def test_callback_list_nocallbacks(): # CHeck that things work properly without callbacks l = CallbackList([1, 2, 3]) l.append(2) l.append(6) l.pop(3) l.remove(1) l.insert(0, 9) l.extend([4, 5, 4]) l[2] = 9 del l[1] assert l == [9, 9, 6, 4, 5, 4]
def test_callback_list(): class Callbacks(object): def __init__(self): self.sizes = [] self.indices = [] def on_size_change(self, list_instance): self.sizes.append(len(list_instance)) def on_item_change(self, list_instance, index): self.indices.append(index) callbacks = Callbacks() # CHeck that things work properly without callbacks l = CallbackList([1, 2, 3]) # Register callbacks l.on_size_change = callbacks.on_size_change l.on_item_change = callbacks.on_item_change l.append(2) l.append(6) l.pop(3) l.remove(1) l.insert(0, 9) l.extend([4, 5, 4]) l[2] = 9 del l[1] assert l == [9, 9, 6, 4, 5, 4] assert callbacks.sizes == [4, 5, 4, 3, 4, 7, 6] assert callbacks.indices == [2]