def test_reordering_layers(qtbot):
"""
Test reordering layers.
"""
layers = LayerList()
view = QtLayerList(layers)
qtbot.addWidget(view)
layer_a = Image(np.random.random((10, 10)), name='image_a')
layer_b = Image(np.random.random((15, 15)), name='image_b')
layer_c = Image(np.random.random((15, 15)), name='image_c')
layer_d = Image(np.random.random((15, 15)), name='image_d')
layers.append(layer_a)
layers.append(layer_b)
layers.append(layer_c)
layers.append(layer_d)
# Check layout and layers list match after rearranging layers
layers[:] = [layers[i] for i in (1, 0, 3, 2)]
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Do another reorder and check layout and layers list match
# after swapping layers again
layers[:] = [layers[i] for i in (1, 0, 3, 2)]
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Check layout and layers list match after reversing list
layers.reverse()
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
# Check layout and layers list match after rearranging selected layers
layer_e = Image(np.random.random((15, 15)))
layer_f = Image(np.random.random((15, 15)))
layers.append(layer_e)
layers.append(layer_f)
for layer, s in zip(layers, [False, True, False, False, True, False]):
layer.selected = s
layers.move_selected(1, 2)
assert view.vbox_layout.count() == 2 * (len(layers) + 1)
assert check_layout_layers(view.vbox_layout, layers)
assert check_layout_dividers(view.vbox_layout, len(layers))
def test_reordering():
"""
Test indexing into a LayerList by name
"""
layers = LayerList()
layer_a = Image(np.random.random((10, 10)), name='image_a')
layer_b = Image(np.random.random((15, 15)), name='image_b')
layer_c = Image(np.random.random((15, 15)), name='image_c')
layers.append(layer_a)
layers.append(layer_b)
layers.append(layer_c)
# Rearrange layers by tuple
layers[:] = [layers[i] for i in (1, 0, 2)]
assert list(layers) == [layer_b, layer_a, layer_c]
# Reverse layers
layers.reverse()
assert list(layers) == [layer_c, layer_a, layer_b]