Mercurial > hg > octave-kai > gnulib-hg
changeset 15694:264f4282e7c1
Tests for module 'read'.
* modules/read-tests: New file.
* tests/test-read.c: New file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Tue, 20 Sep 2011 22:16:23 +0200 |
parents | bc4a7eb2598f |
children | 7ff473baf3d5 |
files | ChangeLog modules/read-tests tests/test-read.c |
diffstat | 3 files changed, 90 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2011-09-20 Bruno Haible <bruno@clisp.org> + Tests for module 'read'. + * modules/read-tests: New file. + * tests/test-read.c: New file. + pwrite tests: EBADF tests. * tests/test-pwrite.c (main): Add tests for EBADF.
new file mode 100644 --- /dev/null +++ b/modules/read-tests @@ -0,0 +1,14 @@ +Files: +tests/test-read.c +tests/signature.h +tests/macros.h + +Depends-on: +binary-io +open + +configure.ac: + +Makefile.am: +TESTS += test-read +check_PROGRAMS += test-read
new file mode 100644 --- /dev/null +++ b/tests/test-read.c @@ -0,0 +1,72 @@ +/* Test the read() function. + Copyright (C) 2011 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/>. */ + +#include <config.h> + +#include <unistd.h> + +#include "signature.h" +SIGNATURE_CHECK (read, ssize_t, (int, void *, size_t)); + +#include <errno.h> +#include <fcntl.h> +#include <string.h> + +#include "macros.h" + +int +main (void) +{ + const char *filename = "test-read.tmp"; + int fd; + + /* Create a file with a simple contents. */ + fd = open (filename, O_CREAT | O_WRONLY, 0600); + ASSERT (fd >= 0); + ASSERT (write (fd, "Hello World", 11) == 11); + ASSERT (close (fd) == 0); + + /* Read from the middle of the file. */ + fd = open (filename, O_RDONLY); + ASSERT (fd >= 0); + ASSERT (lseek (fd, 6, SEEK_SET) == 6); + { + char buf[10]; + ssize_t ret = read (fd, buf, 10); + ASSERT (ret == 5); + ASSERT (memcmp (buf, "World", 5) == 0); + } + ASSERT (close (fd) == 0); + + /* Test behaviour for invalid file descriptors. */ + { + char byte; + errno = 0; + ASSERT (read (-1, &byte, 1) == -1); + ASSERT (errno == EBADF); + } + { + char byte; + errno = 0; + ASSERT (read (99, &byte, 1) == -1); + ASSERT (errno == EBADF); + } + + /* Clean up. */ + unlink (filename); + + return 0; +}