public void TestConstructor()
{
// Arrange
MemoryStream memStream = new MemoryStream();
// Act
AsyncRequestChunkBuffer buffer = new AsyncRequestChunkBuffer(
memStream, 1024, 512, 4);
// Assert
Assert.That(buffer.ChunkSize, Is.EqualTo(1024));
Assert.That(buffer.MaxChunkCount, Is.EqualTo(512));
Assert.That(buffer.ReadAheadChunkCount, Is.EqualTo(4));
}
public void TestStartFillingBuffer()
{
const int timeoutMs = 8000;
const int numBuffers = 16;
const int buffSize = 65536;
// Arrange
using(var inputStream = new FileStream(
Path.Combine(UnitTestSettings.Default.TestDataPath, "Canyon.jpg"),
FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true))
using(AsyncRequestChunkBuffer buffer = new AsyncRequestChunkBuffer(
inputStream, buffSize, numBuffers, 4))
{
Assert.That(inputStream.Length, Is.GreaterThanOrEqualTo(buffSize * numBuffers),
string.Format("Sample file must be greather than {0} bytes.",
buffSize*numBuffers));
// Act
buffer.StartFillingBuffer();
// Assert
// Wait until the buffer is full
var t = DateTime.UtcNow;
while (buffer.ReadyChunkCount < numBuffers * buffSize)
{
Assert.That(Math.Abs((DateTime.UtcNow - t).TotalMilliseconds),
Is.LessThan(timeoutMs),
string.Format("Buffers not filled in {0} ms.", timeoutMs));
Thread.Sleep(10);
}
var timespan = DateTime.UtcNow - t;
Console.WriteLine("Read {0} bytes in {1} ms.",
buffSize * numBuffers, timespan.TotalMilliseconds);
}
}
public ChunkInfo(AsyncRequestChunkBuffer parent, int index, int next)
{
Index = index;
Prev = -1;
Next = next;
}
