public void Compress_Decompress_ShortText(string p_HeaderIdentification)
{
string text = "This is testing content for compressing";
using (var streamWithData = new MemoryStream(Encoding.UTF8.GetBytes(text)))
using (var streamReadCompress = new StreamReadCompress(streamWithData, p_HeaderIdentification))
using (var streamWithCompressedData = new MemoryStream())
{
streamReadCompress.CopyTo(streamWithCompressedData);
streamWithCompressedData.Position = 0;
using (StreamReadDecompress streamReadDecompress = new StreamReadDecompress(streamWithCompressedData))
using (var streamWithUncompressedData = new MemoryStream())
{
streamReadDecompress.CopyTo(streamWithUncompressedData);
string uncompressed = Encoding.UTF8.GetString(streamWithUncompressedData.ToArray());
Assert.AreEqual(text, uncompressed);
}
}
}
public void Compress_Decompress_1MB_RandomData_CompressedBufferBiggerThanOriginalBufferData_ReturnNotCompressedData_DecompressMustReturnOriginalData(string p_HeaderIdentification)
{
Random random = new Random();
using (var streamWithData = new MemoryStream())
{
//Create 1MB MemoryStream with random values
byte[] randomBuffer = new byte[1024];
for (int i = 0; i < 1024; i++)
{
random.NextBytes(randomBuffer);
streamWithData.Write(randomBuffer, 0, randomBuffer.Length);
}
streamWithData.Position = 0;
//Compress
using (var streamReadCompress = new StreamReadCompress(streamWithData, p_HeaderIdentification))
using (var streamWithCompressedData = new MemoryStream())
{
streamReadCompress.CopyTo(streamWithCompressedData);
//not compressed data - same as original
Assert.IsNull(streamReadCompress.LastReadUsedHeaderIdentification);
Assert.AreEqual(streamWithData.Length, streamWithCompressedData.Length);
//Decompress
streamWithCompressedData.Position = 0;
using (StreamReadDecompress streamReadDecompress = new StreamReadDecompress(streamWithCompressedData))
using (var streamWithUncompressedData = new MemoryStream())
{
streamReadDecompress.CopyTo(streamWithUncompressedData);
//Assert streamWithData = streamWithUncompressedData
streamWithData.Position = 0;
streamWithUncompressedData.Position = 0;
Assert.AreEqual(streamWithData.Length, streamWithUncompressedData.Length, "Decompressed stream must be same length as original data");
for (int i = 0; i < streamWithData.Position; i++)
{
Assert.AreEqual(streamWithData.ReadByte(), streamWithUncompressedData.ReadByte(), "Content of decompressed stream is different");
}
}
}
}
}
public void Compress_Decompress_1MB_TextData_ReturnCompressedData_DecompressMustReturnOriginalData(string p_HeaderIdentification)
{
string text = "This is testing content for compressing";
//using (var streamWithData = new FileStream(@"D:\1original.txt", FileMode.Create))
using (var streamWithData = new MemoryStream())
{
//Create 1MB MemoryStream with random values
while (streamWithData.Position <= 1024 * 1024)
{
streamWithData.Write(Encoding.UTF8.GetBytes(text), 0, text.Length);
}
streamWithData.Position = 0;
//Compress
using (var streamReadCompress = new StreamReadCompress(streamWithData, p_HeaderIdentification))
//using (var streamWithCompressedData = new FileStream(@"compressed.dat", FileMode.Create))
using (var streamWithCompressedData = new MemoryStream())
{
streamReadCompress.CopyTo(streamWithCompressedData);
//not compressed data - same as original
Assert.AreEqual(p_HeaderIdentification, streamReadCompress.LastReadUsedHeaderIdentification);
//Decompress
streamWithCompressedData.Position = 0;
using (StreamReadDecompress streamReadDecompress = new StreamReadDecompress(streamWithCompressedData))
//using (var streamWithUncompressedData = new FileStream(@"D:\1decompress.txt", FileMode.Create))
using (var streamWithUncompressedData = new MemoryStream())
{
streamReadDecompress.CopyTo(streamWithUncompressedData);
//Assert streamWithData = streamWithUncompressedData
streamWithData.Position = 0;
streamWithUncompressedData.Position = 0;
Assert.AreEqual(streamWithData.Length, streamWithUncompressedData.Length, "Decompressed stream must be same length as original data");
for (int i = 0; i < streamWithData.Position; i++)
{
Assert.AreEqual(streamWithData.ReadByte(), streamWithUncompressedData.ReadByte(), "Content of decompressed stream is different");
}
}
}
}
}
