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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/css-scroll-anchoring/negative-layout-overflow.html | |
| parent | Initial commit. (diff) | |
| download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-anchoring/negative-layout-overflow.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-scroll-anchoring/negative-layout-overflow.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/negative-layout-overflow.html b/testing/web-platform/tests/css/css-scroll-anchoring/negative-layout-overflow.html new file mode 100644 index 0000000000..e1ce331f1a --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-anchoring/negative-layout-overflow.html @@ -0,0 +1,44 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<style> + +body { + height: 1200px; +} +#header { + position: relative; + height: 100px; +} +#evil { + position: relative; + top: -900px; + height: 1000px; + width: 100px; +} +#changer { + height: 100px; +} +#anchor { + height: 100px; + background-color: green; +} + +</style> +<div id="header"> + <div id="evil"></div> +</div> +<div id="changer"></div> +<div id="anchor"></div> +<script> + +// Tests that the anchor selection algorithm correctly accounts for negative +// positioning when computing bounds for visibility. + +test(() => { + document.scrollingElement.scrollTop = 250; + document.querySelector("#changer").style.height = "200px"; + assert_equals(document.scrollingElement.scrollTop, 350); +}, "Anchor selection accounts for negative positioning."); + +</script> |