private void TestRandomFlushOperation(AlignedWriteStream writeStream, FileStream targetStream)
{
writeStream.Flush();
targetStream.Flush();
Assert.AreEqual(targetStream.Position, writeStream.Position, "Position mismatch");
Assert.AreEqual(targetStream.Length, writeStream.Length, "Length mismatch");
}
private void TestWriteStreamRandomOperations(int count, string inputfile, string outputfile1, string outputfile2, int alignmentSize,
Func<FileStream, AlignedWriteStream, byte[], WriteSreamOperations> testOperation)
{
byte[] data = File.ReadAllBytes(inputfile);
List<Tuple<WriteSreamOperations, long, long, long, long, long, long>> operations =
new List<Tuple<WriteSreamOperations, long, long, long, long, long, long>>();
using (FileStream targetFileStream1 = new FileStream(outputfile1, FileMode.Create, FileAccess.Write, FileShare.ReadWrite))
{
using (FileStream targetFileStream2 = new FileStream(outputfile2, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite, 8,
FileOptions.WriteThrough | Win32.FileFlagNoBuffering))
{
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream2, alignmentSize))
{
while (0 < count)
{
long position = targetFileStream1.Position;
long length = targetFileStream1.Length;
WriteSreamOperations operation = testOperation(targetFileStream1, writeStream, data);
targetFileStream1.Flush();
byte[] data1 = this.ReadFile(outputfile1);
byte[] data2 = this.ReadFile(outputfile2);
if (Math.Abs(data1.Length - data2.Length) > alignmentSize * 2)
{
writeStream.Flush();
data2 = this.ReadFile(outputfile2);
}
Assert.IsTrue(Math.Abs(data1.Length - data2.Length) < alignmentSize*2, "Length mismatch");
int i = 0;
if (data1.Length < data2.Length)
{
i = this.FindNoneZero(data2, data1.Length);
Assert.IsTrue(-1 == i, "Junk found");
}
i = this.CompareBuffers(data1, data2, 0, Math.Min(data1.Length, data2.Length));
if (-1 != i)
{
writeStream.Flush();
data2 = this.ReadFile(outputfile2);
if (data1.Length < data2.Length)
{
i = this.FindNoneZero(data2, data1.Length);
Assert.IsTrue(-1 == i, "Junk found");
}
i = this.CompareBuffers(data1, data2, 0, Math.Min(data1.Length, data2.Length));
Assert.IsTrue(-1 == i, "Data mismatch");
}
count--;
operations.Add(new Tuple<WriteSreamOperations, long, long, long, long, long, long>(
operation, position, length, targetFileStream1.Position, targetFileStream1.Length,
targetFileStream2.Position, targetFileStream2.Length));
}
}
}
}
byte[] fdata1 = this.ReadFile(outputfile1);
byte[] fdata2 = this.ReadFile(outputfile2);
Assert.IsTrue(Math.Abs(fdata1.Length - fdata2.Length) < alignmentSize * 2, "Length mismatch");
Assert.IsTrue(-1 == this.CompareBuffers(fdata1, fdata2, 0, fdata1.Length), "Data 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");
}
}
