public void AddOperation_Calculate_Success()
{
var operation = new AddOperation();
var input = new OperationInput <int>()
{
Num1 = 1, Num2 = 3
};
var output = operation.Do(input);
Assert.IsNotNull(output);
Assert.IsInstanceOfType(output, typeof(OperationOutput <int>));
Assert.AreEqual(((OperationOutput <int>)output).Result, 4);
}