public void GreedyRead()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(128, TCSupport.CharacterOptions.Surrogates);
byte[] byteXmitBuffer = new byte[1024];
char utf32Char = TCSupport.GenerateRandomCharNonSurrogate();
byte[] utf32CharBytes = Encoding.UTF32.GetBytes(new [] { utf32Char });
int numBytes;
Debug.WriteLine("Verifying that ReadTo() 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];
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 = Encoding.UTF32;
com2.Encoding = Encoding.UTF32;
com2.Write(utf32CharBytes, 1, 3);
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
com2.WriteLine(string.Empty);
numBytes = Encoding.UTF32.GetByteCount(charXmitBuffer);
byte[] byteBuffer = Encoding.UTF32.GetBytes(charXmitBuffer);
char[] expectedChars = new char[1 + Encoding.UTF32.GetCharCount(byteBuffer)];
expectedChars[0] = utf32Char;
Encoding.UTF32.GetChars(byteBuffer, 0, byteBuffer.Length, expectedChars, 1);
while (com1.BytesToRead < 4 + numBytes)
{
System.Threading.Thread.Sleep(50);
}
string rcvString = com1.ReadTo(com2.NewLine);
Assert.NotNull(rcvString);
Assert.Equal(expectedChars, rcvString.ToCharArray());
Assert.Equal(0, com1.BytesToRead);
}
}
public void GreedyRead()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
Random rndGen = new Random();
byte[] byteXmitBuffer = new byte[1024];
byte[] expectedBytes = new byte[byteXmitBuffer.Length + 4];
byte[] byteRcvBuffer;
char utf32Char = (char)8169;
byte[] utf32CharBytes = Encoding.UTF32.GetBytes(new[] { utf32Char });
int numBytesRead;
Debug.WriteLine(
"Verifying that Read(byte[], int, int) will read everything from internal buffer and drivers buffer");
for (int i = 0; i < utf32CharBytes.Length; i++)
{
expectedBytes[i] = utf32CharBytes[i];
}
for (int i = 0; i < byteXmitBuffer.Length; i++)
{
byteXmitBuffer[i] = (byte)rndGen.Next(0, 256);
expectedBytes[i + 4] = byteXmitBuffer[i];
}
//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];
expectedBytes[byteXmitBuffer.Length + 4 - 1] = utf32CharBytes[0];
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);
if (1 != com1.BytesToRead)
{
Fail("Err_9416sapz ExpectedByteToRead={0} actual={1}", 1, com1.BytesToRead);
}
com2.Write(utf32CharBytes, 1, 3);
com2.Write(byteXmitBuffer, 0, byteXmitBuffer.Length);
byteRcvBuffer = new byte[(int)(expectedBytes.Length * 1.5)];
TCSupport.WaitForReadBufferToLoad(com1, 4 + byteXmitBuffer.Length);
if (expectedBytes.Length != (numBytesRead = com1.Read(byteRcvBuffer, 0, byteRcvBuffer.Length)))
{
Fail("Err_6481sfadw Expected read to read {0} chars actually read {1}", expectedBytes.Length, numBytesRead);
}
for (int i = 0; i < expectedBytes.Length; i++)
{
if (expectedBytes[i] != byteRcvBuffer[i])
{
Fail("Err_70782apzh Expected to read {0} actually read {1} at {2}", (int)expectedBytes[i], (int)byteRcvBuffer[i], i);
}
}
if (0 != com1.BytesToRead)
{
Fail("Err_78028asdf ExpectedByteToRead={0} actual={1}", 0, com1.BytesToRead);
}
}
}
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);
}
}
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);
}
}
}
private void VerifyBytesFollowedByChars(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);
Thread.Sleep(
(int)
(((xmitByteBuffer.Length + com2.Encoding.GetByteCount(xmitCharBuffer) * 10.0) / com1.BaudRate) * 1000) +
500);
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 == 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]);
* }
* }*/
}
}
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);
}
}
}
public bool Read_DataReceivedBeforeTimeout()
{
SerialPort com1 = TCSupport.InitFirstSerialPort();
SerialPort com2 = TCSupport.InitSecondSerialPort(com1);
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
char[] charRcvBuffer;
ASyncRead asyncRead = new ASyncRead(com1);
System.Threading.Thread asyncReadThread = new System.Threading.Thread(new System.Threading.ThreadStart(asyncRead.Read));
bool retValue = true;
char endLineChar = com1.NewLine[0];
char notEndLineChar = TCSupport.GetRandomOtherChar(endLineChar, TCSupport.CharacterOptions.None);
Console.WriteLine("Verifying that Read(char[], int, int) will read characters that have been received after the call to Read was made");
//Ensure the new line is not in charXmitBuffer
for (int i = 0; i < charXmitBuffer.Length; ++i)
{//Se any appearances of a character in the new line string to some other char
if (endLineChar == charXmitBuffer[i])
{
charXmitBuffer[i] = notEndLineChar;
}
}
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(charXmitBuffer, 0, charXmitBuffer.Length);
com2.WriteLine(String.Empty);
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 (null == asyncRead.Result || 0 == asyncRead.Result.Length)
{
retValue = false;
Console.WriteLine("Err_0158ahei Expected Read to read at least one character");
}
else
{
charRcvBuffer = asyncRead.Result.ToCharArray();
if (charRcvBuffer.Length != charXmitBuffer.Length)
{
retValue = false;
Console.WriteLine("Err_051884ajoedo Expected Read to read {0} cahracters actually read {1}",
charXmitBuffer.Length, charRcvBuffer.Length);
}
else
{
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
if (charRcvBuffer[i] != charXmitBuffer[i])
{
retValue = false;
Console.WriteLine("Err_018956ahiaz Characters differ at {0} expected:{1}({2:X}) actual:{3}({4:X})",
i, charXmitBuffer[i], (int)charXmitBuffer[i], charRcvBuffer[i], (int)charRcvBuffer[i]);
}
}
}
}
if (!VerifyReadLine(com1, com2, new string(charXmitBuffer)))
{
Console.WriteLine("Err_05188ajied Verify ReadLine after read failed");
retValue = false;
}
if (!retValue)
{
Console.WriteLine("Err_018068ajkid Verifying that Read(char[], int, int) will read characters that have been received after the call to Read was made failed");
}
com1.Close();
com2.Close();
return(retValue);
}
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);
}
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);
}
}
public bool GreedyRead()
{
SerialPort com1 = TCSupport.InitFirstSerialPort();
SerialPort com2 = TCSupport.InitSecondSerialPort(com1);
Random rndGen = new Random(-55);
char[] charXmitBuffer = TCSupport.GetRandomChars(128, true);
byte[] byteXmitBuffer = new byte[1024];
char[] expectedChars;
string rcvString;
char[] actualChars;
char utf32Char = TCSupport.GenerateRandomCharNonSurrogate();
byte[] utf32CharBytes = System.Text.Encoding.UTF32.GetBytes(new char[] { utf32Char });
int numBytes;
bool retValue = true;
Console.WriteLine("Verifying that ReadExisting() 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];
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);
if (1 != com1.BytesToRead)
{
Console.WriteLine("Err_9416sapz ExpectedByteToRead={0} actual={1}", 1, com1.BytesToRead);
retValue = false;
}
com1.Encoding = System.Text.Encoding.UTF32;
com2.Encoding = System.Text.Encoding.UTF32;
com2.Write(utf32CharBytes, 1, 3);
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
numBytes = System.Text.Encoding.UTF32.GetByteCount(charXmitBuffer);
byte[] byteBuffer = System.Text.Encoding.UTF32.GetBytes(charXmitBuffer);
expectedChars = new char[1 + System.Text.Encoding.UTF32.GetCharCount(byteBuffer)];
expectedChars[0] = utf32Char;
System.Text.Encoding.UTF32.GetChars(byteBuffer, 0, byteBuffer.Length, expectedChars, 1);
while (com1.BytesToRead < 4 + numBytes)
{
System.Threading.Thread.Sleep(50);
}
if (null == (rcvString = com1.ReadExisting()))
{
Console.WriteLine("Err_6481sfadw ReadExisting returned null");
retValue = false;
}
else
{
actualChars = rcvString.ToCharArray();
if (actualChars.Length != expectedChars.Length)
{
Console.WriteLine("Err_0872watr Expected to read {0} chars actually read {1} chars", expectedChars.Length, actualChars.Length);
retValue = false;
}
else
{
for (int i = 0; i < expectedChars.Length; i++)
{
if (expectedChars[i] != actualChars[i])
{
Console.WriteLine("Err_70782apzh Expected to read {0} actually read {1}", (int)expectedChars[i], (int)actualChars[i]);
retValue = false;
break;
}
}
}
}
if (0 != com1.BytesToRead)
{
Console.WriteLine("Err_78028asdf ExpectedByteToRead={0} actual={1}", 0, com1.BytesToRead);
retValue = false;
}
if (!retValue)
{
Console.WriteLine("Err_1389 Verifying that ReadExisting() will read everything from internal buffer and drivers buffer failed");
}
com1.Close();
com2.Close();
return(retValue);
}
public void WriteChars()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] xmitCharBuffer = TCSupport.GetRandomChars(TRANSMIT_BUFFER_SIZE, TCSupport.CharacterOptions.None);
char[] rcvCharBuffer = new char[RECEIVE_BUFFER_SIZE];
Random random = new Random(-55);
Stopwatch sw = new Stopwatch();
Buffer <char> buffer = new Buffer <char>(MAX_BUFFER_SIZE);
com1.Encoding = Encoding.Unicode;
com2.Encoding = Encoding.Unicode;
com1.BaudRate = 115200;
com2.BaudRate = 115200;
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();
}
sw.Start();
while (sw.ElapsedMilliseconds < s_testDuration.TotalMilliseconds)
{
switch (random.Next(0, 2))
{
case 0: //Write
if (com2.BytesToRead < MAX_BUFFER_SIZE)
{
int maxNumberOfCharactes = (MAX_BUFFER_SIZE - com2.BytesToRead) / 2;
int numberOfCharacters = random.Next(0,
Math.Min(xmitCharBuffer.Length, maxNumberOfCharactes) + 1);
int expectedBytesToRead = com2.BytesToRead + 2 * numberOfCharacters;
// Debug.WriteLine("Writing {0,5} characters BytesToRead={1,5}", numberOfCharacters, com2.BytesToRead);
com1.Write(xmitCharBuffer, 0, numberOfCharacters);
buffer.Append(xmitCharBuffer, 0, numberOfCharacters);
TCSupport.WaitForPredicate(delegate() { return(com2.BytesToRead == expectedBytesToRead); },
60000,
"Err_29829haie Expected to received {0} bytes actual={1}", expectedBytesToRead,
com2.BytesToRead);
}
break;
case 1: //Read
if (0 < com2.BytesToRead)
{
int maxNumberOfCharactes = com2.BytesToRead / 2;
int numberOfCharacters = random.Next(0,
Math.Min(rcvCharBuffer.Length, maxNumberOfCharactes) + 1);
int actualNumberOfCharactersRead;
int expectedBytesToRead = com2.BytesToRead - (2 * numberOfCharacters);
// Debug.WriteLine("Reading {0,5} characters BytesToRead={1,5}", numberOfCharacters, com2.BytesToRead);
actualNumberOfCharactersRead = com2.Read(rcvCharBuffer, 0, numberOfCharacters);
if (actualNumberOfCharactersRead == numberOfCharacters)
{
buffer.CompareAndRemove(rcvCharBuffer, 0, numberOfCharacters);
if (com2.BytesToRead != expectedBytesToRead)
{
Fail("Err_895879uhedbuz Expected to BytesToRead={0} actual={1}",
expectedBytesToRead, com2.BytesToRead);
}
}
else
{
Fail("Err_895879uhedbuz Expected to read {0} chars actual {1}",
numberOfCharacters, actualNumberOfCharactersRead);
}
}
break;
}
}
}
}
public bool Read_Timeout()
{
SerialPort com1 = TCSupport.InitFirstSerialPort();
SerialPort com2 = TCSupport.InitSecondSerialPort(com1);
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
char[] charRcvBuffer;
string endString = "END";
bool retValue = true;
char endChar = endString[0];
char notEndChar = TCSupport.GetRandomOtherChar(endChar, TCSupport.CharacterOptions.None);
string result;
Console.WriteLine("Verifying that ReadTo(string) works appropriately after TimeoutException has been thrown");
//Ensure the new line is not in charXmitBuffer
for (int i = 0; i < charXmitBuffer.Length; ++i)
{//Se any appearances of a character in the new line string to some other char
if (endChar == charXmitBuffer[i])
{
charXmitBuffer[i] = notEndChar;
}
}
com1.Encoding = System.Text.Encoding.Unicode;
com2.Encoding = System.Text.Encoding.Unicode;
com1.ReadTimeout = 500; // 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();
}
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
try
{
com1.ReadTo(endString);
Console.WriteLine("Err_29299aize Expected ReadTo to throw TimeoutException");
retValue = false;
}
catch (TimeoutException) { }//Expected
if (2 * charXmitBuffer.Length != com1.BytesToRead)
{
Console.WriteLine("Err_0585haieidp Expected BytesToRead: {0} actual: {1}", 2 * charXmitBuffer.Length, com1.BytesToRead);
retValue = false;
}
com2.Write(endString);
result = com1.ReadTo(endString);
charRcvBuffer = result.ToCharArray();
if (charRcvBuffer.Length != charXmitBuffer.Length)
{
retValue = false;
Console.WriteLine("Err_051884ajoedo Expected Read to read {0} cahracters actually read {1}",
charXmitBuffer.Length, charRcvBuffer.Length);
}
else
{
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
if (charRcvBuffer[i] != charXmitBuffer[i])
{
retValue = false;
Console.WriteLine("Err_8988auzobn Characters differ at {0} expected:{1}({2:X}) actual:{3}({4:X})",
i, charXmitBuffer[i], (int)charXmitBuffer[i], charRcvBuffer[i], (int)charRcvBuffer[i]);
}
}
}
if (!VerifyReadTo(com1, com2, new string(charXmitBuffer), endString))
{
Console.WriteLine("Err_05188ajied Verify ReadTo after read failed");
retValue = false;
}
if (!retValue)
{
Console.WriteLine("Err_05498352aiiueid Verifying that ReadTo(string) works appropriately after TimeoutException has been thrown failed");
}
com1.Close();
com2.Close();
return(retValue);
}
private bool VerifyReadToWithWriteLine(System.Text.Encoding encoding, string newLine)
{
SerialPort com1 = TCSupport.InitFirstSerialPort();
SerialPort com2 = TCSupport.InitSecondSerialPort(com1);
Random rndGen = new Random(-55);
System.Text.StringBuilder strBldrToWrite = new System.Text.StringBuilder();
string strRead, strWrite;
string strExpected;
bool retValue = true;
bool isUTF7Encoding = encoding.EncodingName == System.Text.Encoding.UTF7.EncodingName;
Console.WriteLine("Verifying ReadTo with WriteLine encoding={0}, newLine={1}", encoding, newLine);
com1.ReadTimeout = 500;
com2.NewLine = newLine;
com1.Encoding = encoding;
com2.Encoding = encoding;
//Genrate random characters
do
{
strBldrToWrite = new System.Text.StringBuilder();
for (int i = 0; i < DEFAULT_NUM_CHARS_TO_READ; i++)
{
strBldrToWrite.Append((char)rndGen.Next(0, 128));
}
} while (-1 != TCSupport.OrdinalIndexOf(strBldrToWrite.ToString(), newLine));//SerialPort does a Ordinal comparison
strWrite = strBldrToWrite.ToString();
strExpected = new string(com1.Encoding.GetChars(com1.Encoding.GetBytes(strWrite.ToCharArray())));
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.WriteLine(strBldrToWrite.ToString());
strRead = com1.ReadTo(newLine);
if (0 != strBldrToWrite.ToString().CompareTo(strRead))
{
Console.WriteLine("ERROR!!! The string written: \"{0}\" and the string read \"{1}\" differ", strBldrToWrite, strRead);
retValue = false;
}
if (0 != com1.BytesToRead && (!isUTF7Encoding || 1 != com1.BytesToRead))
{
Console.WriteLine("ERROR!!! BytesToRead={0} expected 0", com1.BytesToRead);
retValue = false;
}
if (com1.IsOpen)
{
com1.Close();
}
if (com2.IsOpen)
{
com2.Close();
}
return(retValue);
}
public bool Read_LargeBuffer()
{
SerialPort com1 = TCSupport.InitFirstSerialPort();
SerialPort com2 = TCSupport.InitSecondSerialPort(com1);
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
string stringRcvBuffer;
bool retValue = true;
bool continueRunning = true;
int numberOfIterations = 0;
System.Threading.Thread writeToCom2Thread = new System.Threading.Thread(delegate()
{
while (continueRunning)
{
com1.Write(charXmitBuffer, 0, charXmitBuffer.Length);
++numberOfIterations;
}
});
char endChar = com1.NewLine[0];
char notEndChar = TCSupport.GetRandomOtherChar(endChar, TCSupport.CharacterOptions.None);
//Ensure the new line is not in charXmitBuffer
for (int i = 0; i < charXmitBuffer.Length; ++i)
{//Se any appearances of a character in the new line string to some other char
if (endChar == charXmitBuffer[i])
{
charXmitBuffer[i] = notEndChar;
}
}
com1.BaudRate = 115200;
com2.BaudRate = 115200;
com1.Encoding = System.Text.Encoding.Unicode;
com2.Encoding = System.Text.Encoding.Unicode;
com2.ReadTimeout = 10000;
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();
}
writeToCom2Thread.Start();
try
{
com2.ReadLine();
retValue = false;
Console.WriteLine("Err_2928aneieud Expected ReadLine() to throw timeoutException()");
}
catch (TimeoutException) { };
continueRunning = false;
writeToCom2Thread.Join();
com1.Write(com1.NewLine);
stringRcvBuffer = com2.ReadLine();
if (charXmitBuffer.Length * numberOfIterations == stringRcvBuffer.Length)
{
for (int i = 0; i < charXmitBuffer.Length * numberOfIterations; ++i)
{
if (stringRcvBuffer[i] != charXmitBuffer[i % charXmitBuffer.Length])
{
retValue = false;
Console.WriteLine("Err_292aneid Expected to read {0} actually read {1}", charXmitBuffer[i % charXmitBuffer.Length], stringRcvBuffer[i]);
break;
}
}
}
else
{
retValue = false;
Console.WriteLine("Err_292haie Expected to read {0} characters actually read {1}", charXmitBuffer.Length * numberOfIterations, stringRcvBuffer.Length);
}
com1.Close();
com2.Close();
return(retValue);
}
public void Read_DataReceivedBeforeTimeout()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
string endString = "END";
ASyncRead asyncRead = new ASyncRead(com1, endString);
System.Threading.Thread asyncReadThread =
new System.Threading.Thread(asyncRead.Read);
char endChar = endString[0];
char notEndChar = TCSupport.GetRandomOtherChar(endChar, TCSupport.CharacterOptions.None);
Debug.WriteLine(
"Verifying that ReadTo(string) will read characters that have been received after the call to Read was made");
//Ensure the new line is not in charXmitBuffer
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
//Se any appearances of a character in the new line string to some other char
if (endChar == charXmitBuffer[i])
{
charXmitBuffer[i] = notEndChar;
}
}
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();
}
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(charXmitBuffer, 0, charXmitBuffer.Length);
com2.Write(endString);
asyncRead.ReadCompletedEvent.WaitOne();
if (null != asyncRead.Exception)
{
Fail("Err_04448ajhied Unexpected exception thrown from async read:\n{0}", asyncRead.Exception);
}
else if (null == asyncRead.Result || 0 == asyncRead.Result.Length)
{
Fail("Err_0158ahei Expected Read to read at least one character");
}
else
{
char[] charRcvBuffer = asyncRead.Result.ToCharArray();
if (charRcvBuffer.Length != charXmitBuffer.Length)
{
Fail("Err_051884ajoedo Expected Read to read {0} characters actually read {1}", charXmitBuffer.Length, charRcvBuffer.Length);
}
else
{
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
if (charRcvBuffer[i] != charXmitBuffer[i])
{
Fail(
"Err_0518895akiezp Characters differ at {0} expected:{1}({2:X}) actual:{3}({4:X})", i,
charXmitBuffer[i], (int)charXmitBuffer[i], charRcvBuffer[i], (int)charRcvBuffer[i]);
}
}
}
}
VerifyReadTo(com1, com2, new string(charXmitBuffer), endString);
}
}
public void Read_ResizeBuffer()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(1023, TCSupport.CharacterOptions.ASCII);
int readResult;
Debug.WriteLine("Verifying that Read(char[], int, int) will compact data in the buffer buffer");
com1.Encoding = Encoding.ASCII;
com2.Encoding = Encoding.ASCII;
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();
}
//[] Fill the buffer up then read in all but one of the chars
var expectedChars = new char[charXmitBuffer.Length - 1];
var charRcvBuffer = new char[charXmitBuffer.Length - 1];
Array.Copy(charXmitBuffer, 0, expectedChars, 0, charXmitBuffer.Length - 1);
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
TCSupport.WaitForPredicate(() => com1.BytesToRead == charXmitBuffer.Length, 2000,
"Err_29829haie Expected to received {0} bytes actual={1}", charXmitBuffer.Length, com1.BytesToRead);
if (charXmitBuffer.Length - 1 != (readResult = com1.Read(charRcvBuffer, 0, charXmitBuffer.Length - 1)))
{
Fail("Err_55084aheid Expected to read {0} chars actual {1}", charXmitBuffer.Length - 1,
readResult);
}
TCSupport.VerifyArray(expectedChars, charRcvBuffer);
//[] Write 16 more cahrs and read in 16 chars
expectedChars = new char[16];
charRcvBuffer = new char[16];
expectedChars[0] = charXmitBuffer[charXmitBuffer.Length - 1];
Array.Copy(charXmitBuffer, 0, expectedChars, 1, 15);
com2.Write(charXmitBuffer, 0, 16);
TCSupport.WaitForPredicate(() => com1.BytesToRead == 17, 2000,
"Err_0516848aied Expected to received {0} bytes actual={1}", 17, com1.BytesToRead);
if (16 != (readResult = com1.Read(charRcvBuffer, 0, 16)))
{
Fail("Err_650848ahide Expected to read {0} chars actual {1}", 16, readResult);
}
Assert.Equal(expectedChars, charRcvBuffer);
//[] Write more chars and read in all of the chars
expectedChars = new char[charXmitBuffer.Length + 1];
charRcvBuffer = new char[charXmitBuffer.Length + 1];
expectedChars[0] = charXmitBuffer[15];
Array.Copy(charXmitBuffer, 0, expectedChars, 1, charXmitBuffer.Length);
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
TCSupport.WaitForPredicate(() => com1.BytesToRead == charXmitBuffer.Length + 1, 2000,
"Err_41515684 Expected to received {0} bytes actual={1}", charXmitBuffer.Length + 2, com1.BytesToRead);
if (charXmitBuffer.Length + 1 != (readResult = com1.Read(charRcvBuffer, 0, charXmitBuffer.Length + 1)))
{
Fail("Err_460574ajied Expected to read {0} chars actual {1}", charXmitBuffer.Length + 1, readResult);
}
Assert.Equal(expectedChars, charRcvBuffer);
}
}
public void Read_LargeBuffer()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
bool continueRunning = true;
int numberOfIterations = 0;
System.Threading.Thread writeToCom2Thread = new System.Threading.Thread(delegate()
{
while (continueRunning)
{
com1.Write(charXmitBuffer, 0, charXmitBuffer.Length);
++numberOfIterations;
}
});
char endChar = TCSupport.GenerateRandomCharNonSurrogate();
char notEndChar = TCSupport.GetRandomOtherChar(endChar, TCSupport.CharacterOptions.None);
//Ensure the new line is not in charXmitBuffer
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
//Se any appearances of a character in the new line string to some other char
if (endChar == charXmitBuffer[i])
{
charXmitBuffer[i] = notEndChar;
}
}
com1.BaudRate = 115200;
com2.BaudRate = 115200;
com1.Encoding = Encoding.Unicode;
com2.Encoding = Encoding.Unicode;
com2.ReadTimeout = 10000;
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();
}
writeToCom2Thread.Start();
Assert.Throws <TimeoutException>(() => com2.ReadTo(new string(endChar, 1)));
continueRunning = false;
writeToCom2Thread.Join();
com1.Write(new string(endChar, 1));
string stringRcvBuffer = com2.ReadTo(new string(endChar, 1));
if (charXmitBuffer.Length * numberOfIterations == stringRcvBuffer.Length)
{
for (int i = 0; i < charXmitBuffer.Length * numberOfIterations; ++i)
{
if (stringRcvBuffer[i] != charXmitBuffer[i % charXmitBuffer.Length])
{
Fail("Err_292aneid Expected to read {0} actually read {1}",
charXmitBuffer[i % charXmitBuffer.Length], stringRcvBuffer[i]);
break;
}
}
}
else
{
Fail("Err_292haie Expected to read {0} characters actually read {1}", charXmitBuffer.Length * numberOfIterations, stringRcvBuffer.Length);
}
}
}
public void Read_SurrogateBoundary()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = new char[32];
int result;
Debug.WriteLine("Verifying that Read(char[], int, int) works with reading surrogate characters");
TCSupport.GetRandomChars(charXmitBuffer, 0, charXmitBuffer.Length - 2, TCSupport.CharacterOptions.Surrogates);
charXmitBuffer[charXmitBuffer.Length - 2] = TCSupport.GenerateRandomHighSurrogate();
charXmitBuffer[charXmitBuffer.Length - 1] = TCSupport.GenerateRandomLowSurrogate();
com1.Encoding = Encoding.Unicode;
com2.Encoding = Encoding.Unicode;
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();
}
//[] First lets try with buffer size that is larger then what we are asking for
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
TCSupport.WaitForExpected(() => com1.BytesToRead, charXmitBuffer.Length * 2,
5000, "Err_018158ajid BytesToRead");
var charRcvBuffer = new char[charXmitBuffer.Length];
result = com1.Read(charRcvBuffer, 0, charXmitBuffer.Length - 1);
Assert.Equal(charXmitBuffer.Length - 2, result);
char[] actualChars = new char[charXmitBuffer.Length];
Array.Copy(charRcvBuffer, 0, actualChars, 0, result);
result = com1.Read(actualChars, actualChars.Length - 2, 2);
Assert.Equal(2, result);
Assert.Equal(charXmitBuffer, actualChars);
//[] Next lets try with buffer size that is the same size as what we are asking for
com2.Write(charXmitBuffer, 0, charXmitBuffer.Length);
TCSupport.WaitForExpected(() => com1.BytesToRead, charXmitBuffer.Length * 2,
5000, "Err_018158ajid BytesToRead");
charRcvBuffer = new char[charXmitBuffer.Length - 1];
result = com1.Read(charRcvBuffer, 0, charXmitBuffer.Length - 1);
Assert.Equal(charXmitBuffer.Length - 2, result);
actualChars = new char[charXmitBuffer.Length];
Array.Copy(charRcvBuffer, 0, actualChars, 0, result);
result = com1.Read(actualChars, actualChars.Length - 2, 2);
Assert.Equal(2, result);
Assert.Equal(charXmitBuffer, actualChars);
}
}
public void Read_Timeout()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
byte[] byteXmitBuffer = new UTF32Encoding().GetBytes(charXmitBuffer);
char[] charRcvBuffer = new char[charXmitBuffer.Length];
int result;
Debug.WriteLine(
"Verifying that Read(char[], int, int) works appropriately after TimeoutException has been thrown");
com1.Encoding = new UTF32Encoding();
com2.Encoding = new UTF32Encoding();
com1.ReadTimeout = 500; // 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();
}
//Write the first 3 bytes of a character
com2.Write(byteXmitBuffer, 0, 3);
Assert.Throws <TimeoutException>(() => com1.ReadChar());
Assert.Equal(3, com1.BytesToRead);
com2.Write(byteXmitBuffer, 3, byteXmitBuffer.Length - 3);
TCSupport.WaitForExpected(() => com1.BytesToRead, byteXmitBuffer.Length,
5000, "Err_91818aheid BytesToRead");
result = com1.ReadChar();
if (result != charXmitBuffer[0])
{
Fail("Err_0158ahei Expected ReadChar to read {0}({0:X}) actual {1}({1:X})", charXmitBuffer[0], result);
}
else
{
charRcvBuffer[0] = (char)result;
int readResult = com1.Read(charRcvBuffer, 1, charRcvBuffer.Length - 1);
if (readResult + 1 != charXmitBuffer.Length)
{
Fail("Err_051884ajoedo Expected Read to read {0} characters actually read {1}", charXmitBuffer.Length - 1, readResult);
}
else
{
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
if (charRcvBuffer[i] != charXmitBuffer[i])
{
Fail("Err_05188ahed Characters differ at {0} expected:{1}({1:X}) actual:{2}({2:X})", i, charXmitBuffer[i], charRcvBuffer[i]);
}
}
}
}
VerifyBytesReadOnCom1FromCom2(com1, com2, byteXmitBuffer, charXmitBuffer);
}
}
public void Read_DataReceivedBeforeTimeout()
{
using (SerialPort com1 = TCSupport.InitFirstSerialPort())
using (SerialPort com2 = TCSupport.InitSecondSerialPort(com1))
{
char[] charXmitBuffer = TCSupport.GetRandomChars(512, TCSupport.CharacterOptions.None);
char[] charRcvBuffer = new char[charXmitBuffer.Length];
ASyncRead asyncRead = new ASyncRead(com1);
System.Threading.Thread asyncReadThread =
new System.Threading.Thread(asyncRead.Read);
Debug.WriteLine(
"Verifying that ReadChar will read characters 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(charXmitBuffer, 0, charXmitBuffer.Length);
asyncRead.ReadCompletedEvent.WaitOne();
Assert.Null(asyncRead.Exception);
if (asyncRead.Result != charXmitBuffer[0])
{
Fail("Err_0158ahei Expected ReadChar to read {0}({0:X}) actual {1}({1:X})", charXmitBuffer[0], asyncRead.Result);
}
else
{
System.Threading.Thread.Sleep(1000); //We need to wait for all of the bytes to be received
charRcvBuffer[0] = (char)asyncRead.Result;
int readResult = com1.Read(charRcvBuffer, 1, charRcvBuffer.Length - 1);
if (readResult + 1 != charXmitBuffer.Length)
{
Fail("Err_051884ajoedo Expected Read to read {0} characters actually read {1}",
charXmitBuffer.Length - 1, readResult);
}
else
{
for (int i = 0; i < charXmitBuffer.Length; ++i)
{
if (charRcvBuffer[i] != charXmitBuffer[i])
{
Fail("Err_05188ahed Characters differ at {0} expected:{1}({1:X}) actual:{2}({2:X}) asyncRead.Result={3}",
i, charXmitBuffer[i], charRcvBuffer[i], asyncRead.Result);
}
}
}
}
}
}
