public class PolymorphicMapperTest {

public abstract class Animal{

    private String fooAnimal;

    public Animal(String fooAnimal) {
        this.fooAnimal = fooAnimal;
    }

    public String getFooAnimal() {
        return fooAnimal;
    }
}

public  class Cat extends Animal {

    public String fooCat;

    public Cat(String fooAnimal, String fooCat) {
        super(fooAnimal);
        this.fooCat = fooCat;
    }
}

public  class Snake extends Animal {

    public String fooSnake;

    public Snake(String fooAnimal, String fooSnake) {
        super(fooAnimal);
        this.fooSnake = fooSnake;
    }

    public String getFooSnake() {
        return fooSnake;
    }
}


public abstract class AnimalDTO{
    public String fooAnimal;
}

public  class CatDTO extends AnimalDTO {
    public String fooCat;
}

public  class SnakeDTO extends AnimalDTO {
    public String fooSnake;
}


@Test
public void testMapping() {

        Mapper mapper = MyAwesomeMapper();

        SnakeDTO snakeDTO = new SnakeDTO();
        snakeDTO.fooAnimal = "Snake";
        snakeDTO.fooSnake = "Anaconda";

        //I don't want the mapper to know the input Type because Jackson will hide it to me.
        AnimalDTO animalDTOToMap = (AnimalDTO) snakeDTO;


        Animal animal1 = mapper.map(animalDTOToMap);
        Assert.isTrue(animal1 instanceof Snake);
        //And when casted we want to find Animal and Snake fields mapped


        CatDTO catDTO = new CatDTO();
        catDTO.fooAnimal = "Cat";
        catDTO.fooCat = "Persan";

        AnimalDTO secondAnimalDTOToMap = (AnimalDTO) catDTO;

        Animal animal2 = mapper.map(secondAnimalDTOToMap);
        Assert.isTrue(animal2 instanceof Cat);
        //And when casted we want to find Animal and Cat fields mapped


}