diff options
| 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/scroll-animations/css/scroll-timeline-sampling.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/scroll-animations/css/scroll-timeline-sampling.html')
| -rw-r--r-- | testing/web-platform/tests/scroll-animations/css/scroll-timeline-sampling.html | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/testing/web-platform/tests/scroll-animations/css/scroll-timeline-sampling.html b/testing/web-platform/tests/scroll-animations/css/scroll-timeline-sampling.html new file mode 100644 index 0000000000..1fe354edfd --- /dev/null +++ b/testing/web-platform/tests/scroll-animations/css/scroll-timeline-sampling.html @@ -0,0 +1,46 @@ +<!DOCTYPE html> +<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#avoiding-cycles"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/web-animations/testcommon.js"></script> +<style> + #scroller { + overflow: hidden; + width: 100px; + height: 100px; + scroll-timeline: timeline; + } + #contents { + height: 200px; + } + @keyframes expand { + from { width: 100px; } + to { width: 200px; } + } + #element { + width: 0px; + animation: expand 10s linear; + animation-timeline: timeline; + } + /* Ensure stable expectations if feature is not supported */ + @supports not (animation-timeline:foo) { + #element { animation-play-state: paused; } + } +</style> +<div id=scroller> + <div id=contents></div> +</div> +<div id=element></div> +<script> + promise_test(async (t) => { + // The scroll timeline is initially inactive until the first frame. + assert_equals(getComputedStyle(element).width, '0px'); + await waitForNextFrame(); + scroller.scrollTop = 50; + // Scrolling position should not yet be reflected in the animation, + // since the new scroll position has not yet been sampled. + assert_equals(getComputedStyle(element).width, '100px'); + await waitForNextFrame(); + assert_equals(getComputedStyle(element).width, '150px'); + }, 'Scroll position is sampled once per frame'); +</script> |