public void _02_Creer_une_classe_SumCommand_avec_une_methode_Do_et_Undo()
{
Calculator calculator = new Calculator();
SumCommand sum = new SumCommand(calculator, 10);
Assert.Equal(0, calculator.Result);
sum.Do();
Assert.Equal(10, calculator.Result);
sum.Undo();
Assert.Equal(0, calculator.Result);
}
public void _03_Creer_une_classe_MultiplyCommand_avec_une_methode_Do_et_Undo()
{
Calculator calculator = new Calculator();
SumCommand sum = new SumCommand(calculator, 5);
MultiplyCommand multiply = new MultiplyCommand(calculator, 10);
Assert.Equal(0, calculator.Result);
sum.Do();
Assert.Equal(5, calculator.Result);
multiply.Do();
Assert.Equal(50, calculator.Result);
multiply.Undo();
Assert.Equal(5, calculator.Result);
}