zip_unittest.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */

#include <mrpt/compress.h>
#include <mrpt/math/ops_vectors.h>
#include <gtest/gtest.h>

using namespace mrpt;
using namespace mrpt::utils;
using namespace mrpt::math;
using namespace std;

TEST(Compress, DataBlockGZ)
{
        const size_t N = 20000;

        // Create a random "input" data vector
        vector_byte in_data(N);
        for (size_t i = 0; i < N; i++)
                in_data[i] = static_cast<uint8_t>(
                        i);  // We need low entropy for compression to have something to do!

        // Compress it:
        vector_byte compress_data;

        //      cout << "[test_compress_main] Invoking compress_gz_data_block" << endl;

        if (!mrpt::compress::zip::compress_gz_data_block(in_data, compress_data))
                GTEST_FAIL() << "Error in compress_gz_data_block\n";

        //      cout << "Compressed gz-data: " << N << " -> " << compress_data.size() <<
        //" bytes." << endl;

        vector_byte recovered_data;
        if (!mrpt::compress::zip::decompress_gz_data_block(
                        compress_data, recovered_data))
                GTEST_FAIL() << "Error in decompress_gz_data_block\n";

        //      cout << "Decompressed data: " << recovered_data.size() << " bytes." <<
        // endl;

        uint8_t err = mrpt::math::sum(recovered_data - in_data);

        EXPECT_EQ(0, err)
                << "Differences after compressing & decompressing with GZ\n";
}