public void TestPersonPetStatic1()
{
IPersonX p1 = new PersonX();
IPetX t1 = new PetX();
t1.Owner = p1;
Assert.AreEqual(t1.Owner, p1);
Assert.IsTrue(p1.Pets.Contains(t1));
}
public void TestPersonDogStatic2()
{
IPersonX p1 = new PersonX();
IDogX d1 = new DogX();
p1.Pets.Add(d1);
Assert.AreEqual(d1.Owner, p1);
Assert.IsTrue(p1.Pets.Contains(d1));
}