@Override
    public int onPostRequest(Integer notificationId) {
        return postNotification(notificationId);
    }
@Test
    public void onPostRequest_emptyData_postNotification() throws Exception {
        PushNotification uut = createUUT(new Bundle());
        uut.onPostRequest(null);

        verify(mNotificationManager, never()).notify(anyInt(), any(Notification.class));
    }