Bug 1153694 - Test.
MozReview-Commit-ID: 5qOnmv0WNZr
new file mode 100644
--- /dev/null
+++ b/layout/reftests/layers/layerize-over-fixed-bg-1.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta charset="utf-8">
+<title></title>
+
+<style>
+
+body {
+ margin: 0;
+ height: 3000px;
+}
+
+.outer {
+ border: 1px solid black;
+ margin: 10px;
+}
+
+.outer > div {
+ margin: 10px;
+}
+
+.fixed-bg {
+ height: 100px;
+ background-image: linear-gradient(lime, lime);
+ background-attachment: fixed;
+}
+
+.inner {
+ border: 1px solid blue;
+ padding: 20px;
+}
+
+</style>
+
+<div class="outer" reftest-assigned-layer="page-background">
+ <!-- .inner and .fixed-bg do not overlap, so .inner should be merged into
+ the same layer as .outer. -->
+ <div class="fixed-bg"></div>
+ <div class="inner" reftest-assigned-layer="page-background"></div>
+</div>
--- a/layout/reftests/layers/reftest.list
+++ b/layout/reftests/layers/reftest.list
@@ -16,8 +16,9 @@ skip-if(!asyncPan) != pull-background-di
skip-if(!asyncPan) != pull-background-displayport-2.html about:blank
skip-if(!asyncPan) != pull-background-displayport-3.html about:blank # fails with non-overlay scrollbars and event regions due to bug 1148515
skip-if(!asyncPan) != pull-background-displayport-4.html about:blank # fails with non-overlay scrollbars and event regions due to bug 1148515
skip-if(!asyncPan) != pull-background-displayport-5.html about:blank
skip-if(!asyncPan) != pull-background-displayport-6.html about:blank # fails with non-overlay scrollbars and event regions due to bug 1148515
fuzzy(2,30150) == opacity-blending.html opacity-blending-ref.html
fuzzy(16,5) == mask-layer-transform.html mask-layer-transform-ref.html
fuzzy-if(gtkWidget,1,17) == forced-bg-color-outside-visible-region.html forced-bg-color-outside-visible-region-ref.html
+!= layerize-over-fixed-bg-1.html about:blank
