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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/layout-instability/ignore-fixed-and-sticky.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/layout-instability/ignore-fixed-and-sticky.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/ignore-fixed-and-sticky.html | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/ignore-fixed-and-sticky.html b/testing/web-platform/tests/layout-instability/ignore-fixed-and-sticky.html new file mode 100644 index 0000000000..2023dafbe0 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/ignore-fixed-and-sticky.html @@ -0,0 +1,54 @@ +<!DOCTYPE html> +<title>Layout Instability: ignore fixed and sticky positioning</title> +<link rel="help" href="https://wicg.github.io/layout-instability/" /> +<style> + +body { height: 2000px; } +#f1, #f2 { + position: fixed; + width: 300px; + height: 100px; + left: 100px; + background: yellow; +} +#f1 { top: 0; } +#f2 { top: 150px; will-change: transform; } +#s1 { + position: sticky; + width: 200px; + height: 100px; + left: 450px; + top: 0; + background: blue; +} + +</style> +<div id='f1'>fixed</div> +<div id='f2'>fixed composited</div> +<div id='s1'>sticky</div> +normal + +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/util.js"></script> +<script> + +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Scroll down by 50px. + document.scrollingElement.scrollTop = 50; + + // Force a layout. + document.body.style.height = "2500px"; + + // No layout shift should occur as a result of the scroll-triggered + // repositioning of fixed and sticky elements. + await waitForAnimationFrames(3); + assert_equals(watcher.score, 0); +}, 'Ignore fixed and sticky.'); + +</script> |