//Evaluate
public string Calculuate(string input)
{
/* if (input.Contains("="))
{
Parse.ExtractCharacter();
// string letter = "a";
//return letter;
}
*/
if (input == "lastq")
{
if (Stack.lastQuestion == null)
{
return "No Operation entered";
}
return Stack.lastQuestion;
}
else if (input == "last")
{
if (Stack.lastQuestion == null)
{
return "No Operation entered";
}
return Stack.last;
}
else
{
Parse parse = new Parse();
var operans = parse.GetNumbers(input);
var op = parse.GetOperator(input);
var result = 0;
switch (op)
{
case '+':
result = Addition.AddNum(operans);
break;
case '-':
result = Subtraction.SubNum(operans);
break;
case '*':
result = Multiplication.MultiplyNum(operans);
break;
case '/':
result = Division.DivideNum(operans);
break;
case '%':
result = Modulus.ModNum(operans);
break;
default:
throw new ArgumentException("incorrect format");
}
Stack.last = result.ToString();
Stack.lastQuestion = input;
return result.ToString();
}
}
public void DoesEquationHaveNumbers()
{
var calc = new Parse();
var numb = calc.GetNumbers("20+5");
var expected = new string[] { "20", "5" };
CollectionAssert.AreEqual(expected, numb);
}
public void IsNumberInIndexOne()
{
Parse parse = new Parse();
string[] indexOne = parse.GetNumbers("5+8");
Assert.AreEqual("8", indexOne[1]);
}
public void IsNumberInIndexZero()
{
Parse parse = new Parse();
string[] indexZero = parse.GetNumbers("5+8");
Assert.AreEqual("5", indexZero[0]);
}
public void GetNumbersShouldReturnTwoStrings()
{
var calc = new Parse();
var stringArray = calc.GetNumbers("12+16");
var expected = new string[] { "12", "16" };
CollectionAssert.AreEqual(stringArray, expected);
}