diff options
Diffstat (limited to 'REORG.TODO/stdio-common/test-fseek.c')
-rw-r--r-- | REORG.TODO/stdio-common/test-fseek.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/REORG.TODO/stdio-common/test-fseek.c b/REORG.TODO/stdio-common/test-fseek.c new file mode 100644 index 0000000000..2416b190aa --- /dev/null +++ b/REORG.TODO/stdio-common/test-fseek.c @@ -0,0 +1,87 @@ +/* Copyright (C) 1991-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <stdio.h> + +#define TESTFILE "/tmp/test.dat" + +static int +do_test (void) +{ + FILE *fp; + int i, j; + + puts ("\nFile seek test"); + fp = fopen (TESTFILE, "w"); + if (fp == NULL) + { + perror (TESTFILE); + return 1; + } + + for (i = 0; i < 256; i++) + putc (i, fp); + if (freopen (TESTFILE, "r", fp) != fp) + { + perror ("Cannot open file for reading"); + return 1; + } + + for (i = 1; i <= 255; i++) + { + printf ("%3d\n", i); + fseek (fp, (long) -i, SEEK_END); + if ((j = getc (fp)) != 256 - i) + { + printf ("SEEK_END failed %d\n", j); + break; + } + if (fseek (fp, (long) i, SEEK_SET)) + { + puts ("Cannot SEEK_SET"); + break; + } + if ((j = getc (fp)) != i) + { + printf ("SEEK_SET failed %d\n", j); + break; + } + if (fseek (fp, (long) i, SEEK_SET)) + { + puts ("Cannot SEEK_SET"); + break; + } + if (fseek (fp, (long) (i >= 128 ? -128 : 128), SEEK_CUR)) + { + puts ("Cannot SEEK_CUR"); + break; + } + if ((j = getc (fp)) != (i >= 128 ? i - 128 : i + 128)) + { + printf ("SEEK_CUR failed %d\n", j); + break; + } + } + fclose (fp); + remove (TESTFILE); + + puts ((i > 255) ? "Test succeeded." : "Test FAILED!"); + return (i > 255) ? 0 : 1; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |