git subrepo clone --branch=20.41.6 git@github.com:ETLCPP/etl.git components/etl
subrepo: subdir: "components/etl" merged: "be5537ec" upstream: origin: "git@github.com:ETLCPP/etl.git" branch: "20.41.6" commit: "be5537ec" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
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components/etl/test/test_xor_checksum.cpp
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components/etl/test/test_xor_checksum.cpp
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2014 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#include "unit_test_framework.h"
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#include <iterator>
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#include <string>
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#include <vector>
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#include <stdint.h>
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#include "etl/checksum.h"
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namespace
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{
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template <typename TSum, typename TIterator>
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TSum reference_checksum(TIterator begin, TIterator end)
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{
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typedef typename std::iterator_traits<TIterator>::value_type value_type;
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TSum checksum = 0;
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while (begin != end)
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{
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value_type value = *begin++;
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checksum ^= value;
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}
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return checksum;
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}
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SUITE(test_checksum)
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{
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//*************************************************************************
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TEST(test_checksum_constructor)
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{
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std::string data("123456789");
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uint8_t sum = etl::xor_checksum<uint8_t>(data.begin(), data.end());
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uint8_t compare = reference_checksum<uint8_t>(data.begin(), data.end());
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CHECK_EQUAL(int(compare), int(sum));
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}
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//*************************************************************************
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TEST(test_checksum_add_values8_add)
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{
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std::string data("123456789");
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etl::xor_checksum<uint8_t> checksum_calculator;
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for (size_t i = 0UL; i < data.size(); ++i)
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{
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checksum_calculator.add(data[i]);
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}
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uint8_t sum = checksum_calculator;
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uint8_t compare = reference_checksum<uint8_t>(data.begin(), data.end());
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CHECK_EQUAL(int(compare), int(sum));
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}
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//*************************************************************************
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TEST(test_checksum_add_values8_operator_plus_equals)
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{
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std::string data("123456789");
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etl::xor_checksum<uint8_t> checksum_calculator;
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for (size_t i = 0UL; i < data.size(); ++i)
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{
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checksum_calculator.add(data[i]);
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}
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uint8_t sum = checksum_calculator;
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uint8_t compare = reference_checksum<uint8_t>(data.begin(), data.end());
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CHECK_EQUAL(int(compare), int(sum));
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}
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//*************************************************************************
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TEST(test_checksum_add_range)
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{
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std::string data("123456789");
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etl::xor_checksum<uint8_t> checksum_calculator;
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checksum_calculator.add(data.begin(), data.end());
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uint8_t sum = checksum_calculator.value();
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uint8_t compare = reference_checksum<uint8_t>(data.begin(), data.end());
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CHECK_EQUAL(int(compare), int(sum));
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}
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//*************************************************************************
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TEST(test_checksum_add_range_sum32)
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{
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std::string data("1");
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etl::xor_checksum<uint32_t> checksum_calculator;
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checksum_calculator.add(data.begin(), data.end());
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uint32_t sum = checksum_calculator.value();
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uint32_t compare = reference_checksum<uint32_t>(data.begin(), data.end());
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CHECK_EQUAL(compare, sum);
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}
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//*************************************************************************
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TEST(test_checksum_add_range_endian)
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{
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std::vector<uint8_t> data1 = { 0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U };
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std::vector<uint32_t> data2 = { 0x04030201UL, 0x08070605UL };
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std::vector<uint8_t> data3 = { 0x08U, 0x07U, 0x06U, 0x05U, 0x04U, 0x03U, 0x02U, 0x01U };
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uint64_t hash1 = etl::xor_checksum<uint8_t>(data1.begin(), data1.end());
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uint64_t hash2 = etl::xor_checksum<uint8_t>((uint8_t*)&data2[0], (uint8_t*)&data2[0] + (data2.size() * sizeof(uint32_t)));
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uint64_t hash3 = etl::xor_checksum<uint8_t>(data3.rbegin(), data3.rend());
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CHECK_EQUAL(hash1, hash2);
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CHECK_EQUAL(hash1, hash3);
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}
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};
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}
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