commit cee5e0928ca86fdba20bf60606caaf08cf667369
parent 241caedcaced700ff52f526ad987ddea5b539446
Author: Timothy Nikkel <tnikkel@gmail.com>
Date: Mon, 1 Dec 2025 14:40:36 +0000
Bug 2003128. Add test for the simpler testcase of bug 1999954 (scroll plus anchor not redrawing). r=layout-reviewers,dshin
Differential Revision: https://phabricator.services.mozilla.com/D274479
Diffstat:
3 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/layout/reftests/scrolling/anchor-scroll-01.html b/layout/reftests/scrolling/anchor-scroll-01.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html class="reftest-no-flush reftest-wait" reftest-no-sync-layers>
+<style>
+body {
+ margin: 0;
+}
+</style>
+
+<div style="position: absolute; left: 0; top: 0;">
+ <div id="scroller" style="position: absolute; overflow: auto; scrollbar-width: none; width: 100px; height: 100px;">
+ <div style="width: 1px; height: 50px;"></div>
+ <div style="width: 50px; height: 50px; background: blue; anchor-name: --my-anchor;"></div>
+ <div style="width: 1px; height: 500px;"></div>
+ </div>
+ <div style="position: absolute; position-anchor: --my-anchor; width: 50px; height: 50px; background: yellow; left: anchor(right); top: anchor(bottom); position-visibility: always;">
+</div>
+
+
+<script>
+window.addEventListener("MozReftestInvalidate", async () => {
+ scroller.scrollTop = 5;
+ document.documentElement.classList.remove("reftest-wait");
+});
+</script>
+</html>
diff --git a/layout/reftests/scrolling/anchor-scroll-ref.html b/layout/reftests/scrolling/anchor-scroll-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+<style>
+body {
+ margin: 0;
+}
+</style>
+
+<div style="width: 50px; height: 50px; background: blue; position: absolute; top: 45px; left: 0px;"></div>
+<div style="width: 50px; height: 50px; background: yellow; position: absolute; top: 95px; left: 50px;"></div>
+
+</html>
diff --git a/layout/reftests/scrolling/reftest.list b/layout/reftests/scrolling/reftest.list
@@ -142,3 +142,5 @@ pref(layout.disable-pixel-alignment,true) fuzzy-if(Android||cocoaWidget,255-255,
fuzzy-if(Android,54-54,8-29) == xul-scrollbar-iterate.html xul-scrollbar-iterate-ref.html
== scrollbars-area-in-iframe.html scrollbars-area-in-iframe-ref.html
+
+pref(image.testing.decode-sync.enabled,false) == anchor-scroll-01.html anchor-scroll-ref.html
