50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
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/* Check that basic freopen functionality works. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int
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main (void)
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{
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FILE *old_stderr;
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FILE *f;
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const char fname[] = "sk1test.dat";
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const char tsttxt[]
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= "A random line of text, used to test correct freopen etc.\n";
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char buf[sizeof tsttxt] = "";
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/* Like the freopen call in flex. */
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old_stderr = freopen (fname, "w+", stderr);
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if (old_stderr == NULL
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|| fwrite (tsttxt, 1, strlen (tsttxt), stderr) != strlen (tsttxt)
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|| fclose (stderr) != 0)
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{
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printf ("fail\n");
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exit (1);
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}
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/* Using "rb" to make this test similar to the use in genconf.c in
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GhostScript. */
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f = fopen (fname, "rb");
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if (f == NULL
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|| fseek (f, 0L, SEEK_END) != 0
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|| ftell (f) != strlen (tsttxt))
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{
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printf ("fail\n");
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exit (1);
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}
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rewind (f);
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if (fread (buf, 1, strlen (tsttxt), f) != strlen (tsttxt)
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|| strcmp (buf, tsttxt) != 0
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|| fclose (f) != 0)
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{
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printf ("fail\n");
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exit (1);
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}
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printf ("pass\n");
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exit (0);
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}
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