cryb-to/t/t_fletcher.c
2015-08-17 15:21:47 +00:00

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/*-
* Copyright (c) 2015 Dag-Erling Smørgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "cryb/impl.h"
#include <stdint.h>
#include <string.h>
#include <cryb/hash.h>
#include "t.h"
struct t_case {
const char *desc;
const char *data;
size_t len;
uint16_t sum16;
uint32_t sum32;
uint64_t sum64;
};
/***************************************************************************
* Test cases
*/
static struct t_case t_cases[] = {
{
.desc = "len == 0",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 0,
.sum16 = 0x00,
.sum32 = 0x00,
.sum64 = 0x00,
},
{
.desc = "len == 1",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 1,
.sum16 = 0x0101,
.sum32 = 0x01000100,
.sum64 = 0x0100000001000000,
},
{
.desc = "len == 2",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 2,
.sum16 = 0x0403,
.sum32 = 0x01020102,
.sum64 = 0x0102000001020000,
},
{
.desc = "len == 3",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 3,
.sum16 = 0x0a06,
.sum32 = 0x05040402,
.sum64 = 0x102030001020300,
},
{
.desc = "len == 4",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 4,
.sum16 = 0x140a,
.sum32 = 0x05080406,
.sum64 = 0x0102030401020304,
},
{
.desc = "len == 5",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 5,
.sum16 = 0x230f,
.sum32 = 0x0e0e0906,
.sum64 = 0x0704060806020304,
},
{
.desc = "len == 6",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 6,
.sum16 = 0x3815,
.sum32 = 0x0e14090c,
.sum64 = 0x070a060806080304,
},
{
.desc = "len == 7",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 7,
.sum16 = 0x541c,
.sum32 = 0x1e20100c,
.sum64 = 0x070a0d0806080a04,
},
{
.desc = "len == 8",
.data = "\x01\x02\x03\x04\x05\x06\x07\x08",
.len = 8,
.sum16 = 0x7824,
.sum32 = 0x1e281014,
.sum64 = 0x070a0d1006080a0c,
},
};
/***************************************************************************
* Test function
*/
static int
t_fletcher(char **desc CRYB_UNUSED, void *arg)
{
struct t_case *t = arg;
int ret;
ret = t_compare_x16(t->sum16, fletcher16_hash(t->data, t->len)) &
t_compare_x32(t->sum32, fletcher32_hash(t->data, t->len)) &
t_compare_x64(t->sum64, fletcher64_hash(t->data, t->len));
return (ret);
}
/***************************************************************************
* Boilerplate
*/
int
t_prepare(int argc, char *argv[])
{
int i, n;
(void)argc;
(void)argv;
n = sizeof t_cases / sizeof t_cases[0];
for (i = 0; i < n; ++i)
t_add_test(t_fletcher, &t_cases[i], t_cases[i].desc);
return (0);
}
void
t_cleanup(void)
{
}