diff -r 000000000000 -r 6474c204b198 addon-sdk/source/examples/reading-data/tests/test-main.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/examples/reading-data/tests/test-main.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* 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";
+
+var m = require("main");
+var self = require("sdk/self");
+
+exports.testReplace = function(test) {
+  var input = "Hello World";
+  var output = m.replaceMom(input);
+  test.assertEqual(output, "Hello Mom");
+  var callbacks = { quit: function() {} };
+
+  // Make sure it doesn't crash...
+  m.main({ staticArgs: {} }, callbacks);
+};
+
+exports.testID = function(test) {
+  // The ID is randomly generated during tests, so we cannot compare it against
+  // anything in particular.  Just assert that it is not empty.
+  test.assert(self.id.length > 0);
+  test.assertEqual(self.data.url("sample.html"),
+                   "resource://reading-data-example-at-jetpack-dot-mozillalabs-dot-com/reading-data/data/sample.html");
+};