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diff --git a/accessible/tests/mochitest/states/test_stale.html b/accessible/tests/mochitest/states/test_stale.html
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+++ b/accessible/tests/mochitest/states/test_stale.html
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+<!DOCTYPE html>
+<html>
+<head>
+  <title>Stale state testing</title>
+  <link rel="stylesheet" type="text/css"
+        href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+
+  <script type="application/javascript"
+          src="../common.js"></script>
+  <script type="application/javascript"
+          src="../role.js"></script>
+  <script type="application/javascript"
+          src="../states.js"></script>
+  <script type="application/javascript"
+          src="../events.js"></script>
+
+  <script type="application/javascript">
+    function addChild(aContainerID) {
+      this.containerNode = getNode(aContainerID);
+      this.childNode = null;
+
+      this.eventSeq = [
+        new invokerChecker(EVENT_REORDER, this.containerNode),
+      ];
+
+      this.invoke = function addChild_invoke() {
+        this.childNode = document.createElement("div");
+        // Note after bug 646216, a sole div without text won't be accessible
+        // and would not result in an embedded character.
+        // Therefore, add some text.
+        this.childNode.textContent = "hello";
+        this.containerNode.appendChild(this.childNode);
+      };
+
+      this.finalCheck = function addChild_finalCheck() {
+        // no stale state should be set
+        testStates(this.childNode, 0, 0, 0, EXT_STATE_STALE);
+      };
+
+      this.getID = function addChild_getID() {
+        return "add child for " + prettyName(aContainerID);
+      };
+    }
+
+    function removeChildChecker(aInvoker) {
+      this.type = EVENT_HIDE;
+      this.__defineGetter__("target", function() { return aInvoker.child; });
+
+      this.check = function removeChildChecker_check() {
+        // stale state should be set
+        testStates(aInvoker.child, 0, EXT_STATE_STALE);
+      };
+    }
+
+    function removeChild(aContainerID) {
+      this.containerNode = getNode(aContainerID);
+      this.child = null;
+
+      this.eventSeq = [
+        new removeChildChecker(this),
+      ];
+
+      this.invoke = function removeChild_invoke() {
+        var childNode = this.containerNode.firstChild;
+        this.child = getAccessible(childNode);
+
+        this.containerNode.removeChild(childNode);
+      };
+
+      this.getID = function removeChild_getID() {
+        return "remove child from " + prettyName(aContainerID);
+      };
+    }
+
+    // gA11yEventDumpToConsole = true; //debugging
+
+    var gQueue = null;
+    function doTest() {
+      gQueue = new eventQueue();
+
+      gQueue.push(new addChild("container"));
+      gQueue.push(new removeChild("container"));
+
+      gQueue.invoke(); // will call SimpleTest.finish()
+    }
+
+    SimpleTest.waitForExplicitFinish();
+    addA11yLoadEvent(doTest);
+  </script>
+</head>
+
+<body role="">
+
+  <a target="_blank"
+     title="Expose stale state on accessibles unattached from tree"
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=676267">Mozilla Bug 676267</a>
+
+  <p id="display"></p>
+  <div id="content" style="display: none"></div>
+  <pre id="test">
+  </pre>
+
+  <div id="container"></div>
+
+</body>
+</html>