public void TopAndPop()
{
ListStack myList = new ListStack();
myList.Push(123);
Assert.AreEqual(123, myList.Top());
myList.Pop();
Assert.AreEqual(true, myList.IsEmpty());
}
public void Top()
{
ListStack myList = new ListStack();
myList.Push(12);
Assert.AreEqual(12, myList.Top());
}