/// <summary>
/// Does the math operation.
/// </summary>
private void do_math_operation()
{
/// <sumamry> Variable lastOperator stores last operation which will be performed </summary>
switch (lastOperator)
{
case "+":
operand1 = Math.Add(operand1, dispString_to_numb(display.Text));
break;
case "-":
operand1 = Math.Add(operand1, -(dispString_to_numb(display.Text)));
break;
case "*":
operand1 = Math.Mul(operand1, dispString_to_numb(display.Text));
break;
case "/":
operand1 = Math.Div(operand1, dispString_to_numb(display.Text));
break;
case "power":
operand1 = Math.Pow(operand1, dispString_to_numb(display.Text));
break;
case "root":
operand1 = Math.Root(operand1, dispString_to_numb(display.Text));
break;
case "log":
operand1 = Math.Log(dispString_to_numb(display.Text), operand1);
break;
default:
break;
}
}
public void AddTest()
{
Assert.AreEqual(0, math.Add(0, 0));
Assert.AreEqual(20, math.Add(5, 15));
Assert.AreEqual(-12, math.Add(60, -72));
Assert.AreEqual(-10, math.Add(-6, -4));
Assert.AreEqual(48, math.Add(50, -2));
Assert.AreEqual(-4000000, math.Add(-7000000, 3000000));
Assert.AreEqual(128, math.Add(-128, 256));
Assert.AreEqual(4.2, math.Add(6, -1.8), Exactness);
Assert.AreEqual(0.5, math.Add(0.15, 0.35), Exactness);
Assert.AreEqual(10.65, math.Add(10.1, 0.55), Exactness);
Assert.AreEqual(-0.32564, math.Add(0, -0.32564), Exactness);
Assert.AreEqual(2.3256, math.Add(2, 0.3256), Exactness);
Assert.AreEqual(200000000, math.Add(100000000, 100000000));
}