Bug 1036851 - Part 3: Add test case for telephony.onready. r=hsiny,khuey

dom/telephony/test/marionette/manifest.ini

@@ -4,6 +4,7 @@ browser = false
 qemu = true
 
 [test_crash_emulator.js]
+[test_ready.js]
 [test_incoming_answer_hangup.js]
 [test_incoming_reject.js]
 [test_outgoing_answer_hangup.js]

dom/telephony/test/marionette/test_ready.js

@@ -0,0 +1,35 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+MARIONETTE_TIMEOUT = 60000;
+
+SpecialPowers.addPermission("telephony", true, document);
+
+function cleanUp() {
+  SpecialPowers.removePermission("telephony", document);
+  finish();
+}
+
+let telephony = window.navigator.mozTelephony;
+ok(telephony);
+
+telephony.onready = function() {
+  log("Receive 'ready' event");
+
+  // Test registering 'ready' event in another window.
+  let iframe = document.createElement("iframe");
+  iframe.addEventListener("load", function load() {
+    iframe.removeEventListener("load", load);
+
+    let iframeTelephony = iframe.contentWindow.navigator.mozTelephony;
+    ok(iframeTelephony);
+
+    iframeTelephony.onready = function() {
+      log("Receive 'ready' event in iframe");
+
+      cleanUp();
+    };
+  });
+
+  document.body.appendChild(iframe);
+};