public void EvaluateReturnLastAnswer()
{
Evaluate test1 = new Evaluate();
int expected = 4;
int actual = test1.last("2 + 2");
Assert.AreEqual(expected, actual);
}
public void EvaluateReturnLastQuestion()
{
Evaluate test1 = new Evaluate();
string expected = "2 + 2";
string actual = test1.lastq("2 + 2");
Assert.AreEqual(expected, actual);
}
public void EvaluateCountWorks()
{
Evaluate test1 = new Evaluate();
test1.DoMath("4 + 2");
test1.DoMath("4 + 4");
Assert.AreEqual(2, test1.count);
}
public void EvalCanAddTwoNumbers()
{
Parse input = new Parse("3 + 4");
Evaluate eval = new Evaluate(input);
int expected = eval.result;
Assert.AreEqual(expected, 7);
}
public void EvalAssignUsedConstantThrowsException()
{
Parse input = new Parse("x = 3");
Parse input2 = new Parse("x = 10");
Evaluate eval = new Evaluate(input);
eval.EvaluateExpression(input2);
}
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 EvaluateCanExecuteBasicOperation()
{
Parse parse = new Parse("1 + 5");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Assert.AreEqual("6", eval.Answer);
}
public void stackEvaluate(Evaluate eval)
{
lastQ = eval.lastQ;
lastAns = eval.result;
currentAnswer = eval.result;
listOfConstantsUsed = eval.ListOfConstantsUsed;
}
public void EvaluateEnsureICanGetARemainder()
{
Parse a_parse = new Parse("20 % 3");
Evaluate eval = new Evaluate(a_parse);
int actual = eval.result;
Assert.AreEqual(2, actual);
}
static void Main(string[] args)
{
Console.WriteLine("What is your name?");
string userName = Console.ReadLine();
Parse p = new Parse();
Evaluate e = new Evaluate();
bool run = true;
while (run)
{
Console.WriteLine(userName + " Define your mathematical operation");
string input = Console.ReadLine();
if (input.ToUpper() == "LASTQ")
{
Console.WriteLine(e.lastExpression());
run = false;
break;
}
string oper = p.getOperator(input);
int num1 = p.getNumberOne(input);
int num2 = p.getNumberTwo(input);
int answer = e.ExecuteMethod(num1, num2, oper);
Console.WriteLine("The answer to your operation is: " + answer);
}
Console.WriteLine("Press any key to exit");
Console.ReadLine();
}
static void Main(string[] args)
{
int count = 0;
Constant currentConstant = new Constant();
Evaluate expression;
while (true)
{
Console.Write("[{0}]> ", count);
string input = Console.ReadLine();
expression = new Evaluate(input, currentConstant);
if (input.ToLower() == "exit" || input.ToLower() == "quit")
{
break;
}
else if (input.IndexOf("=")> -1)
{
//set variable
Parse addConstant = new Parse(input, currentConstant);
addConstant.setOperatorIndex();
currentConstant.addConst(addConstant.StringFirst(), addConstant.secondNum());
// = saved 'x' as '3'
Console.WriteLine("= saved '" + addConstant.StringFirst() + "' as '" + addConstant.secondNum() + "'");
}
else
{
int answer = expression.doMath();
Console.WriteLine(" = {0}", answer);
count++;
}
}
}
public void StackEnsureICanCreateInstance()
{
Parse input = new Parse("10%4");
Evaluate eval = new Evaluate(input);
Stack stack = new Stack(eval);
Assert.IsNotNull(stack);
}
public void EvaluateCanAssignConstant()
{
Parse parse = new Parse("q= 7");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Assert.AreEqual("Stored: q = 7", eval.Answer);
}
public void EvaluateCanReturnBlankExecuteCommand()
{
Parse parse = new Parse("lastq");
Evaluate eval = new Evaluate(parse);
eval.ExecuteCommand();
Assert.AreEqual("There are no commands stored.", eval.Answer);
}
public void EvaluateEnsureICanDoDivision()
{
Parse a_parse = new Parse("21 / 3");
Evaluate eval = new Evaluate(a_parse);
int actual = eval.result;
Assert.AreEqual(7, actual);
}
public void ConstantCanAdd()
{
Constant newConstant = new Constant();
newConstant.addConst("a", 2);
Evaluate twoPlusThree = new Evaluate("a + 3", newConstant);
Assert.AreEqual(5, twoPlusThree.doMath());
}
public void EvaluateEnsureICanDoAddition()
{
Parse a_parse = new Parse("21 + 3");
Evaluate eval = new Evaluate(a_parse);
int actual = eval.result;
Assert.AreEqual(24, actual);
}
public void EvaluateEnsureICanDoSubtraction()
{
Parse a_parse = new Parse("21 - 3");
Evaluate eval = new Evaluate(a_parse);
int actual = eval.result;
Assert.AreEqual(18, actual);
}
public void EvaluateEnsureICanDoMultiplication()
{
Parse a_parse = new Parse("2 * 3");
Evaluate eval = new Evaluate(a_parse);
int actual = eval.result;
Assert.AreEqual(6, actual);
}
public void EvaluateInputWorksForConstantAddition()
{
string input = "a+5";
Constant constant = new Constant();
constant.AddConstant('a', 1);
Evaluate newSession = new Evaluate();
Assert.AreEqual(6, newSession.EvaluateInput(input, constant));
}
public void EvaluateInputConstantSubtract()
{
string input = "a-8";
Constant constant = new Constant();
constant.AddConstant('a', 7);
Evaluate newSession = new Evaluate();
Assert.AreEqual(2, newSession.EvaluateInput(input, constant));
}
public void EvaluateInputConstantMultiply()
{
string input = "a*8";
Constant constant = new Constant();
constant.AddConstant('a', 1);
Evaluate newSession = new Evaluate();
Assert.AreEqual(5, newSession.EvaluateInput(input, constant));
}
public void EvaluateInputConstantModulo()
{
string input = "a%5";
Constant constant = new Constant();
constant.AddConstant('a', 11);
Evaluate newSession = new Evaluate();
Assert.AreEqual(1, newSession.EvaluateInput(input, constant));
}
public void EvaluateInputConstantDivision()
{
string input = "a/5";
Constant constant = new Constant();
constant.AddConstant('a', 10);
Evaluate newSession = new Evaluate();
Assert.AreEqual(2, newSession.EvaluateInput(input, constant));
}
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 EvaluateCanInstantiateWithParseObj()
{
Parse parse = new Parse("1 / 3");
parse.Compute();
Evaluate eval = new Evaluate(parse);
Assert.AreEqual(parse, eval.ParsedInput);
Assert.AreEqual(1, eval.ParsedInput.FirstNumArg);
}
public void EvalAddsMultipleToResultHistory()
{
Parse input = new Parse("-10 - 2");
Parse input2 = new Parse("5*5");
Evaluate eval = new Evaluate(input); // Initializes session
eval.EvaluateExpression(input2); // Every subsequent parse/equation gets passed to evaluateExpression method
List<int> expected = eval.resultHistory;
CollectionAssert.AreEqual(expected, new List<int>() { -12, 25 });
}
public void EvaluateTestOperateWithSubtract()
{
string input = "2 - 1";
ProcessInput PI = new ProcessInput(input);
Evaluate ev = new Evaluate(PI.GetFirstInputNumber(), PI.GetOperator(), PI.GetSecondInputNumber());
int expected = 1;
Assert.AreEqual(expected, ev.Operate());
}
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 EvaluateCanSubstitueConstants()
{
Parse parse = new Parse("q= 7");
Evaluate eval = new Evaluate(parse);
eval.Execute();
Parse parseTwo = new Parse("q + 5");
eval.ParsedInput = parseTwo;
eval.SubstituteConstants();
Assert.AreEqual(7, eval.ParsedInput.FirstNumArg);
}
static void Main(string[] args)
{
Parser parser = new Parser();
Stack stack = new Stack();
Dictionary <char, int> constants = new Dictionary <char, int>();
// initialize Evaluator HERE
Evaluate evaluate = new Evaluate();
int counter = 0;
List <string> Escape = new List <string>()
{
"quit", "exit", "escape", "stop"
}; // exit commands
string lastq = "lastq";
string lastanswer = "last";
// ask the user for a basic mathematical equation
Console.WriteLine("Please type a basic expression you would like me to find the answer to.");
Console.WriteLine("Include one of the following operators: + - * / %.");
Console.WriteLine("Get your last answer by typing last");
Console.WriteLine("Get your last question by typing lastq");
Console.WriteLine("You can also define constants to use in your expressions. ( x = 1 )");
Console.WriteLine("Get a list of constants by typing constants");
Console.WriteLine("Exit at anytime by typing exit / quit / escape / stop");
while (true)
{
string userInput = ConsoleReadLineWithDefault($"[{counter}]> ");
counter++;
if (Escape.Contains(userInput))
{
Console.WriteLine("Bye!!");
System.Threading.Thread.Sleep(1000);
Environment.Exit(0);
}
else if (userInput.Equals(lastq))
{
// lastq from stack
Console.WriteLine(stack.LastQuery);
}
else if (userInput.Equals(lastanswer))
{
// calls lastanswer from stack
Console.WriteLine(stack.LastAnswer);
}
else if (userInput.Equals("constants"))
{
foreach (KeyValuePair <char, int> kvp in constants)
{
Console.WriteLine("Constant = {0}, Value = {1}", kvp.Key, kvp.Value);
}
}
else
{
//evaluate input
try
{
// send user input to parser function=
stack.LastQuery = userInput;
parser.ParseInput(userInput);
int firstTerm = 0;
int secondTerm = 0;
if (parser.Operator.Equals('='))
{
int n;
bool isNumeric = int.TryParse(parser.FirstTerm, out n);
if (isNumeric == false)
{
try
{
constants.Add(char.Parse(parser.FirstTerm.ToLower()), int.Parse(parser.SecondTerm));
}
catch (ArgumentException)
{
Console.WriteLine($"A constant with key \"{parser.FirstTerm}\" already exists.");
}
}
else
{
Console.WriteLine($"Invalid constant! Please use lowercase letters for constants.");
}
}
else
{
if (parser.FirstTerm.Length > 1)
{
if (parser.SecondTerm.Length > 1)
{
firstTerm = int.Parse(parser.FirstTerm);
secondTerm = int.Parse(parser.SecondTerm);
}
else
{
firstTerm = int.Parse(parser.FirstTerm);
if (constants.ContainsKey(char.Parse(parser.SecondTerm)))
{
secondTerm = constants[char.Parse(parser.SecondTerm)];
}
else
{
secondTerm = int.Parse(parser.SecondTerm);
}
}
}
else if (parser.SecondTerm.Length > 1 && parser.FirstTerm.Length == 1)
{
if (constants.ContainsKey(char.Parse(parser.FirstTerm)))
{
firstTerm = constants[char.Parse(parser.FirstTerm)];
}
else
{
firstTerm = int.Parse(parser.FirstTerm);
}
secondTerm = int.Parse(parser.SecondTerm);
}
else if (constants.ContainsKey(char.Parse(parser.FirstTerm.ToLower())) && constants.ContainsKey(char.Parse(parser.SecondTerm)))
{
firstTerm = constants[char.Parse(parser.FirstTerm.ToLower())];
secondTerm = constants[char.Parse(parser.SecondTerm)];
}
else if (constants.ContainsKey(char.Parse(parser.FirstTerm.ToLower())))
{
firstTerm = constants[char.Parse(parser.FirstTerm.ToLower())];
secondTerm = int.Parse(parser.SecondTerm);
}
else if (constants.ContainsKey(char.Parse(parser.SecondTerm)))
{
firstTerm = int.Parse(parser.FirstTerm);
secondTerm = constants[char.Parse(parser.SecondTerm.ToLower())];
}
else
{
firstTerm = int.Parse(parser.FirstTerm);
secondTerm = int.Parse(parser.SecondTerm);
}
int calculatedResult = evaluate.Calculate(firstTerm, secondTerm, parser.Operator); //test code -- fix when parser updated
stack.LastAnswer = calculatedResult;
Console.WriteLine($" = {calculatedResult}");
}
}
catch (Exception)
{
Console.WriteLine($"Sorry, { userInput } is not a valid request.");
Console.WriteLine("Try again, something more simple like: 2 + 1. Take it easy on me");
}
}
}
}
