@Test
public void location_area_id_can_be_set_and_retrieved() {
Location l = new Location("", "", null, null);
l.setAreaID("area id");
assertEquals("area id", l.areaID());
}
@Test
public void location_area_id_is_blank_on_construction() {
Location l = new Location("", "", null, null);
assertEquals("", l.areaID());
}