public void Test_PigDaliy()
{
// given
var expected = new Pig();
// when
var result = new HigherLayer("PIG").GetAnimal();
// then
Assert.AreEqual(expected.GetType(), result.GetType());
}
protected override void OnAddToStageComplete()
{
base.OnAddToStageComplete();
contactTypes.Add(pig.GetType(), OnPigContact);
}