static void ConsoleReadOperator(Calc calc)
{
while (!(calc.CurrentState is OpperatorEntredState)) {
Console.Write ("Enter operator (+ - * /): ");
String opperator = Console.ReadLine ();
HandleMenuInterupt (opperator);
calc.enterOp (opperator);
}
}
static void bootstrap(Calc calc)
{
ConsoleReadOperand (calc); //initial
calc.enterOp ("+");
calc.compute ();
}
static void ConsoleReadOperator(Calc calc)
{
while (!(calc.CurrentState is OpperatorEntredState)) {
Console.Write ("Operation: ");
String opperator = Console.ReadLine ();
if (HandleMenuInterupt (opperator, calc)) {
continue; //restart while loop
}
calc.enterOp (opperator);
if (calc.CurrentState is ErrorState) {
Console.WriteLine ("ERROR! Enter an operation.");
Console.WriteLine ("Options are: c, +, -, *, /, p, r, m, q, M, A, R, I");
}
}
}
public void TestCase()
{
Calc c=new Calc();
Assert.True(c.CurrentState is StartState);
c.enterOperand("3 4");
Assert.True(c.CurrentState is OpperandEnteredState);
Assert.AreEqual(c.Total, new Complex(0,0));
Assert.AreEqual(new Complex(3,4), c.Opperand2);
//should fail b/c there's no operator to use!
c.compute();
Assert.IsTrue(c.CurrentState is ErrorState);
//add operator
c.enterOp("+");
c.compute();
Complex answer=new Complex(3,4);
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(answer, c.Total);
Assert.AreEqual(answer, c.Opperand1);
//now let's subtract and check if we get 0+0i
c.enterOperand("3 4");
c.enterOp("-");
c.compute();
answer=new Complex(0,0);
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(answer, c.Total);
Assert.AreEqual(answer, c.Opperand1);
//now lets add 5-6i
Complex old_lhs=c.Opperand1;
c.enterOp("+");
Assert.IsTrue(c.CurrentState is OpperatorEntredState);
c.enterOperand("5 -6");
Assert.AreEqual(new Complex(5,-6), c.Opperand2);
c.compute();
answer=new Complex(5,-6);
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(answer.ToString(), c.Total.ToString());
Assert.AreEqual(old_lhs.ToString(), c.Opperand1.ToString());
//test multplication (5-6i) * (2+3i) = (28+3i)
c.enterOp("*");
Assert.AreEqual(c.Total.ToString(), c.Opperand1.ToString());
c.enterOperand("2 3");
c.compute();
answer=new Complex(28,3);
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(answer.ToString(), c.Total.ToString());
//test division (28+3i) / (3-2i)=(6+5i)
c.enterOp("/");
c.enterOperand("3 -2");
c.compute();
answer=new Complex(6,5);
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(answer.ToString(), c.Total.ToString());
//test error handling
Complex opp1=c.Opperand1;
Complex opp2=c.Opperand2;
c.enterOperand("3");
Assert.IsTrue(c.CurrentState is ErrorState);
//ensure no opperands are changed
Assert.AreEqual(opp1, c.Opperand1);
Assert.AreEqual(opp2, c.Opperand2);
Assert.AreEqual(answer.ToString(), c.Total.ToString()); //ensure previous sum remains
//enter bad input again!
c.enterOperand("3 3 3 3 3");
Assert.IsTrue(c.CurrentState is ErrorState);
//ensure no opperands are changed
Assert.AreEqual(opp1, c.Opperand1);
Assert.AreEqual(opp2, c.Opperand2);
Assert.AreEqual(answer.ToString(), c.Total.ToString()); //ensure previous sum remains
//test bad operatOR inputs
IBinOp old_op=c.pending_op;
c.enterOp("a");
Assert.IsTrue(c.CurrentState is ErrorState);
//ensure no opperands are changed
Assert.AreEqual(opp1, c.Opperand1);
Assert.AreEqual(opp2, c.Opperand2);
Assert.AreEqual(old_op, c.pending_op);
Assert.AreEqual(answer.ToString(), c.Total.ToString()); //ensure previous sum remains
//check that op1 and op2 and opp are same from before errors started
Assert.AreEqual(opp1, c.Opperand1);
Assert.AreEqual(opp2, c.Opperand2);
Assert.AreEqual(old_op, c.pending_op);
c.enterOp("+");
c.enterOperand("6 6");
c.compute();
answer=new Complex(12,11);
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(answer.ToString(), c.Total.ToString());
//reset calc
c.Clear();
Assert.IsTrue(c.CurrentState is StartState);
Assert.AreEqual(new Complex(0,0), c.Opperand1);
Assert.AreEqual(new Complex(0,0), c.Opperand2);
//initialize for console calc
c.enterOperand("3 4");
c.enterOp("+");
c.compute();
//now it's ready for the while loop
c.enterOperand("1 2");
c.compute();
Assert.IsTrue(c.CurrentState is CompState);
Assert.AreEqual(new Complex(4,6), c.Total);
}