def test_toggle_visibility():
"""
Test toggling layer visibility
"""
layers = LayerList()
layer_a = Image(np.random.random((10, 10)))
layer_b = Image(np.random.random((15, 15)))
layer_c = Image(np.random.random((15, 15)))
layer_d = Image(np.random.random((15, 15)))
layers.append(layer_a)
layers.append(layer_b)
layers.append(layer_c)
layers.append(layer_d)
layers[0].visible = False
layers[1].visible = True
layers[2].visible = False
layers[3].visible = True
layers.select_all()
layers[0].selected = False
layers.toggle_selected_visibility()
assert [lay.visible for lay in layers] == [False, False, True, False]
layers.toggle_selected_visibility()
assert [lay.visible for lay in layers] == [False, True, False, True]
def test_remove_selected():
"""Test removing selected layers."""
layers = LayerList()
layer_a = Image(np.random.random((10, 10)))
layer_b = Image(np.random.random((15, 15)))
layer_c = Image(np.random.random((15, 15)))
layers.append(layer_a)
layers.append(layer_b)
layers.append(layer_c)
# remove last added layer as only one selected
layers.selection.clear()
layers.selection.add(layer_c)
layers.remove_selected()
assert list(layers) == [layer_a, layer_b]
# select and remove all layersay
layers.select_all()
layers.remove_selected()
assert len(layers) == 0
