public void BitRate_EvaluateStatistics()
{
var helper = new HuffmanStatisticsHelper();
uint inputFileSize = 10;
uint outputFileSize = 5;
uint headerSize = 5;
BitRateStatistics expectedStatistics = new BitRateStatistics();
expectedStatistics.InputFileBitRate = 8;
expectedStatistics.OutputFileBitRate = 4;
expectedStatistics.OutputFileBitRateWithHeader = 8;
expectedStatistics.BitRateProportion = 0.5;
expectedStatistics.BitRateProportionWithHeader = 1;
BitRateStatistics statistics = helper.EvaluateBitRateStatistics(symbolsCount, inputFileSize, outputFileSize, headerSize);
Assert.AreEqual(expectedStatistics.InputFileBitRate, statistics.InputFileBitRate);
Assert.AreEqual(expectedStatistics.OutputFileBitRate, statistics.OutputFileBitRate);
Assert.AreEqual(expectedStatistics.OutputFileBitRateWithHeader, statistics.OutputFileBitRateWithHeader);
Assert.AreEqual(expectedStatistics.BitRateProportion, statistics.BitRateProportion);
Assert.AreEqual(expectedStatistics.BitRateProportionWithHeader, statistics.BitRateProportionWithHeader);
}
public void Entropy_Evaluate()
{
var helper = new HuffmanStatisticsHelper();
var output = helper.EvaluateEntropy(symbolStatisticsList);
Assert.AreEqual(1.485, output);
}
public void CreateSymbolsStatisticsListFormDictionary()
{
var helper = new HuffmanStatisticsHelper();
List <SymbolStatistics> result = helper.CreateSymbolStatisticsList(symbolsMap, symbolsCount);
Assert.AreEqual(symbolStatisticsList.Count, result.Count);
for (int i = 0; i < symbolStatisticsList.Count; i++)
{
Assert.AreEqual(symbolStatisticsList[i].Probability, result[i].Probability);
Assert.AreEqual(symbolStatisticsList[i].InputFileBitsLength, result[i].InputFileBitsLength);
Assert.AreEqual(symbolStatisticsList[i].OutputFileBitsLength, result[i].OutputFileBitsLength);
}
}
public void BitsMean_EvaluateStatistics()
{
var helper = new HuffmanStatisticsHelper();
BitsMeanStatistics expectedStatistics = new BitsMeanStatistics();
expectedStatistics.InputFileBitsMean = 2;
expectedStatistics.OutputFileBitsMean = 1;
expectedStatistics.BitsMeanProportion = 0.5;
BitsMeanStatistics statistics = helper.EvaluateBitsMeanStatistics(symbolStatisticsList);
Assert.AreEqual(expectedStatistics.InputFileBitsMean, statistics.InputFileBitsMean);
Assert.AreEqual(expectedStatistics.OutputFileBitsMean, statistics.OutputFileBitsMean);
Assert.AreEqual(expectedStatistics.BitsMeanProportion, statistics.BitsMeanProportion);
}
public void FilesSize_EvaluateStatistics()
{
var helper = new HuffmanStatisticsHelper();
uint inputFileSize = 100;
uint outputFileSize = 50;
FilesSizeStatistics expectedStatistics = new FilesSizeStatistics();
expectedStatistics.InputFileSize = 100;
expectedStatistics.OutputFileSize = 50;
expectedStatistics.FilesSizeProportion = 0.5;
FilesSizeStatistics statistics = helper.EvaluateFilesSizeStatistics(inputFileSize, outputFileSize);
Assert.AreEqual(expectedStatistics.InputFileSize, statistics.InputFileSize);
Assert.AreEqual(expectedStatistics.OutputFileSize, statistics.OutputFileSize);
Assert.AreEqual(expectedStatistics.FilesSizeProportion, statistics.FilesSizeProportion);
}
public void FileSize_EvaluateStatistics()
{
var helper = new HuffmanStatisticsHelper();
uint inputFileSize = 100;
uint outputFileSize = 50;
uint headerSize = 10;
FileSizeStatistics expectedStatistics = new FileSizeStatistics();
expectedStatistics.InputFileSize = 100;
expectedStatistics.OutputFileSize = 50;
expectedStatistics.OutputFileSizeWithHeader = 60;
expectedStatistics.CompressionRatio = 0.5;
expectedStatistics.CompressionRatioWithHeader = 0.6;
FileSizeStatistics statistics = helper.EvaluateFileSizeStatistics(inputFileSize, outputFileSize, headerSize);
Assert.AreEqual(expectedStatistics.InputFileSize, statistics.InputFileSize);
Assert.AreEqual(expectedStatistics.OutputFileSize, statistics.OutputFileSize);
Assert.AreEqual(expectedStatistics.OutputFileSizeWithHeader, statistics.OutputFileSizeWithHeader);
Assert.AreEqual(expectedStatistics.CompressionRatio, statistics.CompressionRatio);
Assert.AreEqual(expectedStatistics.CompressionRatioWithHeader, statistics.CompressionRatioWithHeader);
}
