1 files changed, 41 insertions, 0 deletions
diff --git a/layout/reftests/invalidation/background-position-1.html b/layout/reftests/invalidation/background-position-1.html
new file mode 100644
index 0000000000..c5d296b008
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+++ b/layout/reftests/invalidation/background-position-1.html
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+<!DOCTYPE html>
+<html lang="en" class="reftest-wait">
+<meta charset="utf-8">
+<title>Changes to background-position should not cause things to repaint that don't intersect the background image.</title>
+
+<style>
+
+body {
+  margin: 0;
+}
+
+#background {
+  height: 512px;
+  background-image: url(image_rgrg-256x256.png);
+  background-repeat: no-repeat;
+  background-position: 300px 50px;
+}
+
+#not-intersecting-background {
+  box-sizing: border-box;
+  width: 200px;
+  height: 200px;
+  margin: 50px;
+  border: 1px solid lime;
+}
+
+</style>
+
+<div id="background">
+  <div id="not-intersecting-background" class="reftest-no-paint"></div>
+</div>
+
+<script>
+
+function doTest() {
+  document.querySelector("#background").style.backgroundPosition = "300px 100px";
+  document.documentElement.removeAttribute("class");
+}
+document.addEventListener("MozReftestInvalidate", doTest);
+
+</script>