libs/dbprim/tests/t_ll_init.c

   1 /*
   2 ** Copyright (C) 2002 by Kevin L. Mitchell <klmitch@mit.edu>
   3 **
   4 ** This library is free software; you can redistribute it and/or
   5 ** modify it under the terms of the GNU Library General Public
   6 ** License as published by the Free Software Foundation; either
   7 ** version 2 of the License, or (at your option) any later version.
   8 **
   9 ** This library is distributed in the hope that it will be useful,
  10 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 ** Library General Public License for more details.
  13 **
  14 ** You should have received a copy of the GNU Library General Public
  15 ** License along with this library; if not, write to the Free
  16 ** Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  17 ** MA 02111-1307, USA
  18 **
  19 ** @(#)$Id: t_ll_init.c,v 1.1 2003/03/07 02:36:11 klmitch Exp $
  20 */
  21 #include <stdio.h>
  22
  23 #include "dbprim.h"
  24
  25 #define DEADINT 0xdeadbeef
  26 #define DEADPTR (void *)0xdeadbeef
  27
  28 static void
  29 check_init(link_head_t *head, char *how)
  30 {
  31   if (head->lh_magic != LINK_HEAD_MAGIC) /* Verify magic was set */
  32     printf("FAIL/%s_magic:Initialization failed to set magic number\n", how);
  33   else
  34     printf("PASS/%s_magic:Initialization set magic number properly\n", how);
  35
  36   if (head->lh_count != 0) /* verify count was set */
  37     printf("FAIL/%s_count:Initialization failed to clear count\n", how);
  38   else
  39     printf("PASS/%s_count:Initialization set count to 0\n", how);
  40
  41   if (head->lh_first != 0) /* verify first was set */
  42     printf("FAIL/%s_first:Initialization failed to clear first pointer\n",
  43            how);
  44   else
  45     printf("PASS/%s_first:Initialization set first pointer to 0\n", how);
  46
  47   if (head->lh_last != 0) /* verify last was set */
  48     printf("FAIL/%s_last:Initialization failed to clear last pointer\n", how);
  49   else
  50     printf("PASS/%s_last:Initialization set last pointer to 0\n", how);
  51 }
  52
  53 int
  54 main(int argc, char **argv)
  55 {
  56   unsigned long errcode;
  57   link_head_t head = LINK_HEAD_INIT(0);
  58
  59   /* Check that the static initializer produces a passable structure */
  60   check_init(&head, "ll_static");
  61
  62   /* now, check what ll_init does with bad arguments */
  63   if ((errcode = ll_init(0, 0)) == DB_ERR_BADARGS)
  64     printf("PASS/ll_init_nohead:ll_init(0, 0) returns DB_ERR_BADARGS\n");
  65   else
  66     printf("FAIL/ll_init_nohead:ll_init(0, 0) returned %lu instead of "
  67            "DB_ERR_BADARGS\n", errcode);
  68
  69   /* Scramble the structure */
  70   head.lh_magic = DEADINT;
  71   head.lh_count = DEADINT;
  72   head.lh_first = DEADPTR;
  73   head.lh_last = DEADPTR;
  74   head.lh_extra = DEADPTR;
  75
  76   /* Now try to initialize our structure and see what happens */
  77   if ((errcode = ll_init(&head, 0))) {
  78     printf("FAIL/ll_dynamic:ll_init(&head, 0) returned failure (%lu)\n",
  79            errcode);
  80     return 0;
  81   } else
  82     printf("PASS/ll_dynamic:ll_init(&head, 0) returned success\n");
  83
  84   /* Finally, verify initialization */
  85   check_init(&head, "ll_dynamic");
  86
  87   return 0;
  88 }