public void CanAddData()
        {
            Stack <int> stack = new LinearDataStructures.Stack <int>();

            stack.Push(7);

            Assert.IsTrue(stack.Count == 1);
            Assert.AreEqual(7, stack.Peek());
        }
        public void CanClearStack()
        {
            Stack <int> stack = new LinearDataStructures.Stack <int>();

            stack.Push(7);
            stack.Push(77);

            Assert.IsTrue(stack.Count == 2);

            stack.Clear();

            // Default value of int
            Assert.IsTrue(stack.Peek() == 0);
        }