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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/web-platform/tests/css/css-position/sticky/position-sticky-offset-overflow.html
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<title>Sticky positioning can cause overflow but must be accessible.</title>
+<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" />
+<meta name="assert" content="This test checks that a sticky positioned element
+does not extend overflow" />
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<style>
+.container {
+ overflow-y: scroll;
+ width: 100px;
+ height: 100px;
+}
+
+.box {
+ background-color: green;
+ height: 50px;
+ width: 50px;
+}
+
+.sticky {
+ position: sticky;
+ top: 200px; /* Forces the sticky position element below the overflow. */
+}
+</style>
+
+<div id="scroller1" class="container">
+ <div class="sticky box"></div>
+</div>
+
+<script>
+test(() => {
+ var scroller = document.getElementById('scroller1');
+ var sticky = scroller.querySelector('.sticky');
+
+ var stickyOffset = sticky.offsetTop -
+ scroller.scrollTop - scroller.offsetTop;
+ assert_equals(stickyOffset, 50);
+ assert_equals(scroller.scrollHeight, 100);
+}, 'sticky position offset should be contained by scrolling box');
+
+</script>