tests/test-i-ring.c

   1 /* Test the simple ring buffer.
   2    Copyright (C) 2006-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* written by Jim Meyering */
  18
  19 #include <config.h>
  20
  21 #include "i-ring.h"
  22
  23 #include "macros.h"
  24
  25 int
  26 main (void)
  27 {
  28   int o;
  29   I_ring ir;
  30   i_ring_init (&ir, -1);
  31   o = i_ring_push (&ir, 1);
  32   ASSERT (o == -1);
  33   o = i_ring_push (&ir, 2);
  34   ASSERT (o == -1);
  35   o = i_ring_push (&ir, 3);
  36   ASSERT (o == -1);
  37   o = i_ring_push (&ir, 4);
  38   ASSERT (o == -1);
  39   o = i_ring_push (&ir, 5);
  40   ASSERT (o == 1);
  41   o = i_ring_push (&ir, 6);
  42   ASSERT (o == 2);
  43   o = i_ring_push (&ir, 7);
  44   ASSERT (o == 3);
  45
  46   o = i_ring_pop (&ir);
  47   ASSERT (o == 7);
  48   o = i_ring_pop (&ir);
  49   ASSERT (o == 6);
  50   o = i_ring_pop (&ir);
  51   ASSERT (o == 5);
  52   o = i_ring_pop (&ir);
  53   ASSERT (o == 4);
  54   ASSERT (i_ring_empty (&ir));
  55
  56   o = i_ring_push (&ir, 8);
  57   ASSERT (o == -1);
  58   o = i_ring_pop (&ir);
  59   ASSERT (o == 8);
  60   ASSERT (i_ring_empty (&ir));
  61
  62   return 0;
  63 }