@Test
public void processReturnsGuest() throws Exception {

    Object processItem = new GuestDataProcessor().processItem("id, foo bar, bratzen@putz.de");
    Guest guest = (Guest) processItem;
    assertThat("foo bar", is(equalTo(guest.getName())));
    assertThat("bratzen@putz.de", is(equalTo(guest.getEmail())));
}