/* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2006  Gabor Csardi <csardi@rmki.kfki.hu>
   MTA RMKI, Konkoly-Thege Miklos st. 29-33, Budapest 1121, Hungary
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program 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 General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc.,  51 Franklin Street, Fifth Floor, Boston, MA 
   02110-1301 USA

*/

#include <igraph.h>

int main() {
  
  igraph_dqueue_t q;
  int i;

  /* igraph_dqueue_init, igraph_dqueue_destroy, igraph_dqueue_empty */
  igraph_dqueue_init(&q, 5);
  if (!igraph_dqueue_empty(&q)) {
    return 1;
  }
  igraph_dqueue_destroy(&q);

  /* igraph_dqueue_push, igraph_dqueue_pop */
  igraph_dqueue_init(&q, 4);
  igraph_dqueue_push(&q, 1);
  igraph_dqueue_push(&q, 2);
  igraph_dqueue_push(&q, 3);
  igraph_dqueue_push(&q, 4);
  if (igraph_dqueue_pop(&q) != 1) {
    return 2;
  }
  if (igraph_dqueue_pop(&q) != 2) {
    return 3;
  }
  if (igraph_dqueue_pop(&q) != 3) {
    return 4;
  }
  if (igraph_dqueue_pop(&q) != 4) {
    return 5;
  }
  igraph_dqueue_destroy(&q);

  /* igraph_dqueue_clear, igraph_dqueue_size */
  igraph_dqueue_init(&q, 0);
  if (igraph_dqueue_size(&q) != 0) {
    return 6;
  }
  igraph_dqueue_clear(&q);
  if (igraph_dqueue_size(&q) != 0) {
    return 7;
  }
  for (i=0; i<10; i++) {
    igraph_dqueue_push(&q, i);
  }
  igraph_dqueue_clear(&q);
  if (igraph_dqueue_size(&q) != 0) {
    return 8;
  }
  igraph_dqueue_destroy(&q);

  /* TODO: igraph_dqueue_full */

  /* igraph_dqueue_head, igraph_dqueue_back, igraph_dqueue_pop_back */
  igraph_dqueue_init(&q, 0);
  for (i=0; i<10; i++) {
    igraph_dqueue_push(&q, i);
  }
  for (i=0; i<10; i++) {
    if (igraph_dqueue_head(&q) != 0) {
      return 9;
    }
    if (igraph_dqueue_back(&q) != 9-i) {
      return 10;
    }
    if (igraph_dqueue_pop_back(&q) != 9-i) {
      return 11;
    }
  }
  igraph_dqueue_destroy(&q);

  if (IGRAPH_FINALLY_STACK_SIZE() != 0) return 12;

  return 0;
}