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b168057a | 1 | /* Copyright (C) 1991-2015 Free Software Foundation, Inc. |
5a97622d UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
5a97622d UD |
8 | |
9 | The GNU C 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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
5a97622d | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
5a97622d | 17 | |
28f540f4 RM |
18 | #include <stdio.h> |
19 | ||
e66f63fb | 20 | #define TESTFILE "/tmp/test.dat" |
28f540f4 | 21 | |
29955b5d AS |
22 | static int |
23 | do_test (void) | |
28f540f4 RM |
24 | { |
25 | FILE *fp; | |
26 | int i, j; | |
27 | ||
28 | puts ("\nFile seek test"); | |
29 | fp = fopen (TESTFILE, "w"); | |
30 | if (fp == NULL) | |
31 | { | |
32 | perror (TESTFILE); | |
33 | return 1; | |
34 | } | |
35 | ||
36 | for (i = 0; i < 256; i++) | |
37 | putc (i, fp); | |
38 | if (freopen (TESTFILE, "r", fp) != fp) | |
39 | { | |
40 | perror ("Cannot open file for reading"); | |
41 | return 1; | |
42 | } | |
43 | ||
44 | for (i = 1; i <= 255; i++) | |
45 | { | |
46 | printf ("%3d\n", i); | |
47 | fseek (fp, (long) -i, SEEK_END); | |
48 | if ((j = getc (fp)) != 256 - i) | |
49 | { | |
50 | printf ("SEEK_END failed %d\n", j); | |
51 | break; | |
52 | } | |
53 | if (fseek (fp, (long) i, SEEK_SET)) | |
54 | { | |
55 | puts ("Cannot SEEK_SET"); | |
56 | break; | |
57 | } | |
58 | if ((j = getc (fp)) != i) | |
59 | { | |
60 | printf ("SEEK_SET failed %d\n", j); | |
61 | break; | |
62 | } | |
63 | if (fseek (fp, (long) i, SEEK_SET)) | |
64 | { | |
65 | puts ("Cannot SEEK_SET"); | |
66 | break; | |
67 | } | |
68 | if (fseek (fp, (long) (i >= 128 ? -128 : 128), SEEK_CUR)) | |
69 | { | |
70 | puts ("Cannot SEEK_CUR"); | |
71 | break; | |
72 | } | |
73 | if ((j = getc (fp)) != (i >= 128 ? i - 128 : i + 128)) | |
74 | { | |
75 | printf ("SEEK_CUR failed %d\n", j); | |
76 | break; | |
77 | } | |
78 | } | |
79 | fclose (fp); | |
5a97622d | 80 | remove (TESTFILE); |
28f540f4 RM |
81 | |
82 | puts ((i > 255) ? "Test succeeded." : "Test FAILED!"); | |
83 | return (i > 255) ? 0 : 1; | |
84 | } | |
29955b5d AS |
85 | |
86 | #define TEST_FUNCTION do_test () | |
87 | #include "../test-skeleton.c" |