private void TestRandomSetLengthOperation(FileStream targetStream, AlignedWriteStream writeStream, long length)
{
long position = targetStream.Position;
targetStream.SetLength(length);
writeStream.SetLength(length);
Assert.AreEqual(targetStream.Position, writeStream.Position, string.Format("Position mismatch (Original: {0})", position));
Assert.AreEqual(targetStream.Length, writeStream.Length, "Length mismatch");
}
private void TestAlignedWriteStreamLength(string targetFilename)
{
var buffer = new byte[1024];
using (FileStream targetFileStream = new FileStream(targetFilename, FileMode.Create, FileAccess.ReadWrite, FileShare.Write, 8,
FileOptions.WriteThrough | Win32.FileFlagNoBuffering))
{
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream))
{
writeStream.Write(buffer, 0, 1000);
Assert.AreEqual(1000, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1000, writeStream.Length, "Invlid length");
Assert.AreEqual(512, targetFileStream.Length, "Invlid length");
writeStream.SetLength(1024);
Assert.AreEqual(1000, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1024, writeStream.Length, "Invlid length");
Assert.AreEqual(1024, targetFileStream.Length, "Invlid length");
writeStream.SetLength(512);
Assert.AreEqual(512, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(512, writeStream.Length, "Invlid length");
Assert.AreEqual(512, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 0, 1000);
Assert.AreEqual(1512, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1512, writeStream.Length, "Invlid length");
Assert.AreEqual(1024, targetFileStream.Length, "Invlid length");
writeStream.SetLength(2048);
Assert.AreEqual(1512, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(2048, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 345, 38);
Assert.AreEqual(1550, writeStream.Position, "Invlid position");
Assert.AreEqual(1536, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(2048, targetFileStream.Length, "Invlid length");
writeStream.SetLength(0);
Assert.AreEqual(0, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(0, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
writeStream.Flush();
Assert.AreEqual(0, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(0, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
}
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Length, "Invlid position");
}
}