public void Should_Remove_Pet() //Adopt() Method in shelter class
{
//ARRANGE
var test_shelter = new Shelter();
//ACT
test_shelter.Pet.Clear(); //Remove all items from LIST
OrganicPetClass temp_organic = new OrganicPetClass("Tom", 15, "Lion"); //add in PET LIST as organic pet
test_shelter.Pet.Add(temp_organic); // Addes in Pet List
test_shelter.Adopt(0); // Removes from Pet List
//ASSERT
Assert.Empty(test_shelter.Pet);
}