def test_peek_when_no_items_returns_none(self): # Arrange queue = Queue() # Act # Assert assert queue.peek() is None
def test_peek_when_items_returns_expected_front_of_queue(self): # Arrange queue = Queue() queue.put_nowait("A") queue.put_nowait("B") queue.put_nowait("C") # Act # Assert assert queue.peek() == "A"