| <!DOCTYPE html> <!-- webkit-test-runner [ MockScrollbarsEnabled=false AsyncOverflowScrollingEnabled=true ] --> |
| <html> |
| <head> |
| <meta name="color-scheme" content="light dark"> |
| <style> |
| body { |
| background-color: white; |
| } |
| |
| .scroller { |
| width: 400px; |
| height: 450px; |
| border: 2px solid black; |
| overflow: scroll; |
| } |
| |
| .contents { |
| height: 300%; |
| } |
| </style> |
| <script src="../../../resources/ui-helper.js"></script> |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| if (window.internals) { |
| internals.settings.setUseDarkAppearance(true); |
| internals.setUsesOverlayScrollbars(true); |
| } |
| |
| async function runTest() |
| { |
| if (!testRunner.runUIScript) |
| return; |
| |
| let scroller = document.querySelector('.scroller'); |
| |
| // Trigger scrollbar display. |
| scroller.scrollTop = 10; |
| // Ensure scrollbar is drawn once. |
| await UIHelper.ensureStablePresentationUpdate(); |
| |
| internals.settings.setUseDarkAppearance(false); |
| // Trigger scrollbar display. |
| scroller.scrollTop = 20; |
| |
| testRunner.notifyDone(); |
| } |
| |
| window.addEventListener('load', runTest, false); |
| </script> |
| </head> |
| <body> |
| <div class="scroller"> |
| <div class="contents"> |
| </div> |
| </div> |
| </body> |
| </html> |
