diff -r 000000000000 -r 6474c204b198 browser/metro/base/tests/mochitest/browser_inputsource.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/metro/base/tests/mochitest/browser_inputsource.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,50 @@
+// -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/*=============================================================================
+  Test cases
+=============================================================================*/
+
+function test() {
+  runTests();
+}
+
+function setUp() {
+  yield addTab("about:blank");
+}
+
+function testState(aState) {
+  let bcastValue = document.getElementById("bcast_preciseInput").getAttribute("input");
+  is(bcastValue, aState, "bcast attribute is " + aState);
+
+  if (aState == "precise") {
+    ok(InputSourceHelper.isPrecise, "InputSourceHelper");
+    let uri = Util.makeURI("chrome://browser/content/cursor.css");
+    ok(!StyleSheetSvc.sheetRegistered(uri, Ci.nsIStyleSheetService.AGENT_SHEET), "cursor stylesheet registered");
+  } else {
+    ok(!InputSourceHelper.isPrecise, "InputSourceHelper");
+    let uri = Util.makeURI("chrome://browser/content/cursor.css");
+    ok(StyleSheetSvc.sheetRegistered(uri, Ci.nsIStyleSheetService.AGENT_SHEET), "cursor stylesheet registered");
+  }
+}
+
+
+gTests.push({
+  desc: "precise/imprecise input switcher",
+  setUp: setUp,
+  run: function () {
+    notifyPrecise();
+    testState("precise");
+    notifyImprecise();
+    testState("imprecise");
+    notifyPrecise();
+    testState("precise");
+    notifyImprecise();
+    testState("imprecise");
+  }
+});
+