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author | Bruno Haible <bruno@clisp.org> | 2012-01-03 03:56:16 +0100 |
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committer | Bruno Haible <bruno@clisp.org> | 2012-01-03 03:56:16 +0100 |
commit | 573631b2b57b8323022e70879064a815d16799b8 (patch) | |
tree | 546c33e8ae658ee06c2a920fe1a6e1569a5b6d39 | |
parent | d7af94ea8b164efa0cc8e8618875a8e9c127ec3c (diff) | |
download | gnulib-573631b2b57b8323022e70879064a815d16799b8.tar.gz |
Enhance tests for module 'isatty'.
* modules/isatty-tests (Depends-on): Add pipe-posix.
* tests/test-isatty.c: Include <fcntl.h>.
(DEV_NULL): New macro.
(main): Test the resut of isatty() also on regular files, pipes, and
/dev/null.
-rw-r--r-- | ChangeLog | 7 | ||||
-rw-r--r-- | modules/isatty-tests | 1 | ||||
-rw-r--r-- | tests/test-isatty.c | 50 |
3 files changed, 58 insertions, 0 deletions
@@ -1,5 +1,12 @@ 2012-01-02 Bruno Haible <bruno@clisp.org> + Enhance tests for module 'isatty'. + * modules/isatty-tests (Depends-on): Add pipe-posix. + * tests/test-isatty.c: Include <fcntl.h>. + (DEV_NULL): New macro. + (main): Test the resut of isatty() also on regular files, pipes, and + /dev/null. + New module 'isatty'. * lib/unistd.in.h (isatty): New declaration. * lib/isatty.c: New file, based on an idea of diff --git a/modules/isatty-tests b/modules/isatty-tests index ce699e3f7c..dff2d1723a 100644 --- a/modules/isatty-tests +++ b/modules/isatty-tests @@ -5,6 +5,7 @@ tests/macros.h Depends-on: unistd +pipe-posix configure.ac: diff --git a/tests/test-isatty.c b/tests/test-isatty.c index 9b164353a2..a63080c1f2 100644 --- a/tests/test-isatty.c +++ b/tests/test-isatty.c @@ -22,12 +22,24 @@ 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 __WIN32__) && ! defined __CYGWIN__ +/* Native Woe32 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; @@ -44,5 +56,43 @@ main (void) ); } + /* 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 0; } |