public void TestDemo2Itf()
{
ICalc calc = new Calculator();
Assert.AreEqual(30, calc.Add(10, 20));
}
public void TestDemo2Dynamic()
{
dynamic calc = new Calculator();
Assert.AreEqual(30, calc.Add(10, 20));
}
public void TestDemo2Static()
{
Calculator calc = new Calculator();
Assert.AreEqual(30, calc.Add(10, 20));
}