Ejemplo n.º 1
0
        public string Calculate(string input)
        {
            // creates a new RegexProcessor
            RegexUtil regexProcessing = new RegexUtil();

            // creates a new setting ConstantParser
            ConstantParser constantSetting = new ConstantParser();

            // extract integers
            ArrayList integers = regexProcessing.ExtractNums(input);

            // extracts operand
            string thisOp = regexProcessing.ExtractsOp(input);

            // holds answer value
            string answer;

            // make a new instance of the applicable class per the
            // operand extracted
            switch (thisOp)
            {
                case "+":
                    AddIt thisAddExp = new AddIt();
                    answer = thisAddExp.Addition(integers).ToString();
                    LastQnA.LastAns = Convert.ToInt32(answer);
                    LastQnA.LastQ = input;
                    return answer;
                case "-":
                    SubtractIt thisSubExp = new SubtractIt();
                    answer = thisSubExp.Subtraction(integers).ToString();
                    LastQnA.LastAns = Convert.ToInt32(answer);
                    LastQnA.LastQ = input;
                    return answer;
                case "*":
                    MultiplyIt thisMultiExp = new MultiplyIt();
                    answer = thisMultiExp.Multiplication(integers).ToString();
                    LastQnA.LastAns = Convert.ToInt32(answer);
                    LastQnA.LastQ = input;
                    return answer;
                case "/":
                    DivideIt thisDivExp = new DivideIt();
                    answer = thisDivExp.Division(integers).ToString();
                    LastQnA.LastAns = Convert.ToInt32(answer);
                    LastQnA.LastQ = input;
                    return answer;
                case "%":
                    ModIt thisModExp = new ModIt();
                    answer = thisModExp.Modulation(integers).ToString();
                    LastQnA.LastAns = Convert.ToInt32(answer);
                    LastQnA.LastQ = input;
                    return answer;
                case "=":
                    answer = "Your value has been set";
                    return answer;
                default: throw new ArgumentException("Input doesn't contain an operand understood {0}", thisOp);
            }
        }
Ejemplo n.º 2
0
 public void GettingConstantValueWorks()
 {
     Constants.AddKey2Dictionary("y", 6);
     RegexUtil TestingRegex = new RegexUtil();
     string input = "y + 6";
     ArrayList actual = TestingRegex.ExtractNums(input);
     ArrayList expected = new ArrayList();
     expected.Add(6);
     expected.Add(6);
     CollectionAssert.AreEqual(expected, actual);
 }
Ejemplo n.º 3
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 public void extractsNumsTest()
 {
     string input = "3 + 4";
     RegexUtil processor = new RegexUtil();
     ArrayList answer = processor.ExtractNums(input);
     ArrayList expected = new ArrayList();
     expected.Add(3);
     expected.Add(4);
     CollectionAssert.AreEqual(expected, answer);
 }
Ejemplo n.º 4
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 public void DoesNotTakeNoOpPresent()
 {
     string input = "24";
     RegexUtil process = new RegexUtil();
     ArrayList answer = process.ExtractNums(input);
 }
Ejemplo n.º 5
0
 public void doesNotTakeBadInputWithTwoOps()
 {
     string input = "3 + %";
     RegexUtil processor = new RegexUtil();
     ArrayList answer = processor.ExtractNums(input);
 }
Ejemplo n.º 6
0
 public void DoesNotTakeBadInput2()
 {
     string input = "+ 24 5";
     RegexUtil processor = new RegexUtil();
     ArrayList answer = processor.ExtractNums(input);
 }
Ejemplo n.º 7
0
 public void DoesNotTakeAlphabet()
 {
     string input = "abc + def";
     RegexUtil process = new RegexUtil();
     ArrayList answer = process.ExtractNums(input);
 }