def test_peek_general(items: List[int]) -> None:
"""Test that peek works for a large range of stack sizes."""
stack = Stack()
for item in items:
stack.push(item)
assert peek(stack) == items[-1]
assert stack.pop() == items[-1]
def test_peek_doctest() -> None:
"""This is the doctest given in peek."""
stack = Stack()
stack.push(1)
stack.push(2)
assert peek(stack) == 2
assert stack.pop() == 2