def test_as_list_when_no_items_returns_empty_list(self):
# Arrange
queue = Queue()
# Act
result = queue.to_list()
# Assert
assert result == []
def test_as_list_when_items_returns_expected_list(self):
# Arrange
queue = Queue()
queue.put_nowait("A")
queue.put_nowait("B")
queue.put_nowait("C")
# Act
result = queue.to_list()
# Assert
assert result == ["C", "B", "A"]
assert queue.get_nowait() == "A"
assert result == ["C", "B", "A"] # <-- confirm was copy