public void OnlineImage() { for (int i = 1; i < 4; i++) { byte[] array = File.ReadAllBytes($"{i}.png"); var packet = new ImagePacketPb { ImageData = ByteString.CopyFrom(array, 0, array.Length), }; var response = ImageClient.Handle(packet); Assert.True(response.ErrType == ErrorStatusPb.Types.ErrorStatusEnum.Succeeded, response.Message); Thread.Sleep(1000); } }