private void VerifyBytesFollowedByChars(System.Text.Encoding encoding)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] xmitCharBuffer = TCSupport.GetRandomChars(numRndBytesToRead, TCSupport.CharacterOptions.Surrogates);
char[] rcvCharBuffer = new char[xmitCharBuffer.Length];
byte[] xmitByteBuffer = new byte[numRndBytesToRead];
byte[] rcvByteBuffer = new byte[xmitByteBuffer.Length];
Random rndGen = new Random(-55);
int numRead;
Debug.WriteLine("Verifying read method does not alter stream of bytes after chars have been read with {0}",
encoding.GetType());
for (int i = 0; i < xmitByteBuffer.Length; i++)
{
xmitByteBuffer[i] = (byte)rndGen.Next(0, 256);
}
com1.Encoding = encoding;
com2.Encoding = encoding;
com1.ReadTimeout = 500;
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();
}
com2.Write(xmitCharBuffer, 0, xmitCharBuffer.Length);
com2.Write(xmitByteBuffer, 0, xmitByteBuffer.Length);
System.Threading.Thread.Sleep(
(int)
(((xmitByteBuffer.Length + com2.Encoding.GetByteCount(xmitCharBuffer) * 10.0) / com1.BaudRate) * 1000) +
500);
System.Threading.Thread.Sleep(500);
if (xmitCharBuffer.Length != (numRead = com1.Read(rcvCharBuffer, 0, rcvCharBuffer.Length)))
{
Fail("ERROR!!!: Expected to read {0} chars actually read {1}", xmitCharBuffer.Length, numRead);
}
if (encoding.EncodingName == System.Text.Encoding.UTF7.EncodingName)
{
//If UTF7Encoding is being used we we might leave a - in the stream
if (com1.BytesToRead == xmitByteBuffer.Length + 1)
{
int byteRead;
if ('-' != (char)(byteRead = com1.ReadByte()))
{
Fail("Err_29282naie Expected '-' to be left in the stream with UTF7Encoding and read {0}", byteRead);
}
}
}
if (xmitByteBuffer.Length != (numRead = com1.Read(rcvByteBuffer, 0, rcvByteBuffer.Length)))
{
Fail("ERROR!!!: Expected to read {0} bytes actually read {1}", xmitByteBuffer.Length, numRead);
}
for (int i = 0; i < xmitByteBuffer.Length; i++)
{
if (xmitByteBuffer[i] != rcvByteBuffer[i])
{
Fail("ERROR!!!: Expected to read {0} actual read {1} at {2}", (int)xmitByteBuffer[i], (int)rcvByteBuffer[i], i);
}
}
Assert.Equal(0, com1.BytesToRead);
/*DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG DEBUG
* if(!retValue) {
* for(int i=0; i<xmitCharBuffer.Length; ++i) {
* Debug.WriteLine("(char){0}, ", (int)xmitCharBuffer[i]);
* }
*
* for(int i=0; i<xmitCharBuffer.Length; ++i) {
* Debug.WriteLine("{0}, ", (int)xmitByteBuffer[i]);
* }
* }*/
}
}