public void UnpackingWorks(LzwGifToolsTestCase testCase)
{
StreamUnpacker unpacker = new StreamUnpacker(testCase.LzwMinimumCodeSize);
List <int> lzwCompressedCodeStream = unpacker.Unpack(testCase.PackedBytes);
CollectionAssert.AreEqual(testCase.LzwCompressedCodeStream, lzwCompressedCodeStream);
}
public void PackingWorks(LzwGifToolsTestCase testCase)
{
StreamPacker packer = new StreamPacker(testCase.LzwMinimumCodeSize);
List <byte> packedBytes = packer.Pack(testCase.LzwCompressedCodeStream);
CollectionAssert.AreEqual(testCase.PackedBytes, packedBytes);
}
public void DecodingWorks(LzwGifToolsTestCase testCase)
{
Decoder decoder = new Decoder(testCase.LzwMinimumCodeSize);
List <int> codeStream = decoder.Decode(testCase.PackedBytes);
CollectionAssert.AreEqual(testCase.CodeStream, codeStream);
}
public void EncodingWorks(LzwGifToolsTestCase testCase)
{
Encoder encoder = new Encoder(testCase.LzwMinimumCodeSize);
List <byte> packedBytes = encoder.Encode(testCase.CodeStream);
CollectionAssert.AreEqual(testCase.PackedBytes, packedBytes);
}
public void LzwEncodingIsReversible(LzwGifToolsTestCase testCase) // and decoding
{
LzwCompressor compressor = new LzwCompressor(testCase.LzwMinimumCodeSize);
LzwDecompressor decompressor = new LzwDecompressor(testCase.LzwMinimumCodeSize);
List <int> lzwCompressedStream = compressor.Compress(testCase.CodeStream);
List <int> lzwDecompressedStream = decompressor.Decompress(lzwCompressedStream);
CollectionAssert.AreEqual(testCase.CodeStream, lzwDecompressedStream);
}
public void StreamPackingIsReversible(LzwGifToolsTestCase testCase)
{
StreamUnpacker unpacker = new StreamUnpacker(testCase.LzwMinimumCodeSize);
StreamPacker packer = new StreamPacker(testCase.LzwMinimumCodeSize);
List <int> lzwCompressedCodeStream = unpacker.Unpack(testCase.PackedBytes);
List <byte> packedBytes = new List <byte>();
packedBytes = packer.Pack(lzwCompressedCodeStream);
CollectionAssert.AreEqual(testCase.PackedBytes, packedBytes);
}
public void AllMethodsWork(LzwGifToolsTestCase testCase)
{
LzwCompressor compressor = new LzwCompressor(testCase.LzwMinimumCodeSize);
StreamPacker packer = new StreamPacker(testCase.LzwMinimumCodeSize);
StreamUnpacker unpacker = new StreamUnpacker(testCase.LzwMinimumCodeSize);
LzwDecompressor decompressor = new LzwDecompressor(testCase.LzwMinimumCodeSize);
List <int> lzwEncodedCodeStream = compressor.Compress(testCase.CodeStream);
List <byte> packedBytes = packer.Pack(lzwEncodedCodeStream);
List <int> lzwEncodedCodeStream2 = unpacker.Unpack(packedBytes);
List <int> codeStream = decompressor.Decompress(lzwEncodedCodeStream2);
CollectionAssert.AreEqual(testCase.CodeStream, codeStream);
}
public void ExportLzwCompressedCodeStreamToTextFile(LzwGifToolsTestCase testCase)
{
LzwCompressor compressor = new LzwCompressor(testCase.LzwMinimumCodeSize);
List <int> lzwCompressedStream = compressor.Compress(testCase.CodeStream);
using (StreamWriter sw = File.CreateText(Config.WorkingDirectory + @"/" + "lzw-compressed-code-stream.txt"))
{
int index = 0;
foreach (int i in lzwCompressedStream)
{
index++;
sw.Write(string.Format("{0} ", i));
if (index % 8 == 0)
{
sw.WriteLine("");
}
}
}
}
