//Stats
/**
* Private method to reset the EncryptWord object. It makes check to
* ensure ValidShift is true before setting State to ON.
* Pre-conditions:
* Initialized EncryptWord object.
* Post-conditions:
* Stat counters reset, shift value updated, State set to ON
* @param ShiftValGen list
*
*/
private void Reset(ShiftValGen list)
{
this.queries = 0;
this.Num_highGuess = 0;
this.Num_lowGuess = 0;
this.SumGuessValue = 0;
this.Num_Guess = 0;
this.ValidShift = list.getNext(ref this.shift);
if (!this.ValidShift)
{
currentState = State.OFF;
}
currentState = State.ON;
}
/**
* This method provides functionality to refresh an EncryptWord object
* which is in OFF state.
* Note that if Refresh does not change the State to ON indicates that
* ValidShift is false, caused when ShiftValGen list is empty.
* Pre-conditions:
* EncryptWord object State OFF
* Post-conditions:
* State ON
* @param ShiftValGen list
* @return true if reset success, false otherwise
*/
public bool Refresh(ShiftValGen list)
{
if (this.currentState == State.ON)
{
return(false);
}
if (this.currentState == State.OFF)
{
this.Reset(list);
if (this.currentState == State.OFF)
{
return(false);
}
}
return(true);
}
/**
* Construtor for EncryptWord object.
* Pre-conditions:
* Initialized ShiftValGen object.
* Post-conditions:
* Initialized EncryptWord object, State ON
* @param ShiftValGen list
*
*/
public EncryptWord(ShiftValGen list)
{
this.Reset(list);
}
/**
* This method provides functionality to execute the driver.
* Pre-conditions:
* None
* Post-conditions:
* None
*/
public void RunEncryptWordDriver()
{
Console.Write("Welcome the driver for EncryptWord class.\n" +
"This program instantiates a bunch of EncryptWord objects\n"
+ "and runs a series of test sequences to demonstrate\n" +
"functionality, input validations and state transitions.\n\n" +
"The interface will print a test label, input and output \n" +
"for each test. \n" +
"<sample test sequence label>...\n" +
"<input>\n" +
"<sample function label > [expected output]: output\n");
Console.Write("\nInitializing ShiftValList...\n");
ShiftValGen ListNums = new ShiftValGen();
Console.Write("Instantiateing List/collection of " +
"EncryptWord objects...\n");
List <EncryptWord> collection = new List <EncryptWord>
{
new EncryptWord(ListNums)
{
},
new EncryptWord(ListNums)
{
},
new EncryptWord(ListNums)
{
}
};
Console.Write("collection {0,1,2} initialized State ON\n");
Console.Write("Running Encrypt function test sequences....\n");
string text0 = "abcde";
string encryptdText0 = "";
Console.Write("Input Text : " + text0 + "\n");
bool flag0 = collection[0].Encrypt(text0, ref encryptdText0);
Console.Write("For collection[0] Encryption Success [True]: " +
flag0 + "\n");
Console.Write(" Encrypted Text: "
+ encryptdText0 + "\n");
encryptdText0 = "";
flag0 = collection[1].Encrypt(text0, ref encryptdText0);
Console.Write("For collection[1] Encryption Success [True]: " +
flag0 + "\n");
Console.Write(" Encrypted Text: "
+ encryptdText0 + "\n");
encryptdText0 = "";
flag0 = collection[2].Encrypt(text0, ref encryptdText0);
Console.Write("For collection[2] Encryption Success [True]: " +
flag0 + "\n");
Console.Write(" Encrypted Text: "
+ encryptdText0 + "\n");
Console.Write("\n----------------------\n");
Console.Write("Running Input Validation test sequences... \n");
Console.Write("Passing invalid arguments: \n");
Console.Write("--passing text of invalid length " +
"(less than 4 char)...\n");
string text11 = "xzy";
Console.Write("Input Text : " + text11 + "\n");
string encryptdText11 = "";
bool flag11 = collection[0].Encrypt(text11, ref encryptdText11);
Console.Write("For collection[0] Encryption Success [False]: " +
flag11 + "\n");
flag11 = collection[1].Encrypt(text11, ref encryptdText11);
Console.Write("For collection[1] Encryption Success [False]: " +
flag11 + "\n");
flag11 = collection[2].Encrypt(text11, ref encryptdText11);
Console.Write("For collection[2] Encryption Success [False]: " +
flag11 + "\n\n");
Console.Write("--passing text with invalid char (@,3,!,%)... \n");
string text14 = "#$%A";
Console.Write("Input Text : " + text14 + "\n");
string encryptdWord14 = "";
bool flag14 = collection[0].Encrypt(text14, ref encryptdWord14);
Console.Write("For collection[0] Encryption Success [False]: " +
flag14 + "\n");
flag14 = collection[1].Encrypt(text14, ref encryptdWord14);
Console.Write("For collection[1] Encryption Success [False]: " +
flag14 + "\n");
flag14 = collection[2].Encrypt(text14, ref encryptdWord14);
Console.Write("For collection[2] Encryption Success [False]: " +
flag14 + "\n");
Console.Write("\n----------------------\n");
Console.Write("Instantiate EncryptWord objects...\n");
Console.Write("Obj1 initialized State ON\n");
EncryptWord obj1 = new EncryptWord(ListNums);
Console.Write("Verify State ON by Running Encrypt test sequence..."
+ "\n");
string text33 = "ABCD";
string encryptdText33 = "";
Console.Write("Input Text : " + text33 + "\n");
bool flag33 = obj1.Encrypt(text33, ref encryptdText33);
Console.Write("Encryption Success [True]: " + flag33 + "\n");
Console.Write("Encrypted Text :" + encryptdText33 + "\n");
Console.Write("\n\n");
Console.Write("Running GuessShift function test sequences...\n" +
"Requires user input!\n");
int UserGuess;
int ShiftValue = 0; //Holds the correct shift value after
//RightGuess
GuessPrompts feedback;
bool repeat = true;
while (repeat)
{
Console.Write("Enter guess value (int): ");
var input = Console.ReadLine();
if (string.IsNullOrEmpty(input))
{
repeat = false;
break;
}
UserGuess = Convert.ToInt32(input);
if (UserGuess <= 0)
{
repeat = false;
break;
}
feedback = obj1.ShiftGuess(UserGuess);
if (feedback == GuessPrompts.RightGuess)
{
ShiftValue = UserGuess;
repeat = false;
}
Console.Write("Response from ShiftGuess, passing[" + UserGuess
+ "]: " + feedback + " \n");
}
Console.Write("\n\n");
Console.Write("Hit enter to continue...");
Console.ReadLine();
if (ShiftValue == 0)
{
Console.Write("GuessShift test sequence incomplete!\n");
Console.Write("Cannot Test Decrypt. User must guess the \n" +
"shift value in GuessShift sequence.");
}
else
{
Console.Write("Verify state transition to OFF\n"
+ "post RightGuess by Running Encrypt test sequence...\n");
string text = "ABCD";
string encryptdText = "null";
Console.Write("Input Text : " + text + "\n");
bool flag1 = obj1.Encrypt(text, ref encryptdText);
Console.Write("Encryption Success [False]: " + flag1 + "\n");
Console.Write("Encrypted Text [null]:" + encryptdText + "\n");
Console.Write("\n\n");
Console.Write("Decrypt function test sequence...\n");
Console.Write("Input Text(encrypted in previous step):" +
encryptdText33 + "\n");
string decryptText1 = "";
bool flag6 = obj1.Decrypt(encryptdText33, ShiftValue,
ref decryptText1);
Console.Write("Decrypt Success [True]: " + flag6 + "\n");
Console.Write("Output Decrypted Text : " + decryptText1 +
"\n");
}
Console.Write("\n----------------------\n");
Console.Write("Printing Stats.... \n");
Console.Write("obj1: \n" + obj1.getStats() + "\n");
Console.Write("\n\n");
Console.Write("Running Refresh function test sequence...\n");
Console.Write("\n----------------------\n");
if (ShiftValue == 0)
{
Console.Write("GuessShift test sequence incomplete.\n" +
"No State transition to OFF. Refresh not available.\n");
bool flag20 = obj1.Refresh(ListNums);
Console.Write("Refresh Success [False]: " + flag20 + "\n");
Console.Write("\n\n");
}
else
{
bool flag20 = obj1.Refresh(ListNums);
Console.Write("Refresh Success [True]: " + flag20 + "\n");
Console.Write("Verify state transition to ON post Refresh by\n"
+ "Running Encrypt test sequence...\n");
string text2 = "ZxYPqr";
Console.Write("Input Text :" + text2 + "\n");
string encryptdText2 = "";
bool flag2 = obj1.Encrypt(text2, ref encryptdText2);
Console.Write("Encryption Success [True]: " + flag2 + "\n");
Console.Write("Encrypted Text: " + encryptdText2 + "\n");
Console.Write("\n\n");
}
Console.Write("Printing Stats after Refresh.... \n");
Console.Write("obj1: \n" + obj1.getStats() + "\n");
Console.Write("\n\n");
Console.Write("End of Program. Thank you\n");
}