: fixed' which has ICB as containing block</title> |
| <link rel="help" href="https://drafts.csswg.org/css-overflow/#scrollable"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollheight"> |
| <link rel="author" title="Jo Steven Novaryo" href="mailto:jo.steven.novaryo@huawei.com"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| </body> |
| <script> |
| promise_test(async (t) => { |
| let initialScrollHeight = document.scrollingElement.scrollHeight; |
| let initialScrollWidth = document.scrollingElement.scrollWidth; |
| |
| let fixedDiv = document.createElement("div"); |
| fixedDiv.style.position = "fixed"; |
| fixedDiv.style.height = (initialScrollHeight * 2) + "px"; |
| fixedDiv.style.width = (initialScrollWidth * 2) + "px"; |
| document.body.appendChild(fixedDiv); |
| |
| assert_equals(document.scrollingElement.scrollHeight, initialScrollHeight); |
| assert_equals(document.scrollingElement.scrollWidth, initialScrollWidth); |
| |
| }, "position: fixed fixed with ICB as CB should not affect scrollable overflow of Document element."); |
| </script> |
| </html> |
