diff -r 000000000000 -r 6474c204b198 dom/telephony/test/marionette/test_incoming_answer_hangup.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/telephony/test/marionette/test_incoming_answer_hangup.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,100 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+MARIONETTE_TIMEOUT = 60000;
+MARIONETTE_HEAD_JS = 'head.js';
+
+let number = "5555552368";
+let incoming;
+let calls;
+
+function simulateIncoming() {
+  log("Simulating an incoming call.");
+
+  telephony.onincoming = function onincoming(event) {
+    log("Received 'incoming' call event.");
+    incoming = event.call;
+    ok(incoming);
+    is(incoming.number, number);
+    is(incoming.state, "incoming");
+
+    //ok(telephony.calls === calls); // bug 717414
+    is(telephony.calls.length, 1);
+    is(telephony.calls[0], incoming);
+
+    emulator.run("gsm list", function(result) {
+      log("Call list is now: " + result);
+      is(result[0], "inbound from " + number + " : incoming");
+      is(result[1], "OK");
+      answer();
+    });
+  };
+  emulator.run("gsm call " + number);
+}
+
+function answer() {
+  log("Answering the incoming call.");
+
+  let gotConnecting = false;
+  incoming.onconnecting = function onconnecting(event) {
+    log("Received 'connecting' call event.");
+    is(incoming, event.call);
+    is(incoming.state, "connecting");
+    gotConnecting = true;
+  };
+
+  incoming.onconnected = function onconnected(event) {
+    log("Received 'connected' call event.");
+    is(incoming, event.call);
+    is(incoming.state, "connected");
+    ok(gotConnecting);
+
+    is(incoming, telephony.active);
+
+    emulator.run("gsm list", function(result) {
+      log("Call list is now: " + result);
+      is(result[0], "inbound from " + number + " : active");
+      is(result[1], "OK");
+      hangUp();
+    });
+  };
+  incoming.answer();
+}
+
+function hangUp() {
+  log("Hanging up the incoming call.");
+
+  let gotDisconnecting = false;
+  incoming.ondisconnecting = function ondisconnecting(event) {
+    log("Received 'disconnecting' call event.");
+    is(incoming, event.call);
+    is(incoming.state, "disconnecting");
+    gotDisconnecting = true;
+  };
+
+  incoming.ondisconnected = function ondisconnected(event) {
+    log("Received 'disconnected' call event.");
+    is(incoming, event.call);
+    is(incoming.state, "disconnected");
+    ok(gotDisconnecting);
+
+    is(telephony.active, null);
+    is(telephony.calls.length, 0);
+
+    emulator.run("gsm list", function(result) {
+      log("Call list is now: " + result);
+      is(result[0], "OK");
+      cleanUp();
+    });
+  };
+  incoming.hangUp();
+}
+
+function cleanUp() {
+  telephony.onincoming = null;
+  finish();
+}
+
+startTest(function() {
+  simulateIncoming();
+});