new RoomInformation((OldRoom) null);
new RoomInformation((Room) null);
    public void testRoomInformationConstructor() {        try {            new RoomInformation((OldRoom) null);            fail("Expected a NullPointerException: room information must be relative to a room.");        } catch (NullPointerException ex) {            assertEquals("error.room.cannot.be.null", ex.getMessage());        }        final OldBuilding building = new OldBuilding("building1");        final OldRoom room = new OldRoom(building);        final RoomInformation roomInformation = (RoomInformation) room.getSpaceInformation();        assertSame(room, roomInformation.getSpace());        final RoomInformation newRoomInformation = new RoomInformation(room);        assertSame(room, newRoomInformation.getSpace());        assertSame(room, roomInformation.getSpace());        assertEquals(new YearMonthDay(), roomInformation.getValidUntil());        assertNull(newRoomInformation.getValidUntil());    }