kc3-lang/gnulib/tests/test-isatty.c

• Show log

  Commit

• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

Download

• tests/test-isatty.c

• /* Test isatty() function.
     Copyright (C) 2011-2025 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 <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  #include <unistd.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (isatty, int, (int));
  
  #include <errno.h>
  #include <fcntl.h>
  
  #include "macros.h"
  
  /* The name of the "always silent" device.  */
  #if defined _WIN32 && ! defined __CYGWIN__
  /* Native Windows API.  */
  # define DEV_NULL "NUL"
  #else
  /* Unix API.  */
  # define DEV_NULL "/dev/null"
  #endif
  
  int
  main (void)
  {
    const char *file = "test-isatty.txt";
  
    /* Test behaviour for invalid file descriptors.  */
    {
      errno = 0;
      ASSERT (isatty (-1) == 0);
      ASSERT (errno == EBADF
              || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
             );
    }
    {
      close (99);
      errno = 0;
      ASSERT (isatty (99) == 0);
      ASSERT (errno == EBADF
              || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
             );
    }
  #ifdef AT_FDCWD
    {
      errno = 0;
      ASSERT (isatty (AT_FDCWD) == 0);
      ASSERT (errno == EBADF
              || errno == 0 /* seen on IRIX 6.5, Solaris 10 */
             );
    }
  #endif
  
    /* Test behaviour for regular files.  */
    {
      int fd;
  
      fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
      ASSERT (0 <= fd);
      ASSERT (write (fd, "hello", 5) == 5);
      ASSERT (close (fd) == 0);
  
      fd = open (file, O_RDONLY);
      ASSERT (0 <= fd);
      ASSERT (! isatty (fd));
      ASSERT (close (fd) == 0);
    }
  
    /* Test behaviour for pipes.  */
    {
      int fd[2];
  
      ASSERT (pipe (fd) == 0);
      ASSERT (! isatty (fd[0]));
      ASSERT (! isatty (fd[1]));
      ASSERT (close (fd[0]) == 0);
      ASSERT (close (fd[1]) == 0);
    }
  
    /* Test behaviour for /dev/null.  */
    {
      int fd;
  
      fd = open (DEV_NULL, O_RDONLY);
      ASSERT (0 <= fd);
      ASSERT (! isatty (fd));
      ASSERT (close (fd) == 0);
    }
  
    ASSERT (unlink (file) == 0);
  
    return test_exit_status;
  }
  

Download