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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.

// All rights not expressly granted are reserved.

// This software is distributed under the terms of the GNU General Public

// License v3 (GPL Version 3), copied verbatim in the file "COPYING".

// In applying this license CERN does not waive the privileges and immunities

// granted to it by virtue of its status as an Intergovernmental Organization

// or submit itself to any jurisdiction.

/// @file parser.cxx

/// @author Matthias Richter

/// @since 2017-09-20

/// @brief Unit test for data parsing methods in Algorithm/Parser.h

#define BOOST_TEST_MODULE Test Algorithm Parser

#define BOOST_TEST_MAIN

#define BOOST_TEST_DYN_LINK

#include <boost/test/unit_test.hpp>

#include <iostream>

#include <iomanip>

#include <vector>

#include "../include/Algorithm/Parser.h"

#include "StaticSequenceAllocator.h"

// header test class

struct Header {

unsigned identifier = 0xdeadbeef;

size_t payloadSize = 0;

Header(size_t ps) : payloadSize(ps) {}

};

// trailer test class

struct Trailer {

unsigned identifier = 0xaaffee00;

unsigned char flags = 0xaa;

Trailer(unsigned char f) : flags(f) {}

};

// trailer test class including payload size

struct SizedTrailer {

unsigned identifier = 0xaaffee00;

unsigned char flags = 0xaa;

size_t payloadSize = 0;

SizedTrailer(size_t s, unsigned char f) : flags(f), payloadSize(s) {}

};

BOOST_AUTO_TEST_CASE(test_forwardparser_header_and_trailer)

{

using FrameT = o2::algorithm::Composite<Header, Trailer>;

// note: the length of the data is set in the header word

using TestFrame = o2::algorithm::StaticSequenceAllocator;

TestFrame tf(FrameT(16, "lotsofsillydata", 0xaa),

FrameT(5, "test", 0xcc),

FrameT(10, "dummydata", 0x33));

using ParserT = o2::algorithm::ForwardParser<typename FrameT::HeaderType,

typename FrameT::TrailerType>;

auto checkHeader = [](const typename FrameT::HeaderType& header) {

return header.identifier == 0xdeadbeef;

};

auto checkTrailer = [](const typename FrameT::TrailerType& trailer) {

return trailer.identifier == 0xaaffee00;

};

auto getFrameSize = [](const typename ParserT::HeaderType& header) {

// frame size includes total offset from header and trailer

return header.payloadSize + ParserT::totalOffset;

};

std::vector<typename ParserT::FrameInfo> frames;

auto insert = [&frames](typename ParserT::FrameInfo& info) {

frames.emplace_back(info);

return true;

};

ParserT parser;

auto result = parser.parse(tf.buffer.get(), tf.size(),

checkHeader,

checkTrailer,

getFrameSize,

insert);

BOOST_REQUIRE(result == 3);

BOOST_REQUIRE(frames.size() == 3);

BOOST_CHECK(memcmp(frames[0].payload, "lotsofsillydata", frames[0].length) == 0);

BOOST_CHECK(memcmp(frames[1].payload, "test", frames[1].length) == 0);

BOOST_CHECK(memcmp(frames[2].payload, "dummydata", frames[2].length) == 0);

}

BOOST_AUTO_TEST_CASE(test_forwardparser_header_and_void_trailer)

{

using FrameT = o2::algorithm::Composite<Header>;

// note: the length of the data is set in the header word

using TestFrame = o2::algorithm::StaticSequenceAllocator;

TestFrame tf(FrameT(16, "lotsofsillydata"),

FrameT(5, "test"),

FrameT(10, "dummydata"));

using ParserT = o2::algorithm::ForwardParser<typename FrameT::HeaderType,

typename FrameT::TrailerType>;

auto checkHeader = [](const typename FrameT::HeaderType& header) {

return header.identifier == 0xdeadbeef;

};

auto getFrameSize = [](const typename ParserT::HeaderType& header) {

// frame size includes total offset from header and trailer

return header.payloadSize + ParserT::totalOffset;

};

std::vector<typename ParserT::FrameInfo> frames;

auto insert = [&frames](typename ParserT::FrameInfo& info) {

frames.emplace_back(info);

return true;

};

ParserT parser;

auto result = parser.parse(tf.buffer.get(), tf.size(),

checkHeader,

getFrameSize,

insert);

BOOST_REQUIRE(result == 3);

BOOST_REQUIRE(frames.size() == 3);

BOOST_CHECK(memcmp(frames[0].payload, "lotsofsillydata", frames[0].length) == 0);

BOOST_CHECK(memcmp(frames[1].payload, "test", frames[1].length) == 0);

BOOST_CHECK(memcmp(frames[2].payload, "dummydata", frames[2].length) == 0);

}

BOOST_AUTO_TEST_CASE(test_forwardparser_no_frames)

{

using FrameT = o2::algorithm::Composite<Header>;

// note: the length of the data is set in the header word

using TestFrame = o2::algorithm::StaticSequenceAllocator;

TestFrame tf(FrameT(16, "lotsofsillydata"),

FrameT(5, "test"),

FrameT(10, "dummydata"));

using ParserT = o2::algorithm::ForwardParser<typename FrameT::HeaderType,

typename FrameT::TrailerType>;

auto checkHeader = [](const typename FrameT::HeaderType& header) {

// simply indicate invalid header to read no frames

return false;

};

auto getFrameSize = [](const typename ParserT::HeaderType& header) {

// frame size includes total offset from header and trailer

return header.payloadSize + ParserT::totalOffset;

};

std::vector<typename ParserT::FrameInfo> frames;

auto insert = [&frames](typename ParserT::FrameInfo& info) {

frames.emplace_back(info);

return true;

};

ParserT parser;

auto result = parser.parse(tf.buffer.get(), tf.size(),

checkHeader,

getFrameSize,

insert);

// check that there are really no frames found

BOOST_REQUIRE(result == 0);

}

BOOST_AUTO_TEST_CASE(test_forwardparser_format_error)

{

using FrameT = o2::algorithm::Composite<Header>;

// note: the length of the data is set in the header word

using TestFrame = o2::algorithm::StaticSequenceAllocator;

TestFrame tf(FrameT(16, "lotsofsillydata"),

FrameT(4, "test"), // <- note wrong size

FrameT(10, "dummydata"));

using ParserT = o2::algorithm::ForwardParser<typename FrameT::HeaderType,

typename FrameT::TrailerType>;

auto checkHeader = [](const typename FrameT::HeaderType& header) {

return header.identifier == 0xdeadbeef;

};

auto getFrameSize = [](const typename ParserT::HeaderType& header) {

// frame size includes total offset from header and trailer

return header.payloadSize + ParserT::totalOffset;

};

std::vector<typename ParserT::FrameInfo> frames;

auto insert = [&frames](typename ParserT::FrameInfo& info) {

frames.emplace_back(info);

return true;

};

ParserT parser;

auto result = parser.parse(tf.buffer.get(), tf.size(),

checkHeader,

getFrameSize,

insert);

BOOST_REQUIRE(result == -1);

}

BOOST_AUTO_TEST_CASE(test_reverseparser)

{

using FrameT = o2::algorithm::Composite<Header, SizedTrailer>;

// note: the length of the data is set in the trailer word

using TestFrame = o2::algorithm::StaticSequenceAllocator;

TestFrame tf(FrameT(0, "lotsofsillydata", {16, 0xaa}),

FrameT(0, "test", {5, 0xcc}),

FrameT(0, "dummydata", {10, 0x33}));

using ParserT = o2::algorithm::ReverseParser<typename FrameT::HeaderType,

typename FrameT::TrailerType>;

auto checkHeader = [](const typename FrameT::HeaderType& header) {

return header.identifier == 0xdeadbeef;

};

auto checkTrailer = [](const typename FrameT::TrailerType& trailer) {

return trailer.identifier == 0xaaffee00;

};

auto getFrameSize = [](const typename ParserT::TrailerType& trailer) {

return trailer.payloadSize + ParserT::totalOffset;

};

std::vector<typename ParserT::FrameInfo> frames;

auto insert = [&frames](const typename ParserT::FrameInfo& info) {

frames.emplace_back(info);

return true;

};

ParserT parser;

auto result = parser.parse(tf.buffer.get(), tf.size(),

checkHeader,

checkTrailer,

getFrameSize,

insert);

BOOST_REQUIRE(result == 3);

BOOST_REQUIRE(frames.size() == 3);

BOOST_CHECK(memcmp(frames[2].payload, "lotsofsillydata", frames[2].length) == 0);

BOOST_CHECK(memcmp(frames[1].payload, "test", frames[1].length) == 0);

BOOST_CHECK(memcmp(frames[0].payload, "dummydata", frames[0].length) == 0);

}