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72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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static int
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do_test (void)
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{
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int result = 0;
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char buf[100];
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FILE *fp = fmemopen (buf, sizeof (buf), "w");
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if (fp == NULL)
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{
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puts ("fmemopen failed");
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return 0;
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}
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static const char str[] = "hello world";
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#define nstr (sizeof (str) - 1)
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fputs (str, fp);
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off_t o = ftello (fp);
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if (o != nstr)
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{
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printf ("first ftello returned %jd, expected %zu\n",
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(intmax_t) o, nstr);
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result = 1;
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}
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rewind (fp);
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o = ftello (fp);
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if (o != 0)
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{
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printf ("second ftello returned %jd, expected 0\n", (intmax_t) o);
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result = 1;
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}
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if (fseeko (fp, 0, SEEK_END) != 0)
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{
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puts ("fseeko failed");
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return 1;
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}
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o = ftello (fp);
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if (o != nstr)
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{
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printf ("third ftello returned %jd, expected %zu\n",
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(intmax_t) o, nstr);
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result = 1;
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}
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rewind (fp);
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static const char str2[] = "just hello";
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#define nstr2 (sizeof (str2) - 1)
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assert (nstr2 < nstr);
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fputs (str2, fp);
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o = ftello (fp);
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if (o != nstr2)
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{
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printf ("fourth ftello returned %jd, expected %zu\n",
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(intmax_t) o, nstr2);
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result = 1;
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}
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fclose (fp);
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static const char str3[] = "just hellod";
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if (strcmp (buf, str3) != 0)
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{
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printf ("final string is \"%s\", expected \"%s\"\n",
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buf, str3);
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result = 1;
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}
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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