public bool NegTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest2: The IDictionary is readonly");
try
{
IDictionary iDictionary = new MyIDictionary();
iDictionary.Remove(new MyClass());
TestLibrary.TestFramework.LogError("103", "The NotSupportedException was not thrown as expected");
retVal = false;
}
catch (NotSupportedException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("104", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return(retVal);
}
public ProgramState Execute(ProgramState state)
{
MyIDictionary <int, MyPair <string, StreamReader> > fileTable = state.GetFileTab();
MyIDictionary <string, int> symTable = state.GetSymTab();
// 1. evaluate var_file_id to a value. If any error occurs, stop the execution
int value;
try
{
value = var_file_id.Evaluate(symTable);
}
catch (ExpressionEvaluationException e)
{
throw new MyStatementExecutionException("The file is not opened for reading.");
}
// 2. Use the value to get the entry into the file table and get the associated StreamReader
// object. If there is no entry in the file table for the value, we stop the execution
StreamReader sr;
try
{
sr = fileTable.Get(value).GetSecond();
}
catch (InvalidKeyMyDictionaryException)
{
throw new MyStatementExecutionException("Error. There is no entry (" + value + ") in the file table.");
}
// 3. call the Close() method
try
{
sr.Close();
}
catch (IOException e)
{
throw new MyStatementExecutionException("IO Error: " + e.ToString());
}
// 4. delete the entry from the file table
try
{
fileTable.Remove(value);
}
catch (InvalidKeyMyDictionaryException)
{
throw new MyStatementExecutionException("Error. There is no entry (" + value + ") in the file table.");
}
// 5. return
return(null);
}
public void Remove(int fileDescriptor)
{
if (!fileTable.TryGetValue(fileDescriptor, out Tuple <string, TextReader> value))
{
throw new FileTableException("File is not in the file table!");
}
value.Item2.Close();
fileTable.Remove(fileDescriptor);
positionTable.FreePosition(fileDescriptor);
}
public bool NegTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("NegTest2: The IDictionary is readonly");
try
{
IDictionary iDictionary = new MyIDictionary();
iDictionary.Remove(new MyClass());
TestLibrary.TestFramework.LogError("103", "The NotSupportedException was not thrown as expected");
retVal = false;
}
catch (NotSupportedException)
{
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("104", "Unexpected exception: " + e);
TestLibrary.TestFramework.LogInformation(e.StackTrace);
retVal = false;
}
return retVal;
}