diff options
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-anchoring/anchoring-with-bounds-clamping-div.html')
-rw-r--r-- | testing/web-platform/tests/css/css-scroll-anchoring/anchoring-with-bounds-clamping-div.html | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/anchoring-with-bounds-clamping-div.html b/testing/web-platform/tests/css/css-scroll-anchoring/anchoring-with-bounds-clamping-div.html new file mode 100644 index 0000000000..3de725e683 --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-anchoring/anchoring-with-bounds-clamping-div.html @@ -0,0 +1,38 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<style> + +#scroller { + height: 500px; + width: 200px; + overflow: scroll; +} +#changer { height: 1500px; } +#anchor { + width: 150px; + height: 1000px; + overflow: scroll; +} + +</style> +<div id="scroller"> + <div id="changer"></div> + <div id="anchor"></div> +</div> +<script> + +// Test that scroll anchoring interacts correctly with scroll bounds clamping +// inside a scrollable <div> element. +// +// There should be no visible jump even if the content shrinks such that the +// new max scroll position is less than the previous scroll position. + +test(() => { + var scroller = document.querySelector("#scroller"); + scroller.scrollTop = 1600; + document.querySelector("#changer").style.height = "0"; + assert_equals(scroller.scrollTop, 100); +}, "Anchoring combined with scroll bounds clamping in a <div>."); + +</script> |