| <!DOCTYPE html> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1" /> |
| <link rel="stylesheet" href="resources/simple-snap.css"> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <script src="../../../resources/gesture-util.js"></script> |
| |
| <div id="scroller" style="width: 400px; height: 400px; overflow: scroll"> |
| <div id="space" style="width: 400px; height: 2000px"></div> |
| </div> |
| |
| <script> |
| var scroller = document.getElementById("scroller"); |
| |
| function scrollTop() { |
| return scroller.scrollTop; |
| } |
| |
| promise_test (async () => { |
| scroller.scrollTo(0, 0); |
| scroller.scrollTo({top: 1500, behavior: 'smooth'}); |
| scroller.style.height = "1000px"; |
| await waitForAnimationEnd(scrollTop, 500, 15); |
| var expected = 2000 - scroller.clientHeight; |
| assert_equals(scroller.scrollTop, expected); |
| }, "Clamps the scroll offset if the scroller's size is changed during animation."); |
| |
| </script> |
