dlib C++ Library - crc32.cpp

// Copyright (C) 2011 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#include <sstream>
#include <string>
#include <cstdlib>
#include <ctime>
#include <cmath>
#include <dlib/crc32.h>
#include "tester.h"
namespace 
{
 using namespace test;
 using namespace dlib;
 using namespace std;
 logger dlog("test.crc32");
 class crc32_tester : public tester
 {
 public:
 crc32_tester (
 ) :
 tester ("test_crc32",
 "Runs tests on the crc32 component.")
 {}
 void perform_test (
 )
 {
 DLIB_TEST(crc32("davis").get_checksum() == 0x0445527C);
 crc32 c, c2;
 DLIB_TEST(c.get_checksum() == 0);
 c.add("davis");
 DLIB_TEST(c.get_checksum() == 0x0445527C);
 DLIB_TEST(c2.get_checksum() == 0);
 c2 = c;
 DLIB_TEST(c2.get_checksum() == 0x0445527C);
 crc32 c3(c);
 DLIB_TEST(c3.get_checksum() == 0x0445527C);
 c.add('a');
 c2.add('a');
 c3.add('a');
 DLIB_TEST(c.get_checksum() == 0xB100C606);
 DLIB_TEST(c2.get_checksum() == 0xB100C606);
 DLIB_TEST(c3.get_checksum() == 0xB100C606);
 crc32::kernel_1a cold;
 DLIB_TEST(cold.get_checksum() == 0);
 cold.add("davis");
 DLIB_TEST(cold.get_checksum() == 0x0445527C);
 c.clear();
 DLIB_TEST(c.get_checksum() == 0);
 c.add("davis");
 DLIB_TEST(c.get_checksum() == 0x0445527C);
 std::vector<char> buf;
 for (int i = 0; i < 4000; ++i)
 buf.push_back(i);
 DLIB_TEST(crc32(buf) == 492662731);
 }
 } a;
}