public void SubclassesCanModifyExistingBehavior()
{
var chico = new Chihuahua("Chico");
Assert.Equal(FILL_ME_IN, chico.Bark());
//Note that even if we cast the object back to a dog
//we still get the Chihuahua's behavior. It truly
//"is-a" Chihuahua
Dog dog = chico as Dog;
Assert.Equal(FILL_ME_IN, dog.Bark());
var fido = new Dog("Fido");
Assert.Equal(FILL_ME_IN, fido.Bark());
}
public void SubclassesCanModifyExistingBehavior()
{
var chico = new Chihuahua("Chico");
Assert.Equal("yip", chico.Bark());
//Note that even if we cast the object back to a dog
//we still get the Chihuahua's behavior. It truly
//"is-a" Chihuahua
Dog dog = chico as Dog;
Assert.Equal("yip", dog.Bark());
var fido = new Dog("Fido");
Assert.Equal("WOOF", fido.Bark());
}
public void AboutInheritanceSubclassesCanModifyExistingBehavior()
{
var chico = new Chihuahua("Chico");
Assert.AreEqual(FILL_ME_IN, chico.Bark());
//Note that even if we cast the object back to a dog
//we still get the Chihuahua's behavior. It truly
//"is-a" Chihuahua
Dog dog = chico as Dog;
Assert.AreEqual(FILL_ME_IN, dog.Bark());
var fido = new Dog("Fido");
Assert.AreEqual(FILL_ME_IN, fido.Bark());
}
public void SubclassesCanModifyExistingBehavior()
{
var chico = new Chihuahua("Chico");
Assert.Equal("yip", chico.Bark());
//Note that even if we cast the object back to a dog
//we still get the Chihuahua's behavior. It truly
//"is-a" Chihuahua
/*
What happens to the original Dog class on this cast? Is it overwritten?
*/
Dog dog = chico as Dog;
// Why does chico, now as a dog, yip? It should WOOF! since it's now cast as a Dog.
Assert.Equal("yip", dog.Bark());
var fido = new Dog("Fido");
Assert.Equal("WOOF", fido.Bark());
}
public void SubclassesCanModifyExistingBehavior()
{
var chico = new Chihuahua("Chico");
//Assert.AreEqual (FILL_ME_IN, chico.Bark ());
Assert.AreEqual("bbbbbrip", chico.Bark());
// Noteu que encara que fem un cast de l'objecte cap a gos
// encara obtenim el comportament de Chihuahua's behavior.
// Ja ho diuen que tenen caràcter els petits...
Dog dog = chico as Dog;
//Assert.AreEqual(FILL_ME_IN, dog.Bark ());
Assert.AreEqual("bbbbbrip", dog.Bark());
var fido = new Dog("Fido");
//Assert.AreEqual(FILL_ME_IN, fido.Bark ());
Assert.AreEqual("BUP", fido.Bark());
}