diff -r 000000000000 -r 6474c204b198 addon-sdk/source/test/addons/symbiont/main.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/test/addons/symbiont/main.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,39 @@
+/* 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 { data } = require("sdk/self");
+const { Symbiont } = require("sdk/deprecated/symbiont");
+
+exports["test:direct communication with trusted document"] = function(assert, done) {
+  let worker = Symbiont({
+    contentURL: data.url("test-trusted-document.html")
+  });
+
+  worker.port.on('document-to-addon', function (arg) {
+    assert.equal(arg, "ok", "Received an event from the document");
+    worker.destroy();
+    done();
+  });
+  worker.port.emit('addon-to-document', 'ok');
+};
+
+exports["test:`addon` is not available when a content script is set"] = function(assert, done) {
+  let worker = Symbiont({
+    contentURL: data.url("test-trusted-document.html"),
+    contentScript: "new " + function ContentScriptScope() {
+      self.port.emit("cs-to-addon", "addon" in unsafeWindow);
+    }
+  });
+
+  worker.port.on('cs-to-addon', function (hasAddon) {
+    assert.equal(hasAddon, false,
+      "`addon` is not available");
+    worker.destroy();
+    done();
+  });
+};
+
+require("sdk/test/runner").runTestsFromModule(module);