public void BytesToWriteSuccessive()
{
using (SerialPort com = new SerialPort(TCSupport.LocalMachineSerialInfo.FirstAvailablePortName))
{
AsyncWriteRndCharArray asyncWriteRndCharArray = new AsyncWriteRndCharArray(com, CHAR_SIZE_BYTES_TO_WRITE);
var t1 = new Task(asyncWriteRndCharArray.WriteRndCharArray);
var t2 = new Task(asyncWriteRndCharArray.WriteRndCharArray);
Debug.WriteLine("Verifying BytesToWrite with successive calls to Write");
com.Handshake = Handshake.RequestToSend;
com.Open();
com.WriteTimeout = 4000;
//Write a random char[] asynchronously so we can verify some things while the write call is blocking
t1.Start();
TCSupport.WaitForTaskToStart(t1);
TCSupport.WaitForExactWriteBufferLoad(com, CHAR_SIZE_BYTES_TO_WRITE);
//Write a random char[] asynchronously so we can verify some things while the write call is blocking
t2.Start();
TCSupport.WaitForTaskToStart(t2);
TCSupport.WaitForExactWriteBufferLoad(com, CHAR_SIZE_BYTES_TO_WRITE * 2);
//Wait for both write methods to timeout
TCSupport.WaitForTaskCompletion(t1);
var aggregatedException = Assert.Throws <AggregateException>(() => TCSupport.WaitForTaskCompletion(t2));
Assert.IsType <IOException>(aggregatedException.InnerException);
}
}
public void BytesToWrite()
{
using (SerialPort com = new SerialPort(TCSupport.LocalMachineSerialInfo.FirstAvailablePortName))
{
AsyncWriteRndByteArray asyncWriteRndByteArray = new AsyncWriteRndByteArray(com, BYTE_SIZE_BYTES_TO_WRITE);
Thread t = new Thread(asyncWriteRndByteArray.WriteRndByteArray);
int waitTime;
Debug.WriteLine("Verifying BytesToWrite with one call to Write");
com.Handshake = Handshake.RequestToSend;
com.Open();
com.WriteTimeout = 500;
//Write a random byte[] asynchronously so we can verify some things while the write call is blocking
t.Start();
waitTime = 0;
while (t.ThreadState == ThreadState.Unstarted && waitTime < 2000)
{ //Wait for the thread to start
Thread.Sleep(50);
waitTime += 50;
}
TCSupport.WaitForExactWriteBufferLoad(com, BYTE_SIZE_BYTES_TO_WRITE);
//Wait for write method to timeout
while (t.IsAlive)
{
Thread.Sleep(100);
}
}
}
public void BytesToWrite()
{
using (SerialPort com = new SerialPort(TCSupport.LocalMachineSerialInfo.FirstAvailablePortName))
{
AsyncWriteRndCharArray asyncWriteRndCharArray = new AsyncWriteRndCharArray(com, CHAR_SIZE_BYTES_TO_WRITE);
var t = new Task(asyncWriteRndCharArray.WriteRndCharArray);
Debug.WriteLine("Verifying BytesToWrite with one call to Write");
com.Handshake = Handshake.RequestToSend;
com.Open();
com.WriteTimeout = 500;
//Write a random char[] asynchronously so we can verify some things while the write call is blocking
t.Start();
TCSupport.WaitForTaskToStart(t);
TCSupport.WaitForExactWriteBufferLoad(com, CHAR_SIZE_BYTES_TO_WRITE);
TCSupport.WaitForTaskCompletion(t);
}
}
private void Verify_Handshake(Handshake handshake)
{
using (SerialPort com1 = new SerialPort(TCSupport.LocalMachineSerialInfo.FirstAvailablePortName))
using (SerialPort com2 = new SerialPort(TCSupport.LocalMachineSerialInfo.SecondAvailablePortName))
{
AsyncWriteRndByteArray asyncWriteRndByteArray = new AsyncWriteRndByteArray(com1, BYTE_SIZE_HANDSHAKE);
Thread t = new Thread(asyncWriteRndByteArray.WriteRndByteArray);
byte[] XOffBuffer = new byte[1];
byte[] XOnBuffer = new byte[1];
int waitTime;
XOffBuffer[0] = 19;
XOnBuffer[0] = 17;
Debug.WriteLine("Verifying Handshake={0}", handshake);
com1.Handshake = handshake;
com1.Open();
com2.Open();
//Setup to ensure write will bock with type of handshake method being used
if (Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.RtsEnable = false;
}
if (Handshake.XOnXOff == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.Write(XOffBuffer, 0, 1);
Thread.Sleep(250);
}
//Write a random byte asynchronously so we can verify some things while the write call is blocking
t.Start();
waitTime = 0;
while (t.ThreadState == ThreadState.Unstarted && waitTime < 2000)
{
//Wait for the thread to start
Thread.Sleep(50);
waitTime += 50;
}
waitTime = 0;
TCSupport.WaitForExactWriteBufferLoad(com1, BYTE_SIZE_HANDSHAKE);
//Verify that CtsHolding is false if the RequestToSend or RequestToSendXOnXOff handshake method is used
if ((Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake) && com1.CtsHolding)
{
Fail("ERROR!!! Expcted CtsHolding={0} actual {1}", false, com1.CtsHolding);
}
//Setup to ensure write will succeed
if (Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.RtsEnable = true;
}
if (Handshake.XOnXOff == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.Write(XOnBuffer, 0, 1);
}
//Wait till write finishes
while (t.IsAlive)
{
Thread.Sleep(100);
}
Assert.Equal(0, com1.BytesToWrite);
//Verify that CtsHolding is true if the RequestToSend or RequestToSendXOnXOff handshake method is used
if ((Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake) &&
!com1.CtsHolding)
{
Fail("ERROR!!! Expcted CtsHolding={0} actual {1}", true, com1.CtsHolding);
}
}
}
private void Verify_Handshake(Handshake handshake)
{
using (SerialPort com1 = new SerialPort(TCSupport.LocalMachineSerialInfo.FirstAvailablePortName))
using (SerialPort com2 = new SerialPort(TCSupport.LocalMachineSerialInfo.SecondAvailablePortName))
{
AsyncWriteRndCharArray asyncWriteRndCharArray = new AsyncWriteRndCharArray(com1, CHAR_SIZE_HANDSHAKE);
var t = new Task(asyncWriteRndCharArray.WriteRndCharArray);
byte[] XOffBuffer = new byte[1];
byte[] XOnBuffer = new byte[1];
XOffBuffer[0] = 19;
XOnBuffer[0] = 17;
Debug.WriteLine("Verifying Handshake={0}", handshake);
com1.Handshake = handshake;
com1.Open();
com2.Open();
//Setup to ensure write will bock with type of handshake method being used
if (Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.RtsEnable = false;
}
if (Handshake.XOnXOff == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.Write(XOffBuffer, 0, 1);
Thread.Sleep(250);
}
//Write a random char array asynchronously so we can verify some things while the write call is blocking
t.Start();
TCSupport.WaitForTaskToStart(t);
TCSupport.WaitForExactWriteBufferLoad(com1, CHAR_SIZE_HANDSHAKE);
//Verify that CtsHolding is false if the RequestToSend or RequestToSendXOnXOff handshake method is used
if ((Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake) && com1.CtsHolding)
{
Fail("ERROR!!! Expcted CtsHolding={0} actual {1}", false, com1.CtsHolding);
}
//Setup to ensure write will succeed
if (Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.RtsEnable = true;
}
if (Handshake.XOnXOff == handshake || Handshake.RequestToSendXOnXOff == handshake)
{
com2.Write(XOnBuffer, 0, 1);
}
TCSupport.WaitForTaskCompletion(t);
//Verify that the correct number of bytes are in the buffer
Assert.Equal(0, com1.BytesToWrite);
//Verify that CtsHolding is true if the RequestToSend or RequestToSendXOnXOff handshake method is used
if ((Handshake.RequestToSend == handshake || Handshake.RequestToSendXOnXOff == handshake) &&
!com1.CtsHolding)
{
Fail("ERROR!!! Expcted CtsHolding={0} actual {1}", true, com1.CtsHolding);
}
}
}
