public void StackCanHoldLastQuestion()
{
Stack test1 = new Stack();
test1.lastq = "1 + 1";
string expected = "1 + 1";
Assert.AreEqual(expected, test1.lastq);
}
public string DoMath(Stack stack)
{
if (stack.GetDictionary().ContainsKey(InputArray[0]))
{
Dictionary<string, string> dictionary = stack.GetDictionary();
string value = dictionary[InputArray[0]];
InputArray[0] = value;
}
if (stack.GetDictionary().ContainsKey(InputArray[2]))
{
Dictionary<string, string> dictionary = stack.GetDictionary();
string value = dictionary[InputArray[2]];
InputArray[2] = value;
}
switch (InputArray[1])
{
case "+" :
return (int.Parse(InputArray[0]) + int.Parse(InputArray[2])).ToString();
case "-":
return (int.Parse(InputArray[0]) - int.Parse(InputArray[2])).ToString();
case "*":
return (int.Parse(InputArray[0]) * int.Parse(InputArray[2])).ToString();
case "/":
return (int.Parse(InputArray[0]) / int.Parse(InputArray[2])).ToString();
case "%":
return (int.Parse(InputArray[0]) % int.Parse(InputArray[2])).ToString();
default:
throw new ArgumentException("no good");
}
}
public void StackCanReturnLast()
{
Evaluate oldStack = new Evaluate("2 * 8");
Evaluate newStack = new Evaluate("2+5");
Stack myStack = new Stack(newStack);
Assert.AreEqual("2+5", myStack.Lastq());
}
public void StackEnsureConstantsArentCaseSensitive()
{
Stack expression = new Stack();
expression.AddConstant("A", 2);
var expected = expression.ReturnConstant("a");
Assert.AreEqual(2, expected);
}
public void StackEnsureICanCreateInstance()
{
Parse input = new Parse("10%4");
Evaluate eval = new Evaluate(input);
Stack stack = new Stack(eval);
Assert.IsNotNull(stack);
}
public void StackCanHoldLastAnswer()
{
Stack test1 = new Stack();
test1.last = 2;
int expected = 2;
Assert.AreEqual(expected, test1.last);
}
public void StackEnsureICanSetAndGetLastQuestion()
{
Stack expression = new Stack();
expression.SetLastQ("2+2");
string expectedStr = "2+2";
string actualStr = expression.GetLastQ();
Assert.AreEqual(expectedStr, actualStr);
}
public void StackConstantsAreCaseInsensitive()
{
Stack test1 = new Stack();
test1.MyAdd('A', 2);
int value;
bool expected = test1.constants.TryGetValue('a', out value);
Assert.AreEqual(2, value);
}
public void StackCanRetrieveCurrentAnswer()
{
Parse input = new Parse("20 / 5");
Evaluate eval = new Evaluate(input);
Stack stack = new Stack(eval);
int expected = stack.currentAnswer;
Assert.AreEqual(expected, 4);
}
public void StackEnsureICanSetAndGetLastAnswer()
{
Stack expression = new Stack();
expression.SetLastA(2);
int expectedInt = 2;
int actualInt = expression.GetLastA();
Assert.AreEqual(expectedInt, actualInt);
}
public void StackEnsureICanSetandGetConstant()
{
Stack expression = new Stack();
expression.AddConstant("A", 2);
var actual = expression.ReturnConstant("A");
var expected = 2;
Assert.AreEqual(expected, actual);
}
public void StackConstantAlreadyDefined()
{
Stack test1 = new Stack();
test1.MyAdd('a', 9);
test1.MyAdd('A', 2);
int value;
bool expected = test1.constants.TryGetValue('a', out value);
Assert.AreEqual(2, value);
}
public void StackCanAssignConstant()
{
Parse input = new Parse("x = 3");
Evaluate eval = new Evaluate(input);
Stack stack = new Stack(eval);
char expected = 'x';
List<char> actual_constants = stack.listOfConstantsUsed;
CollectionAssert.Contains(actual_constants, expected);
}
public void StackEnsureICanAddKeysAndValuesToTheDictionary()
{
Stack test = new Stack();
string user_key = "x";
int user_value = 27;
test.AddVariables(user_key, user_value);
List<string> expected = test.FindAllKeysAndValues();
Assert.AreEqual(expected, "x=27");
}
public void StackACanBeAConstant()
{
Stack test1 = new Stack();
test1.constants.Add('a', 1);
int value;
bool expected = test1.constants.TryGetValue('a', out value);
Assert.IsTrue(expected);
Assert.AreEqual(1, value);
}
public string AddConstant(Stack stack)
{
if (stack.GetDictionary().ContainsKey(InputArray[0]))
{
stack.dictionary[InputArray[0]] = InputArray[2];
return InputArray[0] + " " + InputArray[1] + " " + InputArray[2];
}
stack.AddToDictionary(InputArray[0], InputArray[2]);
return InputArray[0] + " " + InputArray[1] + " " + InputArray[2];
}
public void StackCanRetrieveLastQ()
{
Parse input = new Parse("10%4");
Evaluate eval = new Evaluate(input);
Parse input2 = new Parse("lastq");
eval.EvaluateExpression(input2);
Stack stack = new Stack(eval);
string expected = stack.lastQ;
Assert.AreEqual(expected, "10%4");
}
public string DoMathOrAddConstant(Stack stack)
{
if (InputArray[1] == "=")
{
return AddConstant(stack);
}
else
{
return DoMath(stack);
}
}
public void StackEnsureGettersAndSettersWork()
{
Stack test = new Stack();
decimal number = 5;
test.LastAnswer = number;
string expression = "1+2";
test.LastExpression = expression;
string expected_expression = test.LastExpression;
decimal expected_number = test.LastAnswer;
Assert.AreEqual(expected_expression, expression);
Assert.AreEqual(expected_number, number);
}
public void StackCanEvalExpressionWithPrevDeclaredConstant()
{
Parse input = new Parse("x = 3");
Parse input2 = new Parse("x*5");
Evaluate eval = new Evaluate(input);
eval.EvaluateExpression(input2);
Stack stack = new Stack(eval);
// Act
int expected = stack.currentAnswer;
//Assert
Assert.AreEqual(expected, 15);
}
static void Main(string[] args)
{
int count = 0;
string prompt = "[" + count.ToString() + "]>";
string instructions = "Type in a binary equation, then press enter." + System.Environment.NewLine + "Type 'quit' or 'exit' to exit the program." + System.Environment.NewLine + prompt;
Console.Write(instructions);
string userInput = Console.ReadLine();
Parse firstInput = new Parse(userInput);
Evaluate eval = new Evaluate(firstInput);
Stack stack = new Stack(eval);
count += 1;
prompt = "[" + count.ToString() + "]>";
Console.Write(" = " + stack.currentAnswer.ToString() + System.Environment.NewLine + prompt);
userInput = Console.ReadLine();
//ProgramInitializer PI = new ProgramInitializer();
//string userInput = Console.ReadLine();
//PI.EvaluateFirstExpression(userInput);
//Evaluate eval = PI.FirstEval;
//Stack stack = PI.ProgramStack;
//Console.Write(" = " + stack.currentAnswer.ToString() + System.Environment.NewLine);
//userInput = Console.ReadLine();
while (userInput != "quit" || userInput != "exit")
{
try
{
Parse input = new Parse(userInput);
eval.EvaluateExpression(input);
stack.stackEvaluate(eval);
count += 1;
prompt = "[" + count.ToString() + "]>";
Console.Write(" = " + stack.currentAnswer.ToString() + System.Environment.NewLine + prompt);
userInput = Console.ReadLine();
}
catch (Exception ex)
{
if (userInput == "quit" || userInput == "exit")
{
break;
}
else
{
prompt = "[" + count.ToString() + "]>";
Console.Write("There was an error. Please try again." + System.Environment.NewLine + prompt);
userInput = Console.ReadLine();
}
}
}
}
public static string Eval(string input, Stack stack)
{
Parse StringToEvaluate = new Parse(input);
StringToEvaluate.ParseInput();
try
{
return StringToEvaluate.DoMathOrAddConstant(stack);
}
catch (Exception)
{
return "invalid input";
}
}
static void Main(string[] args)
{
Parse userInput = new Parse();
Evaluate expression = new Evaluate();
Stack stack = new Stack();
bool runProgram = true;
int counter = 0;
while (runProgram)
{
Console.Write("[" + counter + "]> ");
string response = Console.ReadLine();
if (response == "exit" || response == "quit")
{
Console.WriteLine("Bye!! \nPress any key to close program...");
runProgram = false;
Console.ReadKey();
}
else if(response == "lastq")
{
Console.WriteLine(" " + stack.LastExpression);
}
else if (response == "last")
{
Console.WriteLine(" " + stack.LastAnswer);
}
else
{
string splitResponse = userInput.formatInput(response);
if (splitResponse == "Invalid Expression. Please try again!")
{
Console.WriteLine(splitResponse);
}
else
{
userInput.splitString(splitResponse);
decimal user_answer =
expression.calculate(userInput.FirstNumber, userInput.Operator, userInput.SecondNumber);
counter += 1;
Console.WriteLine(" " + "=" + " " + user_answer);
stack.LastExpression = response;
stack.LastAnswer = user_answer;
}
}
}
}
static void Main(string[] args)
{
Stack stack = new Stack();
Console.Write("0" + '>');
string input="";
int counter = 0;
while (true)
{
input = Console.ReadLine();
if (!input.Contains("=")) { counter++; };
Console.WriteLine(Evaluate.Eval(input, stack));
Console.Write(counter.ToString() + '>');
if (input.ToLower() == "exit" || input.ToLower() == "quit") { break; }
}
}
public void StackEnsureCanInstantiate()
{
Stack stack = new Stack();
Assert.IsNotNull(stack);
}
public void StackExists()
{
Stack test1 = new Stack();
}
public void StackEnsureICanCreateInstance()
{
Stack stack1 = new Stack();
Assert.IsNotNull(stack1);
}
public void StackEnsureICannotOverrideConstant()
{
Stack expression = new Stack();
expression.AddConstant("A", 2);
expression.AddConstant("A", 4);
}
public void StackEnsureICannotReturnAConstanThatHasNotBeenSet()
{
Stack expression = new Stack();
expression.ReturnConstant("A");
}
public void StackEnsureICanCreateAClassInstance()
{
Stack test = new Stack();
Assert.IsNotNull(test);
}
