stuff-from-scratch/test/compression/TestStreamCompressor.cpp

#include <iostream>

#include "BufferBitStream.h"
#include "HuffmanEncoder.h"
#include "RunLengthEncoder.h"
#include "Lz77Encoder.h"

#include "StringUtils.h"

#include "TestFramework.h"

TEST_CASE(TestRunLengthEncoder, "compression")
{
    std::string test_data = "BCAAAADDDCCACACAC";

    RunLengthEncoder encoder;
    auto encoded = encoder.encode(StringUtils::toBytes(test_data));

    //std::cout << "Encoded: " << encoded << std::endl;

    auto decoded = encoder.decode(encoded);

    //std::cout << "Decoded: " << decoded << std::endl;
}

TEST_CASE(TestHuffmanEncoder, "compression")
{
    //std::string testData = "BCAADDDCCACACAC";
    //std::vector<unsigned char> stream(testData.begin(), testData.end());

    std::unordered_map<unsigned char, unsigned> counts;
    counts['A'] = 1;
    counts['B'] = 1;
    counts['C'] = 1;
    counts['D'] = 2;
    counts['E'] = 3;
    counts['F'] = 5;
    counts['G'] = 5;
    counts['H'] = 12;

    HuffmanEncoder encoder;
    encoder.encode(counts);
}

TEST_CASE(TestLz77Encoder, "compression")
{
    std::string test_data = "sir sid eastman easily teases sea sick seals";
    //std::string test_data = "sir sid eastman";

    BufferBitStream input_stream;
    input_stream.setBuffer(StringUtils::toBytes(test_data));

    BufferBitStream output_stream;
    Lz77Encoder encoder(&input_stream, &output_stream);
    encoder.encode();

    //std::cout << "Encoded: " << StringUtils::toString(output_stream.getBuffer()) << std::endl;

    //auto decoded = encoder.decode(encoded);

    //std::cout << "Decoded: " << decoded << std::endl;
}