public void ShouldGenerateWhenOneChunk()
{
// Arrange
var file = new byte[16 + 5]
{
/* compressedSize */ 5, 0, 0, 0, /* source.offset */ 0, 0, 0, 0, 0, 0, 0, 0, /* source.size */ 10, 0, 0, 0,
1, 2, 3, 4, 5,
};
var reader = new InmemoryReader(file);
var generator = new DecompressionInfoGenerator(reader);
// Act
var chunks = new List <ChunkDecompressionInfo>();
while (generator.TryDequeue(out var info))
{
chunks.Add(info);
}
// Assert
Assert.Collection(chunks,
info =>
{
Assert.Equal(16L, info.source.offset);
Assert.Equal(5, info.source.size);
Assert.Equal(0L, info.target.offset);
Assert.Equal(10, info.target.size);
});
}
public void ShouldDecompress()
{
// Arrange
var file = new byte[16 + 10 + 16 + 2]
{
/* compressedSize */ 10, 0, 0, 0, /* source.offset */ 0, 0, 0, 0, 0, 0, 0, 0, /* source.size */ 10, 0, 0, 0,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
/* compressedSize */ 2, 0, 0, 0, /* source.offset */ 10, 0, 0, 0, 0, 0, 0, 0, /* source.size */ 2, 0, 0, 0,
11, 12
};
var reader = new InmemoryReader(file);
var decompressor = new PassThroughDecompressor();
var output = new byte[12];
var writer = new InmemoryWriter(output);
var fileDecompressor = new FileDecompressor(
new DecompressionInfoGenerator(reader),
reader,
decompressor,
writer);
// Act
fileDecompressor.Execute();
// Assert
Assert.Equal(Enumerable.Range(1, 12).Select(i => (byte)i), output);
}
public void ShouldCompress()
{
// Arrange
var fileService = new Mock <IFileService>();
fileService.Setup(m => m.GetSize(It.IsAny <string>())).Returns(12);
var file = new byte[12] {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
};
var reader = new InmemoryReader(file);
var compressor = new Mocks.PassThroughCompressor();
var output = new byte[44];
var writer = new InmemoryWriter(output);
var fileCompressor = new FileCompressor(
new FileCompressorOptions {
Size = 10
},
new CompressionInfoGenerator(
new CompressorInfoGeenratorOptions {
Path = @"C:\file.txt", Size = 10
},
fileService.Object),
reader,
compressor,
writer);
// Act
fileCompressor.Execute();
// Assert
Assert.Equal(
new byte[16 + 10 + 16 + 2]
{
/* compressedSize */ 10, 0, 0, 0, /* source.offset */ 0, 0, 0, 0, 0, 0, 0, 0, /* source.size */ 10, 0, 0, 0,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
/* compressedSize */ 2, 0, 0, 0, /* source.offset */ 10, 0, 0, 0, 0, 0, 0, 0, /* source.size */ 2, 0, 0, 0,
11, 12
}, output);
}
public void ShouldNotGenerateWhenEmpty()
{
// Arrange
var file = new byte[0];
var reader = new InmemoryReader(file);
var generator = new DecompressionInfoGenerator(reader);
// Act
var chunks = new List <ChunkDecompressionInfo>();
while (generator.TryDequeue(out var info))
{
chunks.Add(info);
}
// Assert
Assert.Empty(chunks);
}