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Diffstat (limited to 'testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-after-scroll-in.html')
-rw-r--r-- | testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-after-scroll-in.html | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-after-scroll-in.html b/testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-after-scroll-in.html new file mode 100644 index 0000000000..f13c500915 --- /dev/null +++ b/testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-after-scroll-in.html @@ -0,0 +1,64 @@ +<!DOCTYPE html> +<html class=reftest-wait> +<meta charset="utf-8"> +<meta name="assert" content="Scrolling an anchor in to view should cause a position-visibility: anchors-visible element to appear." /> +<title>CSS Anchor Positioning Test: position-visibility: anchors-visible</title> +<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#position-visibility"> +<link rel="match" href="position-visibility-anchors-visible-after-scroll-in-ref.html"> +<script src="/common/reftest-wait.js"></script> +<script src="/common/rendering-utils.js"></script> +<style> + #scroll-container { + overflow: hidden scroll; + width: 300px; + height: 100px; + } + + #anchor { + anchor-name: --a1; + width: 100px; + height: 100px; + background: orange; + } + + #spacer { + height: 100px; + } + + #target { + position-anchor: --a1; + position-visibility: anchors-visible; + inset-area: block-end; + width: 100px; + height: 100px; + background: green; + position: absolute; + top: 0; + left: 0; + } +</style> + +<div id="scroll-container"> + <div id="anchor">anchor</div> + <div id="spacer"></div> + <div id="target">target</div> +</div> + +<script> + // #target should be initially visible because it is anchored to #anchor, + // which is visible. + waitForAtLeastOneFrame().then(() => { + // Scroll #anchor out of view. + const scroller = document.getElementById('scroll-container'); + scroller.scrollTop = 100; + // #target should now be invisible. + + waitForAtLeastOneFrame().then(() => { + // Scroll #anchor back into view. + scroller.scrollTop = 0; + + // #target should now be visible again. + takeScreenshot(); + }); + }); +</script> |