/* Test of command line argument processing.

   Copyright (C) 2009-2017 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2009.  */

#include "signature.h"

SIGNATURE_CHECK (getopt, int, (int, char * const[], char const *));

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

/* This test intentionally remaps stderr.  So, we arrange to have fd 10

   (outside the range of interesting fd's during the test) set up to

   duplicate the original stderr.  */

#define BACKUP_STDERR_FILENO 10

#define ASSERT_STREAM myerr

#include "macros.h"

static FILE *myerr;

#include "test-getopt.h"

#if TEST_GETOPT_GNU

# include "test-getopt_long.h"

#endif

int

main (void)

{

   /* This test validates that stderr is used correctly, so move the

      original into fd 10.  */

  if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO

      || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)

    return 2;

  ASSERT (freopen (TEST_GETOPT_TMP_NAME, "w", stderr) == stderr);

  /* These default values are required by POSIX.  */

  ASSERT (optind == 1);

  ASSERT (opterr != 0);

  setenv ("POSIXLY_CORRECT", "1", 1);

  test_getopt ();

#if TEST_GETOPT_GNU

  test_getopt_long_posix ();

#endif

  unsetenv ("POSIXLY_CORRECT");

  test_getopt ();

#if TEST_GETOPT_GNU

  test_getopt_long ();

  test_getopt_long_only ();

#endif

  ASSERT (fclose (stderr) == 0);

  ASSERT (remove (TEST_GETOPT_TMP_NAME) == 0);

  return 0;

}