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/*
* Copyright (C) 2020 Veloman Yunkan
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "decoderstreamreader.h"
#include "buffer_reader.h"
#include "gtest/gtest.h"
namespace
{
template<class CompressionInfo>
std::string
compress(const std::string& data)
{
zim::Compressor<CompressionInfo> compressor(data.size());
compressor.init(const_cast<char*>(data.c_str()));
compressor.feed(data.c_str(), data.size());
zim::zsize_t comp_size;
const auto comp_data = compressor.get_data(&comp_size);
return std::string(comp_data.get(), comp_size.v);
}
std::string operator*(const std::string& s, unsigned N)
{
std::string result;
for (unsigned i=0; i<N; i++)
result += s;
return result;
}
std::string toString(const zim::Buffer& buffer)
{
return std::string(buffer.data(), buffer.size().v);
}
template<typename T>
class DecoderStreamReaderTest : public testing::Test {
protected:
typedef T CompressionInfo;
};
using CompressionTypes = ::testing::Types<
ZSTD_INFO
>;
TYPED_TEST_CASE(DecoderStreamReaderTest, CompressionTypes);
TYPED_TEST(DecoderStreamReaderTest, justCompressedData) {
typedef typename TestFixture::CompressionInfo CompressionInfo;
const int N = 10;
const std::string s("DecoderStreamReader should work correctly");
const std::string compDataStr = compress<CompressionInfo>(s*N);
auto compData = zim::Buffer::makeBuffer(compDataStr.data(), zim::zsize_t(compDataStr.size()));
auto compReader = std::make_shared<zim::BufferReader>(compData);
zim::DecoderStreamReader<CompressionInfo> dds(compReader);
for (int i=0; i<N; i++)
{
auto decompReader = dds.sub_reader(zim::zsize_t(s.size()));
ASSERT_EQ(s, toString(decompReader->get_buffer(zim::offset_t(0), zim::zsize_t(s.size())))) << "i: " << i;
}
}
TYPED_TEST(DecoderStreamReaderTest, compressedDataFollowedByGarbage) {
typedef typename TestFixture::CompressionInfo CompressionInfo;
const int N = 10;
const std::string s("DecoderStreamReader should work correctly");
std::string compDataStr = compress<CompressionInfo>(s*N);
compDataStr += std::string(10, '\0');
auto compData = zim::Buffer::makeBuffer(compDataStr.data(), zim::zsize_t(compDataStr.size()));
auto compReader = std::make_shared<zim::BufferReader>(compData);
zim::DecoderStreamReader<CompressionInfo> dds(compReader);
for (int i=0; i<N; i++)
{
auto decompReader = dds.sub_reader(zim::zsize_t(s.size()));
ASSERT_EQ(s, toString(decompReader->get_buffer(zim::offset_t(0), zim::zsize_t(s.size())))) << "i: " << i;
}
}
} // unnamed namespace
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