def test_layer_action_menu(qapp):
"""Test the actions in LAYER_ACTIONS."""
menu = QtActionContextMenu(_LAYER_ACTIONS)
layer_list = LayerList([])
menu.update_from_context(layer_list._ctx)
assert not menu._get_action('napari:convert_to_image').isEnabled()
layer_list.append(Labels(np.zeros((8, 8), int)))
menu.update_from_context(layer_list._ctx)
assert menu._get_action('napari:convert_to_image').isEnabled()
assert not menu._get_action('napari:convert_to_labels').isEnabled()
layer_list.append(Image(np.zeros((8, 8))))
menu.update_from_context(layer_list._ctx)
assert not menu._get_action('napari:convert_to_image').isEnabled()
assert menu._get_action('napari:convert_to_labels').isEnabled()
assert not menu._get_action('napari:link_selected_layers').isEnabled()
layer_list.select_all()
menu.update_from_context(layer_list._ctx)
assert menu._get_action('napari:link_selected_layers').isEnabled()
assert not menu._get_action('napari:unlink_selected_layers').isEnabled()
layer_list.link_layers()
menu.update_from_context(layer_list._ctx)
assert not menu._get_action('napari:link_selected_layers').isEnabled()
assert menu._get_action('napari:unlink_selected_layers').isEnabled()
def test_projections(mode):
ll = LayerList()
ll.append(Image(np.random.rand(8, 8, 8)))
assert len(ll) == 1
assert ll[-1].data.ndim == 3
_project(ll, mode=mode)
assert len(ll) == 2
# because we use keepdims = True
assert ll[-1].data.shape == (1, 8, 8)
def test_convert_layer(input, type_):
ll = LayerList()
input.scale *= 1.5
original_scale = input.scale.copy()
ll.append(input)
assert ll[0]._type_string != type_
_convert(ll, type_)
assert ll[0]._type_string == type_
assert np.array_equal(ll[0].scale, original_scale)
def test_layerlist_context():
assert 'layers_selection_count' in LayerListContextKeys.__members__
ctx = {}
llc = LayerListContextKeys(ctx)
assert llc.layers_selection_count == 0
assert ctx['layers_selection_count'] == 0
layers = LayerList()
layers.selection.events.changed.connect(llc.update)
layers.append(Points())
assert llc.layers_selection_count == 1
assert ctx['layers_selection_count'] == 1
def test_all_selected_layers_same_type():
assert 'all_selected_layers_same_type' in LayerListContextKeys.__members__
ctx = {}
LLCK = LayerListContextKeys(ctx)
assert LLCK.all_selected_layers_same_type is False
assert ctx['all_selected_layers_same_type'] is False
layer_list = LayerList()
points_layer1 = Points()
points_layer2 = Points()
image_layer = Image(np.zeros((10, 10)))
layer_list.selection.events.changed.connect(LLCK.update)
layer_list.append(points_layer1)
layer_list.append(points_layer2)
layer_list.append(image_layer)
layer_list.selection = layer_list[:2] # two points layers selected
assert LLCK.all_selected_layers_same_type is True
assert ctx['all_selected_layers_same_type'] is True
layer_list.selection = [
layer_list[0],
layer_list[2],
] # one points + one image
assert LLCK.all_selected_layers_same_type is False
assert ctx['all_selected_layers_same_type'] is False
def test_layerlist_context():
assert 'num_selected_layers' in LayerListContextKeys.__members__
ctx = {}
LLCK = LayerListContextKeys(ctx)
assert LLCK.num_selected_layers == 0
assert ctx['num_selected_layers'] == 0
layer_list = LayerList()
points_layer = Points()
layer_list.selection.events.changed.connect(LLCK.update)
layer_list.append(points_layer)
assert LLCK.num_selected_layers == 1
assert ctx['num_selected_layers'] == 1
def test_convert_dtype(mode):
ll = LayerList()
data = np.zeros((10, 10), dtype=np.int16)
ll.append(Labels(data))
assert ll[-1].data.dtype == np.int16
data[5, 5] = 1000
assert data[5, 5] == 1000
if mode == 'int8' or mode == 'uint8':
# label value 1000 is outside of the target data type range.
with pytest.raises(AssertionError):
_convert_dtype(ll, mode=mode)
assert ll[-1].data.dtype == np.int16
else:
_convert_dtype(ll, mode=mode)
assert ll[-1].data.dtype == np.dtype(mode)
assert ll[-1].data[5, 5] == 1000
assert ll[-1].data.flatten().sum() == 1000
def test_convert_layer(input, type_):
ll = LayerList()
ll.append(input)
assert ll[0]._type_string != type_
_convert(ll, type_)
assert ll[0]._type_string == type_