LCOV - code coverage report
Current view: top level - gltests - test-fread.c (source / functions) Hit Total Coverage
Test: GNU Libidn Lines: 22 32 68.8 %
Date: 2015-03-02 11:46:03 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* Test of fread() function.
       2             :    Copyright (C) 2011-2015 Free Software Foundation, Inc.
       3             : 
       4             :    This program is free software; you can redistribute it and/or modify
       5             :    it under the terms of the GNU General Public License as published by
       6             :    the Free Software Foundation; either version 3, or (at your option)
       7             :    any later version.
       8             : 
       9             :    This program 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
      12             :    GNU General Public License for more details.
      13             : 
      14             :    You should have received a copy of the GNU General Public License
      15             :    along with this program; if not, see <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : #include <config.h>
      18             : 
      19             : #include <stdio.h>
      20             : 
      21             : #include "signature.h"
      22             : SIGNATURE_CHECK (fread, size_t, (void *, size_t, size_t, FILE *));
      23             : 
      24             : #include <errno.h>
      25             : #include <fcntl.h>
      26             : #include <unistd.h>
      27             : 
      28             : #include "msvc-inval.h"
      29             : 
      30             : #include "macros.h"
      31             : 
      32             : int
      33           1 : main (int argc, char **argv)
      34             : {
      35           1 :   const char *filename = "test-fread.txt";
      36             : 
      37             :   /* We don't have an fread() function that installs an invalid parameter
      38             :      handler so far.  So install that handler here, explicitly.  */
      39             : #if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
      40             :     && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
      41             :   gl_msvc_inval_ensure_handler ();
      42             : #endif
      43             : 
      44             :   /* Prepare a file.  */
      45             :   {
      46           1 :     const char text[] = "hello world";
      47           1 :     int fd = open (filename, O_RDWR | O_CREAT | O_TRUNC, 0600);
      48           1 :     ASSERT (fd >= 0);
      49           1 :     ASSERT (write (fd, text, sizeof (text)) == sizeof (text));
      50           1 :     ASSERT (close (fd) == 0);
      51             :   }
      52             : 
      53             :   /* Test that fread() sets errno if someone else closes the stream
      54             :      fd behind the back of stdio.  */
      55             :   {
      56           1 :     FILE *fp = fopen (filename, "r");
      57             :     char buf[5];
      58           1 :     ASSERT (fp != NULL);
      59           1 :     ASSERT (close (fileno (fp)) == 0);
      60           1 :     errno = 0;
      61           1 :     ASSERT (fread (buf, 1, sizeof (buf), fp) == 0);
      62           1 :     ASSERT (errno == EBADF);
      63           1 :     ASSERT (ferror (fp));
      64           1 :     fclose (fp);
      65             :   }
      66             : 
      67             :   /* Test that fread() sets errno if the stream was constructed with
      68             :      an invalid file descriptor.  */
      69             :   {
      70           1 :     FILE *fp = fdopen (-1, "r");
      71           1 :     if (fp != NULL)
      72             :       {
      73             :         char buf[1];
      74           0 :         errno = 0;
      75           0 :         ASSERT (fread (buf, 1, 1, fp) == 0);
      76           0 :         ASSERT (errno == EBADF);
      77           0 :         ASSERT (ferror (fp));
      78           0 :         fclose (fp);
      79             :       }
      80             :   }
      81             :   {
      82             :     FILE *fp;
      83           1 :     close (99);
      84           1 :     fp = fdopen (99, "r");
      85           1 :     if (fp != NULL)
      86             :       {
      87             :         char buf[1];
      88           0 :         errno = 0;
      89           0 :         ASSERT (fread (buf, 1, 1, fp) == 0);
      90           0 :         ASSERT (errno == EBADF);
      91           0 :         ASSERT (ferror (fp));
      92           0 :         fclose (fp);
      93             :       }
      94             :   }
      95             : 
      96             :   /* Clean up.  */
      97           1 :   unlink (filename);
      98             : 
      99           1 :   return 0;
     100             : }

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