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/* Copyright 2016 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Tests crc32 sw implementation.
*/
#include "common.h"
#include "console.h"
#include "crc.h"
#include "crc8.h"
#include "test_util.h"
#include "util.h"
// test that static version matches context version
static int test_static_version(void)
{
uint32_t crc;
const uint32_t input = 0xdeadbeef;
crc32_ctx_init(&crc);
crc32_ctx_hash32(&crc, input);
crc32_init();
crc32_hash32(input);
TEST_ASSERT(crc32_result() == crc32_ctx_result(&crc));
crc32_init();
crc32_hash(&input, sizeof(input));
TEST_ASSERT(crc32_result() == crc32_ctx_result(&crc));
return EC_SUCCESS;
}
// test that context bytes at a time matches static word at time
static int test_8(void)
{
uint32_t crc;
const uint32_t input = 0xdeadbeef;
const uint8_t *p = (const uint8_t *) &input;
int i;
crc32_init();
crc32_hash32(input);
crc32_ctx_init(&crc);
for (i = 0; i < sizeof(input); ++i)
crc32_ctx_hash8(&crc, p[i]);
TEST_ASSERT(crc32_result() == crc32_ctx_result(&crc));
return EC_SUCCESS;
}
// http://www.febooti.com/products/filetweak/members/hash-and-crc/test-vectors/
static int test_kat0(void)
{
uint32_t crc;
int i;
const char input[] = "The quick brown fox jumps over the lazy dog";
crc32_ctx_init(&crc);
for (i = 0; i < strlen(input); ++i)
crc32_ctx_hash8(&crc, input[i]);
TEST_ASSERT(crc32_ctx_result(&crc) == 0x414fa339);
crc32_ctx_init(&crc);
crc32_ctx_hash(&crc, input, strlen(input));
TEST_ASSERT(crc32_ctx_result(&crc) == 0x414fa339);
return EC_SUCCESS;
}
static int test_cros_crc8(void)
{
uint8_t buffer[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 8 };
int crc = cros_crc8(buffer, 10);
/* Verifies polynomial values of 0x07 representing x^8 + x^2 + x + 1 */
TEST_EQ(crc, 170, "%d");
return EC_SUCCESS;
}
void run_test(int argc, char **argv)
{
test_reset();
RUN_TEST(test_static_version);
RUN_TEST(test_8);
RUN_TEST(test_kat0);
RUN_TEST(test_cros_crc8);
test_print_result();
}
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