public void GreedyRead()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
byte[] byteXmitBuffer = new byte[1024];
char utf32Char = TCSupport.GenerateRandomCharNonSurrogate();
byte[] utf32CharBytes = System.Text.Encoding.UTF32.GetBytes(new[] { utf32Char });
int charRead;
Debug.WriteLine("Verifying that ReadChar() will read everything from internal buffer and drivers buffer");
//Put the first byte of the utf32 encoder char in the last byte of this buffer
//when we read this later the buffer will have to be resized
byteXmitBuffer[byteXmitBuffer.Length - 1] = utf32CharBytes[0];
TCSupport.SetHighSpeed(com1, com2);
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(byteXmitBuffer, 0, byteXmitBuffer.Length);
while (com1.BytesToRead < byteXmitBuffer.Length)
{
System.Threading.Thread.Sleep(50);
}
//Read Every Byte except the last one. The last bye should be left in the last position of SerialPort's
//internal buffer. When we try to read this char as UTF32 the buffer should have to be resized so
//the other 3 bytes of the ut32 encoded char can be in the buffer
com1.Read(new char[1023], 0, 1023);
Assert.Equal(1, com1.BytesToRead);
com1.Encoding = System.Text.Encoding.UTF32;
com2.Write(utf32CharBytes, 1, 3);
while (com1.BytesToRead < 4)
{
System.Threading.Thread.Sleep(50);
}
if (utf32Char != (charRead = com1.ReadChar()))
{
Fail("Err_6481sfadw ReadChar() returned={0} expected={1}", charRead, utf32Char);
}
Assert.Equal(0, com1.BytesToRead);
}
}
private void VerifyRead(Encoding encoding, int numberOfBytesToRead, ReadDataFromEnum readDataFrom)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
Random rndGen = new Random(-55);
char[] charsToWrite = new char[numberOfBytesToRead];
byte[] bytesToWrite = new byte[numberOfBytesToRead];
//Genrate random chars to send
for (int i = 0; i < bytesToWrite.Length; i++)
{
char randChar = (char)rndGen.Next(0, ushort.MaxValue);
charsToWrite[i] = randChar;
}
Debug.WriteLine("Verifying read method endocing={0} with {1} random chars", encoding.EncodingName,
bytesToWrite.Length);
com1.ReadTimeout = 500;
com1.Encoding = encoding;
TCSupport.SetHighSpeed(com1, com2);
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();
}
bytesToWrite = com1.Encoding.GetBytes(charsToWrite, 0, charsToWrite.Length);
switch (readDataFrom)
{
case ReadDataFromEnum.NonBuffered:
VerifyReadNonBuffered(com1, com2, bytesToWrite);
break;
case ReadDataFromEnum.Buffered:
VerifyReadBuffered(com1, com2, bytesToWrite);
break;
case ReadDataFromEnum.BufferedAndNonBuffered:
VerifyReadBufferedAndNonBuffered(com1, com2, bytesToWrite);
break;
default:
throw new ArgumentOutOfRangeException(nameof(readDataFrom), readDataFrom, null);
}
}
}
private void VerifyRead(Encoding encoding, ReadDataFromEnum readDataFrom)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
Random rndGen = new Random(-55);
int bufferSize = numRndByte;
byte[] byteXmitBuffer = new byte[bufferSize];
//Genrate random bytes
for (int i = 0; i < byteXmitBuffer.Length; i++)
{
byteXmitBuffer[i] = (byte)rndGen.Next(0, 256);
}
com1.ReadTimeout = 500;
com1.Encoding = encoding;
TCSupport.SetHighSpeed(com1, com2);
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();
}
switch (readDataFrom)
{
case ReadDataFromEnum.NonBuffered:
VerifyReadNonBuffered(com1, com2, byteXmitBuffer);
break;
case ReadDataFromEnum.Buffered:
VerifyReadBuffered(com1, com2, byteXmitBuffer);
break;
case ReadDataFromEnum.BufferedAndNonBuffered:
VerifyReadBufferedAndNonBuffered(com1, com2, byteXmitBuffer);
break;
default:
throw new ArgumentOutOfRangeException(nameof(readDataFrom));
}
}
}
private void VerifyWrite(System.Text.Encoding encoding, int strSize, string newLine, int numWrites)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
string stringToWrite = TCSupport.GetRandomString(NEWLINE_TESTING_STRING_SIZE, TCSupport.CharacterOptions.None);
TCSupport.SetHighSpeed(com1, com2);
com1.Encoding = encoding;
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();
}
VerifyWriteLine(com1, com2, stringToWrite, numWrites);
}
}
private void VerifyRead(Encoding encoding, ReadDataFromEnum readDataFrom, int bufferSize)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(bufferSize, false);
byte[] byteXmitBuffer = encoding.GetBytes(charXmitBuffer);
com1.ReadTimeout = 500;
com1.Encoding = encoding;
TCSupport.SetHighSpeed(com1, com2);
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();
}
switch (readDataFrom)
{
case ReadDataFromEnum.NonBuffered:
VerifyReadNonBuffered(com1, com2, byteXmitBuffer);
break;
case ReadDataFromEnum.Buffered:
VerifyReadBuffered(com1, com2, byteXmitBuffer);
break;
case ReadDataFromEnum.BufferedAndNonBuffered:
VerifyReadBufferedAndNonBuffered(com1, com2, byteXmitBuffer);
break;
default:
throw new ArgumentOutOfRangeException(nameof(readDataFrom), readDataFrom, null);
}
}
}
private void VerifyReadExisting(Encoding encoding)
{
// TODO - this test text did not come across from legacy properly.
string text = "????????????4??????????????????,?11????????????????????????????????????????????????,????????????,??????????";
string receivedstr = "";
SerialPort com1;
SerialPort com2;
using (com1 = TCSupport.InitFirstSerialPort())
using (com2 = TCSupport.InitSecondSerialPort(com1))
{
com1.ReadTimeout = 500;
com1.Encoding = encoding;
com2.Encoding = encoding;
TCSupport.SetHighSpeed(com1, com2);
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.DataReceived += (sender, args) =>
{
receivedstr += com2.ReadExisting();
};
com1.Write(text);
//3 seconds is more than enough time to write a few bytes to the other port
TCSupport.WaitForPredicate(() => receivedstr.Length >= text.Length, 3000,
"Data was not returned in a timely fashion. Timeout");
Assert.Equal(text, receivedstr);
}
}
private void VerifyReadExisting(Encoding encoding)
{
string text = "Za\u017C\u00F3\u0142\u0107 g\u0119\u015Bl\u0105 ja\u017A\u0144";
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
com1.ReadTimeout = 500;
com1.Encoding = encoding;
com2.Encoding = encoding;
TCSupport.SetHighSpeed(com1, com2);
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();
}
string receivedstr = "";
com2.DataReceived += (sender, args) =>
{
receivedstr += com2.ReadExisting();
};
com1.Write(text);
//3 seconds is more than enough time to write a few bytes to the other port
TCSupport.WaitForPredicate(() => receivedstr.Length >= text.Length, 3000,
"Data was not returned in a timely fashion. Timeout");
Assert.Equal(text, receivedstr);
}
}
private void VerifyRead(Encoding encoding, string newLine, int numBytesRead, int numNewLines, ReadDataFromEnum readDataFrom)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
Random rndGen = new Random(-55);
StringBuilder strBldrToWrite;
int numNewLineChars = newLine.ToCharArray().Length;
int minLength = (1 + numNewLineChars) * numNewLines;
if (minLength < numBytesRead)
{
strBldrToWrite = TCSupport.GetRandomStringBuilder(numBytesRead, TCSupport.CharacterOptions.None);
}
else
{
strBldrToWrite = TCSupport.GetRandomStringBuilder(rndGen.Next(minLength, minLength * 2),
TCSupport.CharacterOptions.None);
}
//We need place the newLine so that they do not write over eachother
int divisionLength = strBldrToWrite.Length / numNewLines;
int range = divisionLength - numNewLineChars;
for (int i = 0; i < numNewLines; i++)
{
int newLineIndex = rndGen.Next(0, range + 1);
strBldrToWrite.Insert(newLineIndex + (i * divisionLength) + (i * numNewLineChars), newLine);
}
Debug.WriteLine("Verifying ReadTo encoding={0}, newLine={1}, numBytesRead={2}, numNewLines={3}", encoding,
newLine, numBytesRead, numNewLines);
com1.ReadTimeout = 500;
com1.Encoding = encoding;
TCSupport.SetHighSpeed(com1, com2);
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();
}
switch (readDataFrom)
{
case ReadDataFromEnum.NonBuffered:
VerifyReadNonBuffered(com1, com2, strBldrToWrite.ToString(), newLine);
break;
case ReadDataFromEnum.Buffered:
VerifyReadBuffered(com1, com2, strBldrToWrite.ToString(), newLine);
break;
case ReadDataFromEnum.BufferedAndNonBuffered:
VerifyReadBufferedAndNonBuffered(com1, com2, strBldrToWrite.ToString(), newLine);
break;
default:
throw new ArgumentOutOfRangeException(nameof(readDataFrom), readDataFrom, null);
}
}
}
private void VerifyRead(char[] buffer, int offset, int count, Encoding encoding, int numberOfBytesToRead,
ReadDataFromEnum readDataFrom)
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
Random rndGen = new Random(-55);
char[] charsToWrite;
char[] expectedChars = new char[numberOfBytesToRead];
byte[] bytesToWrite = new byte[numberOfBytesToRead];
if (1 < count)
{
charsToWrite = TCSupport.GetRandomChars(numberOfBytesToRead, TCSupport.CharacterOptions.Surrogates);
}
else
{
charsToWrite = TCSupport.GetRandomChars(numberOfBytesToRead, TCSupport.CharacterOptions.None);
}
//Genrate some random chars in the buffer
for (int i = 0; i < buffer.Length; i++)
{
char randChar = (char)rndGen.Next(0, ushort.MaxValue);
buffer[i] = randChar;
}
TCSupport.SetHighSpeed(com1, com2);
Debug.WriteLine(
"Verifying read method buffer.Length={0}, offset={1}, count={2}, endocing={3} with {4} random chars",
buffer.Length, offset, count, encoding.EncodingName, bytesToWrite.Length);
com1.ReadTimeout = 500;
com1.Encoding = encoding;
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();
}
bytesToWrite = com1.Encoding.GetBytes(charsToWrite, 0, charsToWrite.Length);
expectedChars = com1.Encoding.GetChars(bytesToWrite, 0, bytesToWrite.Length);
switch (readDataFrom)
{
case ReadDataFromEnum.NonBuffered:
VerifyReadNonBuffered(com1, com2, bytesToWrite, buffer, offset, count);
break;
case ReadDataFromEnum.Buffered:
VerifyReadBuffered(com1, com2, bytesToWrite, buffer, offset, count);
break;
case ReadDataFromEnum.BufferedAndNonBuffered:
VerifyReadBufferedAndNonBuffered(com1, com2, bytesToWrite, buffer, offset, count);
break;
default:
throw new ArgumentOutOfRangeException(nameof(readDataFrom), readDataFrom, null);
}
}
}
public void GreedyRead()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
Random rndGen = new Random(-55);
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.Surrogates);
byte[] byteXmitBuffer = new byte[1024];
char utf32Char = (char)8169;
byte[] utf32CharBytes = Encoding.UTF32.GetBytes(new[] { utf32Char });
int numCharsRead;
Debug.WriteLine(
"Verifying that Read(char[], int, int) will read everything from internal buffer and drivers buffer");
for (int i = 0; i < byteXmitBuffer.Length; i++)
{
byteXmitBuffer[i] = (byte)rndGen.Next(0, 256);
}
//Put the first byte of the utf32 encoder char in the last byte of this buffer
//when we read this later the buffer will have to be resized
byteXmitBuffer[byteXmitBuffer.Length - 1] = utf32CharBytes[0];
TCSupport.SetHighSpeed(com1, com2);
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(byteXmitBuffer, 0, byteXmitBuffer.Length);
TCSupport.WaitForReadBufferToLoad(com1, byteXmitBuffer.Length);
//Read Every Byte except the last one. The last bye should be left in the last position of SerialPort's
//internal buffer. When we try to read this char as UTF32 the buffer should have to be resized so
//the other 3 bytes of the ut32 encoded char can be in the buffer
com1.Read(new char[1023], 0, 1023);
Assert.Equal(1, com1.BytesToRead);
com1.Encoding = Encoding.UTF32;
com2.Encoding = Encoding.UTF32;
com2.Write(utf32CharBytes, 1, 3);
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
int numBytes = Encoding.UTF32.GetByteCount(charXmitBuffer);
byte[] byteBuffer = Encoding.UTF32.GetBytes(charXmitBuffer);
var expectedChars = new char[1 + Encoding.UTF32.GetCharCount(byteBuffer)];
expectedChars[0] = utf32Char;
Encoding.UTF32.GetChars(byteBuffer, 0, byteBuffer.Length, expectedChars, 1);
var charRcvBuffer = new char[(int)(expectedChars.Length * 1.5)];
TCSupport.WaitForReadBufferToLoad(com1, 4 + numBytes);
if (expectedChars.Length != (numCharsRead = com1.Read(charRcvBuffer, 0, charRcvBuffer.Length)))
{
Fail("Err_6481sfadw Expected read to read {0} chars actually read {1}", expectedChars.Length,
numCharsRead);
}
Assert.Equal(expectedChars, charRcvBuffer.Take(expectedChars.Length).ToArray());
Assert.Equal(0, com1.BytesToRead);
}
}
