public void Read_DataReceivedBeforeTimeout()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
byte[] byteXmitBuffer = TCSupport.GetRandomBytes(512);
byte[] byteRcvBuffer = new byte[byteXmitBuffer.Length];
ASyncRead asyncRead = new ASyncRead(com1, byteRcvBuffer, 0, byteRcvBuffer.Length);
var asyncReadTask = new Task(asyncRead.Read);
Debug.WriteLine(
"Verifying that Read(byte[], int, int) will read characters that have been received after the call to Read was made");
com1.Encoding = Encoding.UTF8;
com2.Encoding = Encoding.UTF8;
com1.ReadTimeout = 20000; // 20 seconds
com1.Open();
if (!com2.IsOpen) //This is necessary since com1 and com2 might be the same port if we are using a loopback
{
com2.Open();
}
asyncReadTask.Start();
asyncRead.ReadStartedEvent.WaitOne();
//This only tells us that the thread has started to execute code in the method
Thread.Sleep(2000); //We need to wait to guarentee that we are executing code in SerialPort
com2.Write(byteXmitBuffer, 0, byteXmitBuffer.Length);
asyncRead.ReadCompletedEvent.WaitOne();
if (null != asyncRead.Exception)
{
Fail("Err_04448ajhied Unexpected exception thrown from async read:\n{0}", asyncRead.Exception);
}
else if (asyncRead.Result < 1)
{
Fail("Err_0158ahei Expected Read to read at least one character {0}", asyncRead.Result);
}
else
{
Thread.Sleep(1000); //We need to wait for all of the bytes to be received
int readResult = com1.Read(byteRcvBuffer, asyncRead.Result, byteRcvBuffer.Length - asyncRead.Result);
if (asyncRead.Result + readResult != byteXmitBuffer.Length)
{
Fail("Err_051884ajoedo Expected Read to read {0} characters actually read {1}",
byteXmitBuffer.Length - asyncRead.Result, readResult);
}
else
{
for (int i = 0; i < byteXmitBuffer.Length; ++i)
{
if (byteRcvBuffer[i] != byteXmitBuffer[i])
{
Fail(
"Err_05188ahed Characters differ at {0} expected:{1}({1:X}) actual:{2}({2:X}) asyncRead.Result={3}",
i, byteXmitBuffer[i], byteRcvBuffer[i], asyncRead.Result);
}
}
}
}
TCSupport.WaitForTaskCompletion(asyncReadTask);
}
}
public bool Read_DataReceivedBeforeTimeout()
{
SerialPort com1 = TCSupport.InitFirstSerialPort();
SerialPort com2 = TCSupport.InitSecondSerialPort(com1);
byte[] byteXmitBuffer = TCSupport.GetRandomBytes(512);
byte[] byteRcvBuffer = new byte[byteXmitBuffer.Length];
ASyncRead asyncRead = new ASyncRead(com1);
System.Threading.Thread asyncReadThread = new System.Threading.Thread(new System.Threading.ThreadStart(asyncRead.Read));
bool retValue = true;
Console.WriteLine("Verifying that ReadByte() will read bytes that have been received after the call to Read was made");
com1.Encoding = System.Text.Encoding.UTF8;
com2.Encoding = System.Text.Encoding.UTF8;
com1.ReadTimeout = 20000; // 20 seconds
com1.Open();
if (!com2.IsOpen) //This is necessary since com1 and com2 might be the same port if we are using a loopback
{
com2.Open();
}
asyncReadThread.Start();
asyncRead.ReadStartedEvent.WaitOne(); //This only tells us that the thread has started to execute code in the method
System.Threading.Thread.Sleep(2000); //We need to wait to guarentee that we are executing code in SerialPort
com2.Write(byteXmitBuffer, 0, byteXmitBuffer.Length);
asyncRead.ReadCompletedEvent.WaitOne();
if (null != asyncRead.Exception)
{
retValue = false;
Console.WriteLine("Err_04448ajhied Unexpected exception thrown from async read:\n{0}", asyncRead.Exception);
}
else if (asyncRead.Result != byteXmitBuffer[0])
{
retValue = false;
Console.WriteLine("Err_0158ahei Expected ReadChar to read {0}({0:X}) actual {1}({1:X})", byteXmitBuffer[0], asyncRead.Result);
}
else
{
System.Threading.Thread.Sleep(1000); //We need to wait for all of the bytes to be received
byteRcvBuffer[0] = (byte)asyncRead.Result;
int readResult = com1.Read(byteRcvBuffer, 1, byteRcvBuffer.Length - 1);
if (1 + readResult != byteXmitBuffer.Length)
{
retValue = false;
Console.WriteLine("Err_051884ajoedo Expected Read to read {0} bytes actually read {1}",
byteXmitBuffer.Length - 1, readResult);
}
else
{
for (int i = 0; i < byteXmitBuffer.Length; ++i)
{
if (byteRcvBuffer[i] != byteXmitBuffer[i])
{
retValue = false;
Console.WriteLine("Err_05188ahed Characters differ at {0} expected:{1}({1:X}) actual:{2}({2:X}) asyncRead.Result={3}",
i, byteXmitBuffer[i], byteRcvBuffer[i], asyncRead.Result);
}
}
}
}
if (!retValue)
{
Console.WriteLine("Err_018068ajkid Verifying that ReadByte() will read bytes that have been received after the call to Read was made failed");
}
com1.Close();
com2.Close();
return(retValue);
}
