public void TestAdd()
{
SimpleCalc calc = new SimpleCalc();
double result = calc.Add(2, 3);
Assert.AreEqual(6, result); //intentionally wrong 1st
}
public void TestDivide()
{
SimpleCalc calc = new SimpleCalc();
double result = calc.Divide(100, 2);
Assert.AreEqual(50, result); //correct, but make wrong inside class
}