diff -r 000000000000 -r 6474c204b198 addon-sdk/source/test/addons/preferences-branch/lib/main.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/test/addons/preferences-branch/lib/main.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* 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';
+
+const { id, preferencesBranch } = require('sdk/self');
+const simple = require('sdk/simple-prefs');
+const service = require('sdk/preferences/service');
+const { AddonManager } = require('chrome').Cu.import('resource://gre/modules/AddonManager.jsm');
+
+exports.testPreferencesBranch = function(assert) {
+  assert.equal(preferencesBranch, 'human-readable', 'preferencesBranch is human-readable');
+
+  assert.equal(simple.prefs.test42, true, 'test42 is true');
+
+  simple.prefs.test43 = 'movie';
+  assert.equal(service.get('extensions.human-readable.test43'), 'movie', 'test43 is a movie');
+
+}
+
+// from `/test/test-self.js`, adapted to `sdk/test/assert` API
+exports.testSelfID = function(assert, done) {
+
+  assert.equal(typeof(id), 'string', 'self.id is a string');
+  assert.ok(id.length > 0, 'self.id not empty');
+
+  AddonManager.getAddonByID(id, function(addon) {
+    assert.ok(addon, 'found addon with self.id');
+    done();
+  });
+
+}
+
+require('sdk/test/runner').runTestsFromModule(module);