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/* Test the simple ring buffer.
Copyright (C) 2006-2020 Free Software Foundation, Inc.
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 3 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, see <https://www.gnu.org/licenses/>. */
/* written by Jim Meyering */
#include <config.h>
#include "i-ring.h"
#include "macros.h"
int
main (void)
{
int o;
I_ring ir;
i_ring_init (&ir, -1);
o = i_ring_push (&ir, 1);
ASSERT (o == -1);
o = i_ring_push (&ir, 2);
ASSERT (o == -1);
o = i_ring_push (&ir, 3);
ASSERT (o == -1);
o = i_ring_push (&ir, 4);
ASSERT (o == -1);
o = i_ring_push (&ir, 5);
ASSERT (o == 1);
o = i_ring_push (&ir, 6);
ASSERT (o == 2);
o = i_ring_push (&ir, 7);
ASSERT (o == 3);
o = i_ring_pop (&ir);
ASSERT (o == 7);
o = i_ring_pop (&ir);
ASSERT (o == 6);
o = i_ring_pop (&ir);
ASSERT (o == 5);
o = i_ring_pop (&ir);
ASSERT (o == 4);
ASSERT (i_ring_empty (&ir));
o = i_ring_push (&ir, 8);
ASSERT (o == -1);
o = i_ring_pop (&ir);
ASSERT (o == 8);
ASSERT (i_ring_empty (&ir));
return 0;
}
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