// Calculation initialize object handler - Runs the calculation and displays the result
private void Calculate_Click(object sender, RoutedEventArgs e)
{
double num1 = double.Parse(x);
double num2 = double.Parse(y);
double output = 0;
try
{
switch (symbol)
{
case ('+'):
output = CalculatorMethods.Add(num1, num2);
break;
case ('-'):
output = CalculatorMethods.Subtract(num1, num2);
break;
case ('/'):
output = CalculatorMethods.Quotient(num1, num2);
break;
case ('x'):
output = CalculatorMethods.Product(num1, num2);
break;
default:
x = "";
break;
}
displayBox.Text = output.ToString();
x = output.ToString();
y = "";
}
catch (DivideByZeroException ex)
{
displayBox.Text = ex.Message;
x = "";
y = "";
}
}
public void divideByZeroExceptionTest(int x, int y)
{
var ex = Assert.Throws <DivideByZeroException>(() => CalculatorMethods.Quotient(x, y));
Assert.AreEqual("Error", ex.Message);
}
public void QuotientTest(double a, double b, double expected)
{
var result = CalculatorMethods.Quotient(a, b);
Assert.AreEqual(expected, result);
}