def test_stack_is_empty(test_stack):
embty_stack = Stack()
assert embty_stack.isEmpty() == True
assert test_stack.isEmpty() == False
def test_is_empty():
s = Stack()
actual = s.isEmpty()
expected = True
assert actual == expected
def test_queue_is_empty(test_queue):
assert test_queue.isEmpty() == False
test_queue = Stack()
assert test_queue.isEmpty() == True