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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/css-scroll-anchoring/abspos-contributes-to-static-parent-bounds.html
parentInitial commit. (diff)
downloadfirefox-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>
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diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/abspos-contributes-to-static-parent-bounds.html b/testing/web-platform/tests/css/css-scroll-anchoring/abspos-contributes-to-static-parent-bounds.html
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+++ b/testing/web-platform/tests/css/css-scroll-anchoring/abspos-contributes-to-static-parent-bounds.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+
+body, html, #static { height: 0; }
+#abs {
+ position: absolute;
+ left: 50px;
+ top: 50px;
+ height: 1200px;
+ padding: 50px;
+ border: 5px solid gray;
+}
+#anchor {
+ background-color: #afa;
+ width: 100px;
+ height: 100px;
+}
+
+</style>
+<div id="static">
+ <div id="abs">
+ <div id="changer"></div>
+ <div id="anchor"></div>
+ </div>
+</div>
+<script>
+
+// Tests that the "bounds" of an element, for the purpose of visibility in the
+// anchor node selection algorithm, include any space occupied by the element's
+// positioned descendants.
+
+test(() => {
+ document.scrollingElement.scrollTop = 120;
+ document.querySelector("#changer").style.height = "100px";
+ assert_equals(document.scrollingElement.scrollTop, 220);
+}, "Abs-pos with zero-height static parent.");
+
+</script>