From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- stdio/test-fseek.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 stdio/test-fseek.c (limited to 'stdio/test-fseek.c') diff --git a/stdio/test-fseek.c b/stdio/test-fseek.c new file mode 100644 index 0000000000..398cac796f --- /dev/null +++ b/stdio/test-fseek.c @@ -0,0 +1,67 @@ +#include +#include + +#define TESTFILE "test.dat" + +int +main __P((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); + + puts ((i > 255) ? "Test succeeded." : "Test FAILED!"); + return (i > 255) ? 0 : 1; +} -- cgit v1.2.3