private async void SerialPortCommunicationService_DataReceived(
object sender,
SerialPortDataReceivedEventArgs e)
{
var communicationService = ((ISerialPortCommunicationService)sender);
var webSocket = (WebSocket)communicationService.State;
await webSocket.SendAsync(
new ArraySegment <byte>(e.Data, 0, e.Data.Length),
WebSocketMessageType.Text,
true,
CancellationToken.None);
}
public void TestDataReceived(SerialPortDataReceivedEventArgs args)
{
DataReceived?.Invoke(
this,
args);
}
public async Task GivenHttpContext_AndSerialPortMonitorService_AndRequestCorrect_AndPortDisconnectedDuringCommsLoop_WhenInvoke_ThenRXData_ThenPortDisconnected_AndTaskCancelled()
{
//Arrange
var mockSerialPortConnectionManager = new Mock <ISerialPortConnectionManager>();
var mockSerialPortCommunicationService = new Mock <ISerialPortCommunicationService>();
var mockWebSocketConnectionService = new Mock <IWebSocketConnectionService>();
var mockWebSocketTerminalService = new Mock <IWebSocketTerminalService>();
var mockRequestDelegate = new Mock <RequestDelegate>();
var mockSerialPortMonitorService = new Mock <ISerialPortMonitorService>();
var mockHttpContext = new Mock <HttpContext>();
var mockWebSocket = new Mock <WebSocket>();
var mockWebSocketManager = new Mock <WebSocketManager>();
var mockHttpRequest = new Mock <HttpRequest>();
var mockSerialPort = new Mock <ISerialPort>();
var sut = new TerminalMiddleware(
mockRequestDelegate.Object,
mockSerialPortConnectionManager.Object,
mockWebSocketConnectionService.Object,
Mock.Of <ILogger <TerminalMiddleware> >());
mockWebSocket.Setup(x => x.SendAsync(
It.IsAny <ArraySegment <byte> >(),
It.IsAny <WebSocketMessageType>(),
It.IsAny <bool>(),
It.IsAny <CancellationToken>()))
.Returns(Task.FromResult(true));
mockWebSocketManager.Setup(x => x.AcceptWebSocketAsync())
.Returns(Task.FromResult(mockWebSocket.Object));
mockWebSocketManager.SetupGet(x => x.IsWebSocketRequest)
.Returns(true);
mockHttpContext.SetupGet(x => x.WebSockets)
.Returns(mockWebSocketManager.Object);
mockHttpContext.SetupGet(x => x.Request)
.Returns(mockHttpRequest.Object);
mockHttpRequest.SetupGet(x => x.Path)
.Returns("/terminal?portName=COM1&baudRate=9600&parity=None&dataBits=8&stopBits=One&Handshake=None");
mockWebSocketConnectionService.Setup(x => x.Create(
It.IsAny <HttpContext>()))
.ReturnsAsync(mockWebSocketTerminalService.Object);
mockRequestDelegate.Setup(x => x.Invoke(
It.IsAny <HttpContext>()));
mockSerialPortCommunicationService.SetupGet(x => x.PortName)
.Returns("COM1");
mockSerialPortConnectionManager.Setup(x => x.GetOrOpen(
It.IsAny <HttpRequest>()))
.Returns(mockSerialPortCommunicationService.Object);
mockWebSocketTerminalService.Setup(x => x.RunCommsLoopAsync(
It.IsAny <ISerialPortCommunicationService>(),
It.IsAny <CancellationToken>()))
.Returns((ISerialPortCommunicationService commsService, CancellationToken ct) =>
{
return(Task.Delay(50000, ct));
});
mockSerialPortCommunicationService.SetupGet(x => x.State)
.Returns(mockWebSocket.Object);
mockSerialPortCommunicationService.SetupGet(x => x.SerialPort)
.Returns(mockSerialPort.Object);
mockSerialPort.SetupGet(x => x.Encoding)
.Returns(Encoding.ASCII);
var dataString = "Hello World!";
var dataBytes = Encoding.ASCII.GetBytes(dataString);
var dataBuffer = new ArraySegment <byte>(dataBytes, 0, dataBytes.Length);
var eventArgs = new SerialPortDataReceivedEventArgs
{
SerialPort = mockSerialPort.Object,
Data = dataBuffer.Array
};
// Act
var invokeTask = sut.Invoke(
mockHttpContext.Object,
mockSerialPortMonitorService.Object);
await Task.Delay(500).ConfigureAwait(false);
mockSerialPortCommunicationService.Raise(x => x.DataReceived += null, new object[] { mockSerialPortCommunicationService.Object, eventArgs });
await Task.Delay(500).ConfigureAwait(false);
mockWebSocket.Verify(x => x.SendAsync(
It.Is <ArraySegment <byte> >(y => Convert.ToBase64String(y.Array) == Convert.ToBase64String(dataBuffer.Array)),
It.Is <WebSocketMessageType>(y => y == WebSocketMessageType.Text),
It.Is <bool>(y => y == true),
It.Is <CancellationToken>(y => y == CancellationToken.None)), Times.Once);
mockSerialPortMonitorService.Raise(x => x.PortsDisconnected += null, new PortsDisconnectedEventArgs()
{
SerialPorts = new string[] { "COM1" }
});
await Task.Delay(500).ConfigureAwait(false);
Assert.True(invokeTask.IsCanceled);
}
