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StreamTests.cs
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StreamTests.cs
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using NUnit.Framework;
using System;
using System.IO;
using System.Linq;
namespace EasyCompressor.Tests.StreamTests;
public class StreamTests(ICompressor compressor) : TestBase(compressor)
{
//[Test]
//public void Compress_Large_Data()
//{
// var size2GB = 2_147_483_648;
// var filePath = "D:\\large_file.dump";
// try
// {
// CreateDumpFile(filePath, size2GB);
// var file = File.OpenRead(filePath);
// var output = File.OpenWrite(filePath + ".7z");
// var compressor = new LZMACompressor();
// compressor.Compress(file, output);
// }
// finally
// {
// File.Delete(filePath);
// }
//}
//[Test]
//public void Decompress_Large_Data()
//{
// var path = "D:\\large_data";
// var compressor = new LZMACompressor();
// var file = File.OpenRead(path + "_compressed");
// var output = File.OpenWrite(path + "_decompressed");
// compressor.Decompress(file, output);
//}
[Test]
public void Compress_NullValue1_Should_Throws_ArgumentNullException()
{
void action() => Compressor.Compress(null, new MemoryStream());
Assert.Throws<ArgumentNullException>(action);
}
[Test]
public void Compress_NullValue2_Should_Throws_ArgumentNullException()
{
void action() => Compressor.Compress(new MemoryStream(), null);
Assert.Throws<ArgumentNullException>(action);
}
[Test]
public void Decompress_NullValue1_Should_Throws_ArgumentNullException()
{
void action() => Compressor.Decompress(null, new MemoryStream());
Assert.Throws<ArgumentNullException>(action);
}
[Test]
public void Decompress_NullValue2_Should_Throws_ArgumentNullException()
{
void action() => Compressor.Decompress(new MemoryStream(), null);
Assert.Throws<ArgumentNullException>(action);
}
[Test]
public void Compress_Should_DoesNotThrow_Exception()
{
using var inputStream = new MemoryStream(ObjectBytes);
using var outputStream = new MemoryStream();
void action() => Compressor.Compress(inputStream, outputStream);
Assert.DoesNotThrow(action);
}
[Test]
public void CompressedResult_ShouldNot_NullOrEmpty()
{
using var inputStream = new MemoryStream(ObjectBytes);
using var compressedStream = new MemoryStream();
Compressor.Compress(inputStream, compressedStream);
var compressedBytes = compressedStream.GetTrimmedBuffer();
Assert.That(compressedBytes, Is.Not.Null);
Assert.That(compressedBytes, Is.Not.Empty);
}
[Test]
public void Decompress_Should_DoesNotThrow_Exception()
{
using var inputStream = new MemoryStream(ObjectBytes);
using var outputStream = new MemoryStream();
Compressor.Compress(inputStream, outputStream);
var compressedBytes = outputStream.GetTrimmedBuffer();
using var inputStream2 = new MemoryStream(compressedBytes);
using var outputStream2 = new MemoryStream();
void action() => Compressor.Decompress(inputStream2, outputStream2);
Assert.DoesNotThrow(action);
}
[Test]
public void DecompressedResult_ShouldNot_NullOrEmpty()
{
using var inputStream = new MemoryStream(ObjectBytes);
using var outputStream = new MemoryStream();
Compressor.Compress(inputStream, outputStream);
var compressedBytes = outputStream.GetTrimmedBuffer();
using var inputStream2 = new MemoryStream(compressedBytes);
using var outputStream2 = new MemoryStream();
Compressor.Decompress(inputStream2, outputStream2);
var decompressedBytes = outputStream2.GetTrimmedBuffer();
Assert.That(decompressedBytes, Is.Not.Null);
Assert.That(decompressedBytes, Is.Not.Empty);
}
[Test]
public void DecompressedResult_Should_SequenceEqual_With_SourceBytes()
{
using var inputStream = new MemoryStream(ObjectBytes);
using var outputStream = new MemoryStream();
Compressor.Compress(inputStream, outputStream);
var compressedBytes = outputStream.GetTrimmedBuffer();
using var inputStream2 = new MemoryStream(compressedBytes);
using var outputStream2 = new MemoryStream();
Compressor.Decompress(inputStream2, outputStream2);
var decompressedBytes = outputStream2.GetTrimmedBuffer();
Assert.That(decompressedBytes.SequenceEqual(ObjectBytes), Is.True);
}
[Test]
public void CompressAndDecompress_ShouldNot_Close_BothStreams()
{
using var inputStream = new MemoryStream(ObjectBytes);
using var outputStream = new MemoryStream();
Compressor.Compress(inputStream, outputStream);
Assert.DoesNotThrow(() => inputStream.Position = 0);
Assert.DoesNotThrow(() => outputStream.Position = 0);
using var outputStream2 = new MemoryStream();
Compressor.Decompress(outputStream, outputStream2);
Assert.DoesNotThrow(() => outputStream.Position = 0);
Assert.DoesNotThrow(() => outputStream2.Position = 0);
}
#region CreateDumpFile
//private static void CreateDumpFile(string filePath, long fileSize)
//{
// using var fileStream = new FileStream(filePath, FileMode.Create, FileAccess.Write);
// CreateDumpFile(fileStream, fileSize);
//}
//private static void CreateDumpFile(FileStream fileStream, long fileSize)
//{
// const int maxArraySize = 2_147_483_591;
// if (fileSize <= maxArraySize)
// {
// byte[] buffer = new byte[fileSize];
// fileStream.Write(buffer);
// }
// else
// {
// //improve implementation
// long currentFileSize = 0;
// while (currentFileSize < fileSize)
// {
// byte[] buffer = new byte[1024];
// fileStream.Write(buffer);
// currentFileSize += buffer.Length;
// }
// }
// fileStream.FlushAsync();
//}
#endregion
}