1  /* Test the simple ring buffer.
       2     Copyright (C) 2006-2022 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  }