diff -r 000000000000 -r 6474c204b198 services/sync/tests/unit/test_notifications.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/services/sync/tests/unit/test_notifications.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+Cu.import("resource://services-sync/notifications.js");
+
+function run_test() {
+  var logStats = initTestLogging("Info");
+
+  var blah = 0;
+
+  function callback(i) {
+    blah = i;
+  }
+
+  let button = new NotificationButton("label", "accessKey", callback);
+
+  button.callback(5);
+
+  do_check_eq(blah, 5);
+  do_check_eq(logStats.errorsLogged, 0);
+
+  function badCallback() {
+    throw new Error("oops");
+  }
+
+  button = new NotificationButton("label", "accessKey", badCallback);
+
+  try {
+    button.callback();
+  } catch (e) {
+    do_check_eq(e.message, "oops");
+  }
+
+  do_check_eq(logStats.errorsLogged, 1);
+}