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)))
layer_d = 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.remove_selected()
assert list(layers) == [layer_a, layer_b]
# remove no layers as none selected
layers.remove_selected()
assert list(layers) == [layer_a, layer_b]
# select and remove first layer only
layers.append(layer_c)
layer_c.selected = False
layer_a.selected = True
layers.remove_selected()
assert list(layers) == [layer_b, layer_c]
# select and remove first and last layer of four
layers.append(layer_a)
layers.append(layer_d)
layer_b.selected = True
layers.remove_selected()
assert list(layers) == [layer_c, layer_a]
# select and remove middle two layers of four
layers.append(layer_b)
layers.append(layer_d)
layer_a.selected = True
layer_b.selected = True
layer_d.selected = False
layers.remove_selected()
assert list(layers) == [layer_c, layer_d]
# select and remove all layers
for l in layers:
l.selected = True
layers.remove_selected()
assert len(layers) == 0
def test_deprecated_selection():
"""Test deprecated layer selection emits warnings."""
layers = LayerList()
layer = Image(np.random.random((10, 15)))
events = []
with pytest.warns(FutureWarning):
layer.events.select.connect(lambda e: events.append(e))
layer.events.deselect.connect(lambda e: events.append(e))
layers.append(layer)
assert events[-1].type == 'select'
with pytest.warns(FutureWarning):
assert layer.selected is True
with pytest.warns(FutureWarning):
layer.selected = False
assert events[-1].type == 'deselect'
assert layer not in layers.selection
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)))
layer_d = 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.remove_selected()
assert list(layers) == [layer_a, layer_b]
# check that the next to last layer is now selected
assert [lay.selected for lay in layers] == [False, True]
layers.remove_selected()
assert list(layers) == [layer_a]
assert [lay.selected for lay in layers] == [True]
# select and remove first layer only
layers.append(layer_b)
layers.append(layer_c)
assert list(layers) == [layer_a, layer_b, layer_c]
layer_a.selected = True
layer_b.selected = False
layer_c.selected = False
layers.remove_selected()
assert list(layers) == [layer_b, layer_c]
assert [lay.selected for lay in layers] == [True, False]
# select and remove first and last layer of four
layers.append(layer_a)
layers.append(layer_d)
assert list(layers) == [layer_b, layer_c, layer_a, layer_d]
layer_a.selected = False
layer_b.selected = True
layer_c.selected = False
layer_d.selected = True
layers.remove_selected()
assert list(layers) == [layer_c, layer_a]
assert [lay.selected for lay in layers] == [True, False]
# select and remove middle two layers of four
layers.append(layer_b)
layers.append(layer_d)
layer_a.selected = True
layer_b.selected = True
layer_c.selected = False
layer_d.selected = False
layers.remove_selected()
assert list(layers) == [layer_c, layer_d]
assert [lay.selected for lay in layers] == [True, False]
# select and remove all layersay
for lay in layers:
lay.selected = True
layers.remove_selected()
assert len(layers) == 0
