/// <summary>
/// Single put blob and get blob
/// </summary>
/// <param name="blobSize">The blob size.</param>
/// <param name="bufferSize">The output buffer size.</param>
/// <param name="bufferOffset">The output buffer offset.</param>
/// <param name="blobOffset">The blob offset.</param>
/// <param name="length">Length of the data range to download.</param>
/// <param name="option">0 - Sync, 1 - APM and 2 - APM overload.</param>
private void DoDownloadRangeToByteArray(ICloudBlob blob, int blobSize, int bufferSize, int bufferOffset, long? blobOffset, long? length, int option)
{
int downloadLength;
byte[] buffer = GetRandomBuffer(blobSize);
byte[] resultBuffer = new byte[bufferSize];
byte[] resultBuffer2 = new byte[bufferSize];
using (MemoryStream originalBlob = new MemoryStream(buffer))
{
blob.UploadFromStream(originalBlob);
}
if (option == 0)
{
downloadLength = blob.DownloadRangeToByteArray(resultBuffer, bufferOffset, blobOffset, length);
}
else if (option == 1)
{
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
ICancellableAsyncResult result = blob.BeginDownloadRangeToByteArray(resultBuffer,
bufferOffset,
blobOffset,
length,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
downloadLength = blob.EndDownloadRangeToByteArray(result);
}
}
else
{
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
OperationContext context = new OperationContext();
ICancellableAsyncResult result = blob.BeginDownloadRangeToByteArray(resultBuffer,
bufferOffset,
blobOffset,
length,
null,
null,
context,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
downloadLength = blob.EndDownloadRangeToByteArray(result);
}
}
int downloadSize = Math.Min(blobSize - (int)(blobOffset.HasValue ? blobOffset.Value : 0), bufferSize - bufferOffset);
if (length.HasValue && (length.Value < downloadSize))
{
downloadSize = (int)length.Value;
}
Assert.AreEqual(downloadSize, downloadLength);
for (int i = 0; i < bufferOffset; i++)
{
Assert.AreEqual(0, resultBuffer[i]);
}
for (int j = 0; j < downloadLength; j++)
{
Assert.AreEqual(buffer[(blobOffset.HasValue ? blobOffset.Value : 0) + j], resultBuffer[bufferOffset + j]);
}
for (int k = bufferOffset + downloadLength; k < bufferSize; k++)
{
Assert.AreEqual(0, resultBuffer[k]);
}
}