(*

 * ExtLib Testing Suite

 * Copyright (C) 2004 Janne Hellsten

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version,

 * with the special exception on linking described in file LICENSE.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *)

let test_simple () = 

  for i = 1 to 5 do

    let rec make_lst accu n = 

      if n < i then make_lst (i::accu) (n+1)

      else accu in

    let lst = make_lst [] 0 in

    let dlst = Dllist.of_list lst in

    assert (List.length lst = Dllist.length dlst);

    List.iter 

      (fun e -> 

         let dl_elem = Dllist.get dlst in

         assert (e = dl_elem);

         Dllist.remove dlst) lst;

  done

(* Failure case reported by Christopher Wedman on extlib mailing list 2005/Feb/12.  *)

let test_regression_1 () = 

  let lst = Dllist.create 1 in

  ignore (Dllist.append lst 2);

  ignore (Dllist.demote lst);

  ignore (Dllist.length lst) (* <-- hangs here *)

(* Failure case reported by Christopher Wedman on extlib mailing list 2005/Feb/12.  *)

let test_regression_2 () = 

  let lst = Dllist.create 1 in

  ignore (Dllist.append lst 2);

  ignore (Dllist.promote lst);

  assert (Dllist.length lst = 2)  (* returned 1, but should return 2 *)

let () = 

  Util.register "Dllist" [

    "simple", test_simple;

    "regression_1", test_regression_1;

    "regression_2", test_regression_2;

  ]