1 /* Test the simple ring buffer.
2 Copyright (C) 2006-2018 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
main(void)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 }
64