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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/types.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cppunit/plugin/TestPlugIn.h>
#include <rtl/crc.h>
namespace rtl_CRC32
{
class test : public CppUnit::TestFixture
{
public:
// insert your test code here.
void rtl_crc32_001()
{
// this is demonstration code
// CPPUNIT_ASSERT_MESSAGE("a message", 1 == 1);
sal_uInt32 nCRC = 0;
char buf[] = {0};
int num = 0;
nCRC = rtl_crc32(nCRC, buf, num);
CPPUNIT_ASSERT_EQUAL_MESSAGE("empty crc buffer", static_cast<sal_uInt32>(0), nCRC);
}
void rtl_crc32_002()
{
sal_uInt32 nCRC = 0;
char buf[] = {0,0};
int num = sizeof(buf);
nCRC = rtl_crc32(nCRC, buf, num);
CPPUNIT_ASSERT_MESSAGE("buffer contain 2 empty bytes, crc is zero", nCRC != 0);
}
void rtl_crc32_002_1()
{
sal_uInt32 nCRC = 0;
char buf[] = {0,0,0};
int num = sizeof(buf);
nCRC = rtl_crc32(nCRC, buf, num);
CPPUNIT_ASSERT_MESSAGE("buffer contain 3 empty bytes, crc is zero", nCRC != 0);
}
/**
* crc32 check:
* Build checksum on two buffers with same size but different content,
* the result (crc32 checksum) must differ
*/
void rtl_crc32_003()
{
sal_uInt32 nCRC1 = 0;
char buf1[] = {2};
int num1 = sizeof(buf1);
nCRC1 = rtl_crc32(nCRC1, buf1, num1);
sal_uInt32 nCRC2 = 0;
char buf2[] = {3};
int num2 = sizeof(buf2);
nCRC2 = rtl_crc32(nCRC2, buf2, num2);
CPPUNIT_ASSERT_MESSAGE("checksum should differ for buf1 and buf2", nCRC1 != nCRC2);
}
/** check if the crc32 only use as much values, as given
*
*/
void rtl_crc32_003_1()
{
sal_uInt32 nCRC1 = 0;
char buf1[] = {2,1};
int num1 = sizeof(buf1) - 1;
nCRC1 = rtl_crc32(nCRC1, buf1, num1);
sal_uInt32 nCRC2 = 0;
char buf2[] = {2,2};
int num2 = sizeof(buf2) - 1;
nCRC2 = rtl_crc32(nCRC2, buf2, num2);
CPPUNIT_ASSERT_EQUAL_MESSAGE("checksum leave it's bounds", nCRC2, nCRC1);
}
/** check if the crc32 differ at same content in reverse order
*
*/
void rtl_crc32_003_2()
{
sal_uInt32 nCRC1 = 0;
char buf1[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
int num1 = sizeof(buf1);
nCRC1 = rtl_crc32(nCRC1, buf1, num1);
sal_uInt32 nCRC2 = 0;
char buf2[] = {20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
int num2 = sizeof(buf2);
nCRC2 = rtl_crc32(nCRC2, buf2, num2);
CPPUNIT_ASSERT_MESSAGE("checksum should differ", nCRC1 != nCRC2);
}
// Change the following lines only, if you add, remove or rename
// member functions of the current class,
// because these macros are need by auto register mechanism.
CPPUNIT_TEST_SUITE(test);
CPPUNIT_TEST(rtl_crc32_001);
CPPUNIT_TEST(rtl_crc32_002);
CPPUNIT_TEST(rtl_crc32_002_1);
CPPUNIT_TEST(rtl_crc32_003);
CPPUNIT_TEST(rtl_crc32_003_1);
CPPUNIT_TEST(rtl_crc32_003_2);
CPPUNIT_TEST_SUITE_END();
}; // class test
CPPUNIT_TEST_SUITE_REGISTRATION(rtl_CRC32::test);
} // namespace rtl_CRC32
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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