diff --git a/accessible/tests/mochitest/common.js b/accessible/tests/mochitest/common.js
index 01ea3b0a036..78f87815944 100644
--- a/accessible/tests/mochitest/common.js
+++ b/accessible/tests/mochitest/common.js
@@ -661,6 +661,23 @@ function shortenString(aString, aMaxLength)
     aString.substring(aString.length - trimOffset, aString.length);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// General Utils
+////////////////////////////////////////////////////////////////////////////////
+/**
+ * Return main chrome window (crosses chrome boundary)
+ */
+function getMainChromeWindow(aWindow)
+{
+  return aWindow.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
+                .getInterface(Components.interfaces.nsIWebNavigation)
+                .QueryInterface(Components.interfaces.nsIDocShellTreeItem)
+                .rootTreeItem
+                .QueryInterface(Components.interfaces.nsIInterfaceRequestor)
+                .getInterface(Components.interfaces.nsIDOMWindow);
+}
+
+
 ////////////////////////////////////////////////////////////////////////////////
 // Private
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/accessible/tests/mochitest/jsat/Makefile.in b/accessible/tests/mochitest/jsat/Makefile.in
index 8747591f3f2..6e5a9b84a43 100644
--- a/accessible/tests/mochitest/jsat/Makefile.in
+++ b/accessible/tests/mochitest/jsat/Makefile.in
@@ -12,6 +12,8 @@ relativesrcdir = @relativesrcdir@
 include $(DEPTH)/config/autoconf.mk
 
 MOCHITEST_A11Y_FILES =\
+jsatcommon.js \
+test_alive.html \
 test_utterance_order.html \
 $(NULL)
 
diff --git a/accessible/tests/mochitest/jsat/jsatcommon.js b/accessible/tests/mochitest/jsat/jsatcommon.js
new file mode 100644
index 00000000000..1842c1b5314
--- /dev/null
+++ b/accessible/tests/mochitest/jsat/jsatcommon.js
@@ -0,0 +1,91 @@
+// A common module to run tests on the AccessFu module
+
+/**
+  * A global variable holding an array of test functions.
+  */
+var gTestFuncs = [];
+/**
+  * A global Iterator for the array of test functions.
+  */
+var gIterator;
+
+Components.utils.import('resource://gre/modules/Services.jsm');
+Components.utils.import("resource://gre/modules/accessibility/Utils.jsm");
+Components.utils.import("resource://gre/modules/accessibility/EventManager.jsm");
+
+var AccessFuTest = {
+
+  addFunc: function AccessFuTest_addFunc(aFunc) {
+    if (aFunc) {
+      gTestFuncs.push(aFunc);
+    }
+  },
+
+  _waitForExplicitFinish: false,
+
+  waitForExplicitFinish: function AccessFuTest_waitForExplicitFinish() {
+    this._waitForExplicitFinish = true;
+  },
+
+  finish: function AccessFuTest_finish() {
+    // Disable the console service logging.
+    Logger.test = false;
+    AccessFu.doneCallback = function doneCallback() {
+      // This is being called once AccessFu has been shut down.
+      // Detach AccessFu from everything it attached itself to.
+      AccessFu.detach();
+      // and finish the test run.
+      SimpleTest.finish();
+    };
+    // Tear down accessibility and make AccessFu stop.
+    SpecialPowers.setIntPref("accessibility.accessfu.activate", 0);
+  },
+
+  nextTest: function AccessFuTest_nextTest() {
+    var testFunc;
+    try {
+      // Get the next test function from the iterator. If none left,
+      // StopIteration exception is thrown.
+      testFunc = gIterator.next()[1];
+    } catch (ex) {
+      // StopIteration exception.
+      this.finish();
+      return;
+    }
+    testFunc();
+  },
+
+  runTests: function AccessFuTest_runTests() {
+    if (gTestFuncs.length === 0) {
+      ok(false, "No tests specified!");
+      simpleTest.finish();
+      return;
+    }
+
+    // Create an Iterator for gTestFuncs array.
+    gIterator = Iterator(gTestFuncs);
+
+    // Start AccessFu and put it in stand-by.
+    Components.utils.import("resource://gre/modules/accessibility/AccessFu.jsm");
+
+    AccessFu.attach(getMainChromeWindow(window));
+
+    AccessFu.readyCallback = function readyCallback() {
+      // Enable logging to the console service.
+      Logger.test = true;
+      // This is being called once accessibility has been turned on.
+
+      if (AccessFuTest._waitForExplicitFinish) {
+        // Run all test functions asynchronously.
+        AccessFuTest.nextTest();
+      } else {
+        // Run all test functions synchronously.
+        [testFunc() for (testFunc of gTestFuncs)];
+        AccessFuTest.finish();
+      }
+    };
+
+    // Invoke the whole thing.
+    SpecialPowers.setIntPref("accessibility.accessfu.activate", 1);
+  }
+};
diff --git a/accessible/tests/mochitest/jsat/test_alive.html b/accessible/tests/mochitest/jsat/test_alive.html
new file mode 100644
index 00000000000..2b4b751971d
--- /dev/null
+++ b/accessible/tests/mochitest/jsat/test_alive.html
@@ -0,0 +1,81 @@
+<html>
+
+<head>
+  <title>AccessFu test for enabling</title>
+
+  <link rel="stylesheet" type="text/css"
+        href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="application/javascript"
+          src="../common.js"></script>
+  <script type="application/javascript"
+          src="./jsatcommon.js"></script>
+  <script type="application/javascript">
+
+    function confirmAccessFuStart() {
+      ok(AccessFu._enabled, "AccessFu was started and enabled.");
+      AccessFuTest.nextTest();
+    }
+
+    function makeEventManagerListener(waitForMessage, callback) {
+      return {
+        observe: function observe(aMessage) {
+          // Ignore unexpected messages.
+          if (!(aMessage instanceof Components.interfaces.nsIConsoleMessage)) {
+            return;
+          }
+          if (aMessage.message.indexOf(waitForMessage) < 0) {
+            return;
+          }
+          Services.console.unregisterListener(this);
+          callback();
+        }
+      };
+    }
+
+    function testEventManagerStartStop() {
+      // Firs listen for initial 'EventManager.start' and disable AccessFu.
+      var initialStartListener = makeEventManagerListener("EventManager.start",
+        function () {
+          ok(EventManager._started, "EventManager was started.");
+          Services.console.registerListener(stopListener);
+          AccessFu._disable();
+        });
+      // Listen for 'EventManager.stop' and enable AccessFu again.
+      var stopListener = makeEventManagerListener("EventManager.stop",
+        function () {
+          isnot(EventManager._started, true, "EventManager was stopped.");
+          Services.console.registerListener(finalStartListener);
+          AccessFu._enable();
+        });
+      // Make sure EventManager is started again.
+      var finalStartListener = makeEventManagerListener("EventManager.start",
+        function () {
+          ok(EventManager._started, "EventManager was started again.");
+          AccessFuTest.finish();
+        });
+
+      Services.console.registerListener(initialStartListener);
+    }
+
+    function doTest() {
+      AccessFuTest.addFunc(confirmAccessFuStart);
+      AccessFuTest.addFunc(testEventManagerStartStop);
+      AccessFuTest.waitForExplicitFinish();
+      AccessFuTest.runTests();  // Will call SimpleTest.finish();
+    }
+
+    SimpleTest.waitForExplicitFinish();
+    addA11yLoadEvent(doTest);
+  </script>
+
+</head>
+<body>
+  <a target="_blank"
+     href="https://bugzilla.mozilla.org/show_bug.cgi?id=811307"
+     title="[AccessFu] Add mochitest for enabling">
+    Mozilla Bug 811307
+  </a>
+</body>
+</html>
\ No newline at end of file