public async Task TestConcurrent()
{
var output = new byte[10];
Task <int> readTask;
using (var s = new UnbufferedMemoryStream.UnbufferedMemoryStream())
{
readTask = s.ReadAsync(output, 0, 10);
s.WriteByte(10);
}
var read = await readTask;
Assert.AreEqual(1, read);
Assert.AreEqual(10, output[0]);
}
