public void AddPet_Should_Include_List_Count_By1()
        {
            int petCount = myShelter.allPetsList.Count;
            Pet newPet   = new Pet("second pet");

            myShelter.AddPet(newPet);
            int newPetCount = myShelter.allPetsList.Count;
        }
        public void AddPet_Should_Increase_List_Count_To_1()
        {
            Pet newPet = new Pet();

            sut.AddPet(newPet);

            Assert.Single(sut.PetShelterList);
        }