tests/test-getopt-main.h

   1 /* Test of command line argument processing.
   2    Copyright (C) 2009-2024 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 of the License, or
   7    (at your option) 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 <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
  18
  19 #include "signature.h"
  20 SIGNATURE_CHECK (getopt, int, (int, char * const[], char const *));
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 /* This test intentionally remaps stderr.  So, we arrange to have fd 10
  28    (outside the range of interesting fd's during the test) set up to
  29    duplicate the original stderr.  */
  30
  31 #define BACKUP_STDERR_FILENO 10
  32 #define ASSERT_STREAM myerr
  33 #include "macros.h"
  34
  35 static FILE *myerr;
  36
  37 #include "test-getopt.h"
  38 #if TEST_GETOPT_GNU
  39 # include "test-getopt_long.h"
  40 #endif
  41
  42 int
  43 main (void)
  44 {
  45    /* This test validates that stderr is used correctly, so move the
  46       original into fd 10.  */
  47   if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
  48       || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
  49     return 2;
  50
  51   ASSERT (freopen (TEST_GETOPT_TMP_NAME, "w", stderr) == stderr);
  52
  53   /* These default values are required by POSIX.  */
  54   ASSERT (optind == 1);
  55   ASSERT (opterr != 0);
  56
  57   setenv ("POSIXLY_CORRECT", "1", 1);
  58   test_getopt ();
  59
  60 #if TEST_GETOPT_GNU
  61   test_getopt_long_posix ();
  62 #endif
  63
  64   unsetenv ("POSIXLY_CORRECT");
  65   test_getopt ();
  66
  67 #if TEST_GETOPT_GNU
  68   test_getopt_long ();
  69   test_getopt_long_only ();
  70 #endif
  71
  72   ASSERT (fclose (stderr) == 0);
  73   ASSERT (remove (TEST_GETOPT_TMP_NAME) == 0);
  74
  75   return test_exit_status;
  76 }