1 files changed, 31 insertions, 0 deletions
diff --git a/dom/canvas/test/test_bug856472.html b/dom/canvas/test/test_bug856472.html
new file mode 100644
index 000000000..3ca14d5dc
--- /dev/null
+++ b/dom/canvas/test/test_bug856472.html
@@ -0,0 +1,31 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=856472
+-->
+<head>
+  <title>Test for Bug 856472</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=856472">Mozilla Bug 856472</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script>
+/** Test for Bug 856472 **/
+
+var c = document.createElement("canvas");
+
+var ctx = c.getContext("2d");
+var pattern = ctx.createPattern(c, null);
+pattern.x = 1;
+ctx.fillStyle = pattern;
+is(ctx.fillStyle.x, 1, "CanvasPattern stored as fillstyle drops expandos");
+</script>
+</pre>
+</body>
+</html>