text: /* 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 "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_init();
  	crc32_hash32(input);
  
  	crc32_ctx_init(&crc);
  	crc32_ctx_hash32(&crc, 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);
  
  	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);
  
  	test_print_result();
  }
  