public void Peek_PushTwoItems_ReturnsHeadItem() { var stack = new NodeStack <int>(); stack.Push(1); stack.Push(2); Assert.AreEqual(2, stack.Peek()); }
public void Peek_PushTwoItemAndPop_ReturnsHeadElement() { var stack = new NodeStack <int>(); stack.Push(1); stack.Push(2); stack.Pop(); Assert.AreEqual(1, stack.Peek()); }