@UsingDataSet({ "conference.yml", "session.yml" })
@ShouldMatchDataSet({ "conference.yml", "session_empty.yml" })
public void shouldBeAbleToRemoveConferenceWithSession() {
Conference conference = repository.get("CA");
Session session = conference.getSessions().toArray(new Session[0])[0];
conference.removeSession(session);
repository.store(conference);
}