Mercurial > hg > octave-nkf > gnulib-hg
changeset 9974:4e68e73d390a
Tests for module 'memchr'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Apr 2008 12:43:40 +0200 |
parents | 24a3fc9d1291 |
children | 44e4e306d7c5 |
files | ChangeLog modules/memchr-tests tests/test-memchr.c |
diffstat | 3 files changed, 113 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2008-04-26 Bruno Haible <bruno@clisp.org> + + * modules/memchr-tests: New file. + * tests/test-memchr.c; New file, based on tests/test-memchr2.c. + 2008-04-26 Eric Blake <ebb9@byu.net> Bruno Haible <bruno@clisp.org>
new file mode 100644 --- /dev/null +++ b/modules/memchr-tests @@ -0,0 +1,10 @@ +Files: +tests/test-memchr.c + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-memchr +check_PROGRAMS += test-memchr
new file mode 100644 --- /dev/null +++ b/tests/test-memchr.c @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2008 Free Software Foundation + * Written by Eric Blake and Bruno Haible + * + * 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 <stdio.h> +#include <stdlib.h> + +#define ASSERT(expr) \ + do \ + { \ + if (!(expr)) \ + { \ + fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ + fflush (stderr); \ + abort (); \ + } \ + } \ + while (0) + +/* Calculating void * + int is not portable, so this wrapper converts + to char * to make the tests easier to write. */ +#define MEMCHR (char *) memchr + +int +main () +{ + size_t n = 0x100000; + char *input = malloc (n); + ASSERT (input); + + input[0] = 'a'; + input[1] = 'b'; + memset (input + 2, 'c', 1024); + memset (input + 1026, 'd', n - 1028); + input[n - 2] = 'e'; + input[n - 1] = 'a'; + + /* Basic behavior tests. */ + ASSERT (MEMCHR (input, 'a', n) == input); + + ASSERT (MEMCHR (input, 'a', 0) == NULL); + ASSERT (MEMCHR (NULL, 'a', 0) == NULL); + + ASSERT (MEMCHR (input, 'b', n) == input + 1); + ASSERT (MEMCHR (input, 'c', n) == input + 2); + ASSERT (MEMCHR (input, 'd', n) == input + 1026); + + ASSERT (MEMCHR (input + 1, 'a', n - 1) == input + n - 1); + ASSERT (MEMCHR (input + 1, 'e', n - 1) == input + n - 2); + + ASSERT (MEMCHR (input, 'f', n) == NULL); + ASSERT (MEMCHR (input, '\0', n) == NULL); + + /* Check that a very long haystack is handled quickly if the byte is + found near the beginning. */ + { + size_t repeat = 10000; + for (; repeat > 0; repeat--) + { + ASSERT (MEMCHR (input, 'c', n) == input + 2); + } + } + + /* Alignment tests. */ + { + int i, j; + for (i = 0; i < 32; i++) + { + for (j = 0; j < 256; j++) + input[i + j] = j; + for (j = 0; j < 256; j++) + { + ASSERT (MEMCHR (input + i, j, 256) == input + i + j); + } + } + } + + free (input); + + return 0; +}