public async void TestWriteAsync() { var bytes = new byte[9 * 1024]; int position = 0; random.NextBytes(bytes); blocks.Position = 0; master.Position = 0; while (position < bytes.Length) { int n = Math.Min(bytes.Length - position, random.Next() % 4096); await blocks.WriteAsync(bytes, position, n); await master.WriteAsync(bytes, position, n); position += n; } await blocks.FlushAsync(); await master.FlushAsync(); }