diff -r 000000000000 -r 6474c204b198 dom/telephony/test/marionette/test_incoming_remote_cancel.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/telephony/test/marionette/test_incoming_remote_cancel.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+MARIONETTE_TIMEOUT = 60000;
+MARIONETTE_HEAD_JS = 'head.js';
+
+let inNumber = "5555551111";
+let incomingCall;
+
+function simulateIncoming() {
+  log("Simulating an incoming call.");
+
+  telephony.onincoming = function onincoming(event) {
+    log("Received 'incoming' call event.");
+    incomingCall = event.call;
+    ok(incomingCall);
+    is(incomingCall.number, inNumber);
+    is(incomingCall.state, "incoming");
+
+    is(telephony.calls.length, 1);
+    is(telephony.calls[0], incomingCall);
+
+    emulator.run("gsm list", function(result) {
+      log("Call list is now: " + result);
+      is(result[0], "inbound from " + inNumber + " : incoming");
+      is(result[1], "OK");
+      cancelIncoming();
+    });
+  };
+  emulator.run("gsm call " + inNumber);
+}
+
+function cancelIncoming(){
+  log("Remote party cancelling call before it is answered.");
+
+  // We get no 'disconnecting' event when remote party cancels/hangs-up call
+
+  incomingCall.ondisconnected = function ondisconnected(event) {
+    log("Received 'disconnected' call event.");
+    is(incomingCall, event.call);
+    is(incomingCall.state, "disconnected");
+
+    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();
+    });
+  };
+  emulator.run("gsm cancel " + inNumber);
+}
+
+function cleanUp() {
+  telephony.onincoming = null;
+  finish();
+}
+
+startTest(function() {
+  simulateIncoming();
+});