@Test
public void testFindWorldEntityByOriginId() {
final WorldEntityDAO dao = new WorldEntityDAO();
assertTrue(dao.retrieveAllWorldEntities().size() == 0);
assertTrue(dao.newWorldEntityOf(this.world1).isPresent());
assertTrue(dao.newWorldEntityOf(this.world2).isPresent());
assertTrue(dao.newWorldEntityOf(this.world3).isPresent());
assertTrue(dao.newWorldEntityOf(this.world4).isPresent());
assertTrue(dao.retrieveAllWorldEntities().size() == 4);
assertTrue(dao.findWorldEntityByOriginId(2000).isPresent());
assertEquals(dao.findWorldEntityById(4).get(), dao.findWorldEntityByOriginId(2000).get());