Mercurial > hg > octave-lyh > gnulib-hg
changeset 13680:1213dbc889d0
strnlen: add tests
* modules/strnlen-tests: New file.
* tests/test-strnlen.c: Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Wed, 15 Sep 2010 13:38:29 -0600 |
parents | f4c397f20139 |
children | 4fafe1d82a9a |
files | ChangeLog modules/strnlen-tests tests/test-strnlen.c |
diffstat | 3 files changed, 94 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2010-09-15 Eric Blake <eblake@redhat.com> + + strnlen: add tests + * modules/strnlen-tests: New file. + * tests/test-strnlen.c: Likewise. + 2010-09-14 Bruno Haible <bruno@clisp.org> unistr/base: Avoid link errors when module 'libunistring' is also used.
new file mode 100644 --- /dev/null +++ b/modules/strnlen-tests @@ -0,0 +1,20 @@ +Files: +tests/test-strnlen.c +tests/zerosize-ptr.h +tests/signature.h +tests/macros.h +m4/mmap-anon.m4 + +Depends-on: +extensions +getpagesize + +configure.ac: +dnl Check for prerequisites for memory fence checks. +gl_FUNC_MMAP_ANON +AC_CHECK_HEADERS_ONCE([sys/mman.h]) +AC_CHECK_FUNCS_ONCE([mprotect]) + +Makefile.am: +TESTS += test-strnlen +check_PROGRAMS += test-strnlen
new file mode 100644 --- /dev/null +++ b/tests/test-strnlen.c @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2010 Free Software Foundation, Inc. + * Written by Eric Blake + * + * 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 <string.h> + +#include "signature.h" +SIGNATURE_CHECK (strnlen, size_t, (char const *, size_t)); + +#include <stdlib.h> + +#include "zerosize-ptr.h" +#include "macros.h" + +int +main (void) +{ + size_t i; + char *page_boundary = (char *) zerosize_ptr (); + if (!page_boundary) + { + page_boundary = malloc (0x1000); + ASSERT (page_boundary); + page_boundary += 0x1000; + } + + /* Basic behavior tests. */ + ASSERT (strnlen ("a", 0) == 0); + ASSERT (strnlen ("a", 1) == 1); + ASSERT (strnlen ("a", 2) == 1); + ASSERT (strnlen ("", 0x100000) == 0); + + /* Memory fence and alignment testing. */ + for (i = 0; i < 512; i++) + { + char *start = page_boundary - i; + size_t j = i; + memset (start, 'x', i); + do + { + if (i != j) + { + start[j] = 0; + ASSERT (strnlen (start, i + j) == j); + } + ASSERT (strnlen (start, i) == j); + ASSERT (strnlen (start, j) == j); + } + while (j--); + } + + return 0; +}