1 files changed, 50 insertions, 0 deletions
diff --git a/layout/reftests/invalidation/mask-invalidation-2d.html b/layout/reftests/invalidation/mask-invalidation-2d.html
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index 0000000000..5fa5d96270
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+++ b/layout/reftests/invalidation/mask-invalidation-2d.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+  <head>
+    <meta charset="utf-8">
+    <title>CSS Masking: mask invalidation.</title>
+    <style type="text/css">
+      div.outer {
+        position: absolute;
+        background-color: purple;
+        border: solid purple;
+        width: 200px;
+        height: 200px;
+      }
+
+      div.mask {
+        mask-image: url(#m1);
+      }
+
+      div.inner {
+        width: 5px;
+        height: 5px;
+        border: 1px solid transparent;
+        will-change: transform;
+      }
+
+    </style>
+  </head>
+  <body>
+    <div id="d1" class="outer mask"><div class="inner"></div></div>
+    <script type="text/javascript">
+      function changeMask()
+      {
+        document.getElementById("r1").setAttribute("width", "50");
+        document.getElementById("r1").setAttribute("height", "50");
+        document.getElementById("r1").setAttribute("x", "100");
+        document.getElementById("r1").setAttribute("y", "100");
+
+        document.documentElement.removeAttribute("class");
+      }
+
+      document.addEventListener("MozReftestInvalidate",
+                                changeMask);
+    </script>
+    <svg height="0">
+      <mask id="m1" x="0" y="0" width="1" height="1">
+        <rect id="r1" x="50" y="50" width="100" height="100" style="stroke:none; fill: #ffffff;"/>
+      </mask>
+    </svg>
+  </body>
+</html>