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00f43085d1
* lib/accept4.c: Update comments to mention native Windows. * lib/execute.c: Likewise. * lib/fatal-signal.c: Likewise. * lib/localcharset.c: Likewise. * lib/nanosleep.c: Likewise. * lib/nl_langinfo.c: Likewise. * lib/pclose.c: Likewise. * lib/pipe-filter-gi.c: Likewise. * lib/pipe-filter-ii.c: Likewise. * lib/pipe.c: Likewise. * lib/pipe2.c: Likewise. * lib/popen.c: Likewise. * lib/progreloc.c: Likewise. * lib/relocatable.c: Likewise. * lib/sigaction.c: Likewise. * lib/sigprocmask.c: Likewise. * lib/spawn-pipe.h: Likewise. * lib/spawn-pipe.c: Likewise. * lib/spawni.c: Likewise. * lib/stat-time.h: Likewise. * lib/w32spawn.h: Likewise. * tests/test-isatty.c: Likewise. * lib/config.charset: More comments. * doc/gnulib-intro.texi: Mention native Windows. * doc/posix-functions/_Exit_C99.texi: Likewise. * doc/posix-headers/fcntl.texi: Likewise.
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/* Test isatty() function.
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Copyright (C) 2011-2012 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <unistd.h>
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#include "signature.h"
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SIGNATURE_CHECK (isatty, int, (int));
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#include <errno.h>
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#include <fcntl.h>
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#include "macros.h"
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/* The name of the "always silent" device. */
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* Native Windows API. */
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# define DEV_NULL "NUL"
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#else
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/* Unix API. */
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# define DEV_NULL "/dev/null"
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#endif
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int
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main (void)
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{
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const char *file = "test-isatty.txt";
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/* Test behaviour for invalid file descriptors. */
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{
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errno = 0;
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ASSERT (isatty (-1) == 0);
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ASSERT (errno == EBADF
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|| errno == 0 /* seen on Solaris 10 */
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);
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}
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{
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errno = 0;
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ASSERT (isatty (99) == 0);
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ASSERT (errno == EBADF
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|| errno == 0 /* seen on Solaris 10 */
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);
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}
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/* Test behaviour for regular files. */
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{
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int fd;
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fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644);
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ASSERT (0 <= fd);
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ASSERT (write (fd, "hello", 5) == 5);
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ASSERT (close (fd) == 0);
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fd = open (file, O_RDONLY);
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ASSERT (0 <= fd);
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ASSERT (! isatty (fd));
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ASSERT (close (fd) == 0);
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}
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/* Test behaviour for pipes. */
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{
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int fd[2];
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ASSERT (pipe (fd) == 0);
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ASSERT (! isatty (fd[0]));
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ASSERT (! isatty (fd[1]));
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ASSERT (close (fd[0]) == 0);
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ASSERT (close (fd[1]) == 0);
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}
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/* Test behaviour for /dev/null. */
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{
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int fd;
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fd = open (DEV_NULL, O_RDONLY);
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ASSERT (0 <= fd);
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ASSERT (! isatty (fd));
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ASSERT (close (fd) == 0);
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}
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ASSERT (unlink (file) == 0);
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return 0;
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}
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