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Unified Diff: third_party/WebKit/LayoutTests/compositing/overflow/mixed-composited-nested-sticky-overflow-scroller.html

Issue 2754983002: Composite sticky-positioned elements when they have composited descendants (Closed)
Patch Set: Address chrishtr comment Created 3 years, 7 months ago
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Index: third_party/WebKit/LayoutTests/compositing/overflow/mixed-composited-nested-sticky-overflow-scroller.html
diff --git a/third_party/WebKit/LayoutTests/compositing/overflow/mixed-composited-nested-sticky-overflow-scroller.html b/third_party/WebKit/LayoutTests/compositing/overflow/mixed-composited-nested-sticky-overflow-scroller.html
new file mode 100644
index 0000000000000000000000000000000000000000..72e42ba9d6a55d56bc03cea8bab65748c67cecc6
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/compositing/overflow/mixed-composited-nested-sticky-overflow-scroller.html
@@ -0,0 +1,72 @@
+<style>
+body {
+ margin: 0;
+}
+
+.scroller {
+ overflow: auto;
+ height: 300px;
+ width: 250px;
+}
+
+.container {
+ width: 200px;
+ height: 2000px;
+}
+
+.composited {
+ /* Forces promotion without creating a stacking context. */
+ backface-visibility: hidden;
+}
+
+.outerSticky {
+ position: sticky;
+ top: 50px;
+ background-color: green;
+ width: 200px;
+ height: 200px;
+}
+
+.middleSticky {
+ position: sticky;
+ top: 100px;
+ background-color: yellow;
+ width: 200px;
+ height: 100px;
+}
+
+.innerSticky {
+ position: sticky;
+ top: 125px;
+ background-color: red;
+ width: 200px;
+ height: 50px;
+}
+</style>
+
+<script>
+if (window.testRunner)
+ testRunner.waitUntilDone();
+
+function finishTest() {
+ document.querySelector('.scroller').scrollTop = 200;
+ if (window.testRunner)
+ testRunner.notifyDone();
+}
+
+window.addEventListener('load', function() {
+ requestAnimationFrame(function() {
+ requestAnimationFrame(finishTest);
+ });
+});
+</script>
+
+<div class="scroller">
+ <div class="container">
+ <div class="outerSticky">
+ <div class="middleSticky composited">
+ <div class="innerSticky composited"></div>
+ </div>
+ </div>
+ </div>
+</div>

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