def test_edge_color():
"""Test setting edge color."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.edge_color == 'red'
layer.edge_color = 'blue'
assert layer.edge_color == 'blue'
layer = Vectors(data, edge_color='green')
assert layer.edge_color == 'green'
def test_length():
"""Test setting length."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.length == 1
layer.length = 2
assert layer.length == 2
layer = Vectors(data, length=3)
assert layer.length == 3
def test_edge_width():
"""Test setting edge width."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.edge_width == 1
layer.edge_width = 2
assert layer.edge_width == 2
layer = Vectors(data, edge_width=3)
assert layer.edge_width == 3
def test_name():
"""Test setting layer name."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.name == 'Vectors'
layer = Vectors(data, name='random')
assert layer.name == 'random'
layer.name = 'vcts'
assert layer.name == 'vcts'
def test_visiblity():
"""Test setting layer visibility."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.visible is True
layer.visible = False
assert layer.visible is False
layer = Vectors(data, visible=False)
assert layer.visible is False
layer.visible = True
assert layer.visible is True
def test_edge_color_colormap():
"""Test creating Vectors where edge color is set by a colormap"""
shape = (10, 2)
shape = (10, 2, 2)
data = np.random.random(shape)
data[:, 0, :] = 20 * data[:, 0, :]
properties = {'angle': np.array([0, 1.5] * int(shape[0] / 2))}
layer = Vectors(
data,
properties=properties,
edge_color='angle',
edge_colormap='gray',
)
np.testing.assert_equal(layer.properties, properties)
assert layer.edge_color_mode == 'colormap'
edge_color_array = transform_color(['black', 'white'] * int(shape[0] / 2))
assert np.all(layer.edge_color == edge_color_array)
# change the color cycle - edge_color should not change
layer.edge_color_cycle = ['red', 'blue']
assert np.all(layer.edge_color == edge_color_array)
# adjust the clims
layer.edge_contrast_limits = (0, 3)
layer.refresh_colors(update_color_mapping=False)
np.testing.assert_allclose(layer.edge_color[-1], [0.5, 0.5, 0.5, 1])
# change the colormap
new_colormap = 'viridis'
layer.edge_colormap = new_colormap
assert layer.edge_colormap.name == new_colormap
# test adding a colormap with a vispy Colormap object
layer.edge_colormap = get_colormap('gray')
assert 'unnamed colormap' in layer.edge_colormap.name
def test_opacity():
"""Test setting layer opacity."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.opacity == 0.7
layer.opacity = 0.5
assert layer.opacity == 0.5
layer = Vectors(data, opacity=0.6)
assert layer.opacity == 0.6
layer.opacity = 0.3
assert layer.opacity == 0.3
def test_blending():
"""Test setting layer blending."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.blending == 'translucent'
layer.blending = 'additive'
assert layer.blending == 'additive'
layer = Vectors(data, blending='additive')
assert layer.blending == 'additive'
layer.blending = 'opaque'
assert layer.blending == 'opaque'
def test_edge_color_direct():
"""Test setting edge color."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
np.testing.assert_allclose(
layer.edge_color, np.repeat([[1, 0, 0, 1]], data.shape[0], axis=0)
)
# set edge color as an RGB array
layer.edge_color = [0, 0, 1]
np.testing.assert_allclose(
layer.edge_color, np.repeat([[0, 0, 1, 1]], data.shape[0], axis=0)
)
# set edge color as an RGBA array
layer.edge_color = [0, 1, 0, 0.5]
np.testing.assert_allclose(
layer.edge_color, np.repeat([[0, 1, 0, 0.5]], data.shape[0], axis=0)
)
# set all edge colors directly
edge_colors = np.random.random((data.shape[0], 4))
layer.edge_color = edge_colors
np.testing.assert_allclose(layer.edge_color, edge_colors)
def test_adding_properties():
"""test adding properties to a Vectors layer"""
shape = (10, 2)
np.random.seed(0)
shape = (10, 2, 2)
data = np.random.random(shape)
data[:, 0, :] = 20 * data[:, 0, :]
properties = {'vector_type': np.array(['A', 'B'] * int(shape[0] / 2))}
layer = Vectors(data)
# properties should start empty
assert layer.properties == {}
# add properties
layer.properties = properties
np.testing.assert_equal(layer.properties, properties)
# removing a property that was the _edge_color_property should give a warning
layer._edge_color_property = 'vector_type'
properties_2 = {
'not_vector_type': np.array(['A', 'B'] * int(shape[0] / 2))
}
with pytest.warns(UserWarning):
layer.properties = properties_2
# adding properties with the wrong length should raise an exception
bad_properties = {'vector_type': np.array(['A'])}
with pytest.raises(ValueError):
layer.properties = bad_properties
def test_edge_color_map_non_numeric_property():
"""Test setting edge_color as a color map of a
non-numeric property raises an error
"""
np.random.seed(0)
shape = (10, 2, 2)
data = np.random.random(shape)
data[:, 0, :] = 20 * data[:, 0, :]
properties = {'vector_type': np.array(['A', 'B'] * int((shape[0] / 2)))}
color_cycle = ['red', 'blue']
initial_color = [0, 1, 0, 1]
layer = Vectors(
data,
properties=properties,
edge_color=initial_color,
edge_color_cycle=color_cycle,
edge_colormap='gray',
)
# layer should start out in direct edge color mode with all green vectors
assert layer.edge_color_mode == 'direct'
np.testing.assert_allclose(layer.edge_color,
np.repeat([initial_color], shape[0], axis=0))
# switching to colormap mode should raise an error because the 'vector_type' is non-numeric
layer.edge_color = 'vector_type'
with pytest.raises(TypeError):
layer.edge_color_mode = 'colormap'
def test_value():
"""Test getting the value of the data at the current coordinates."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
value = layer.get_value((0, ) * 2)
assert value is None
def test_message():
"""Test converting value and coords to message."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
msg = layer.get_message()
assert type(msg) == str
def test_random_vectors_image():
"""Test instantiating Vectors layer with random image-like 2D data."""
shape = (20, 10, 2)
np.random.seed(0)
data = np.random.random(shape)
layer = Vectors(data)
assert layer.data.shape == (20 * 10, 2, 2)
assert layer.ndim == 2
assert layer._view_data.shape[2] == 2
def test_random_3D_vectors_image():
"""Test instantiating Vectors layer with random image-like 3D data."""
shape = (12, 20, 10, 3)
np.random.seed(0)
data = np.random.random(shape)
layer = Vectors(data)
assert layer.data.shape == (12 * 20 * 10, 2, 3)
assert layer.ndim == 3
assert layer._data_view.shape[2] == 2
def test_empty_vectors():
"""Test instantiating Vectors layer with empty coordinate-like 2D data."""
shape = (0, 2, 2)
data = np.empty(shape)
layer = Vectors(data)
assert np.all(layer.data == data)
assert layer.data.shape == shape
assert layer.ndim == shape[2]
assert layer._view_data.shape[2] == 2
def test_world_data_extent():
"""Test extent after applying transforms."""
# data input format is start position, then length.
data = [[(7, -5, -3), (1, -1, 2)], [(0, 0, 0), (4, 30, 12)]]
min_val = (0, -6, -3)
max_val = (8, 30, 12)
layer = Vectors(np.array(data))
extent = np.array((min_val, max_val))
check_layer_world_data_extent(layer, extent, (3, 1, 1), (10, 20, 5))
def test_xml_list():
"""Test the xml generation."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
xml = layer.to_xml_list()
assert type(xml) == list
assert len(xml) == 10
assert np.all([type(x) == Element for x in xml])
def test_invalid_edge_color():
"""Test providing an invalid edge color raises an exception"""
np.random.seed(0)
shape = (10, 2, 2)
data = np.random.random(shape)
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
with pytest.raises(ValueError):
layer.edge_color = 5
def test_empty_vectors_with_properties():
"""Test instantiating Vectors layer with empty coordinate-like 2D data."""
shape = (0, 2, 2)
data = np.empty(shape)
properties = {'angle': np.array([0.5], dtype=np.float)}
layer = Vectors(data, properties=properties)
assert np.all(layer.data == data)
assert layer.data.shape == shape
assert layer.ndim == shape[2]
assert layer._view_data.shape[2] == 2
np.testing.assert_equal(layer._property_choices, properties)
def test_thumbnail():
"""Test the image thumbnail for square data."""
np.random.seed(0)
data = np.random.random((10, 2, 2))
data[:, 0, :] = 18 * data[:, 0, :] + 1
data[0, :, :] = [0, 0]
data[-1, 0, :] = [20, 20]
data[-1, 1, :] = [0, 0]
layer = Vectors(data)
layer._update_thumbnail()
assert layer.thumbnail.shape == layer._thumbnail_shape
def test_random_vectors():
"""Test instantiating Vectors layer with random coordinate-like 2D data."""
shape = (10, 2, 2)
np.random.seed(0)
data = np.random.random(shape)
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert np.all(layer.data == data)
assert layer.data.shape == shape
assert layer.ndim == shape[2]
assert layer._view_data.shape[2] == 2
def layer_data_and_types():
np.random.seed(0)
layers = [
Image(np.random.rand(20, 20)),
Labels(np.random.randint(10, size=(20, 2))),
Points(np.random.rand(20, 2)),
Shapes(np.random.rand(10, 2, 2)),
Vectors(np.random.rand(10, 2, 2)),
]
layer_data = [l.as_layer_data_tuple() for l in layers]
layer_types = [ld[2] for ld in layer_data]
return layer_data, layer_types
def test_big_thumbail():
"""Test the image thumbnail with n_vectors > _max_vectors_thumbnail"""
np.random.seed(0)
n_vectors = int(1.5 * Vectors._max_vectors_thumbnail)
data = np.random.random((n_vectors, 2, 2))
data[:, 0, :] = 18 * data[:, 0, :] + 1
data[0, :, :] = [0, 0]
data[-1, 0, :] = [20, 20]
data[-1, 1, :] = [0, 0]
layer = Vectors(data)
layer._update_thumbnail()
assert layer.thumbnail.shape == layer._thumbnail_shape
def test_value_3d(position, view_direction, dims_displayed, world):
"""Currently get_value should return None in 3D"""
np.random.seed(0)
data = np.random.random((10, 2, 3))
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
layer._slice_dims([0, 0, 0], ndisplay=3)
value = layer.get_value(
position,
view_direction=view_direction,
dims_displayed=dims_displayed,
world=world,
)
assert value is None
def test_changing_data():
"""Test changing Vectors data."""
shape_a = (10, 2, 2)
np.random.seed(0)
data_a = np.random.random(shape_a)
data_a[:, 0, :] = 20 * data_a[:, 0, :]
shape_b = (16, 2, 2)
data_b = np.random.random(shape_b)
data_b[:, 0, :] = 20 * data_b[:, 0, :]
layer = Vectors(data_b)
layer.data = data_b
assert np.all(layer.data == data_b)
assert layer.data.shape == shape_b
assert layer.ndim == shape_b[2]
assert layer._view_data.shape[2] == 2
def test_out_of_slice_display():
"""Test setting out_of_slice_display flag for 2D and 4D data."""
shape = (10, 2, 2)
np.random.seed(0)
data = 20 * np.random.random(shape)
layer = Vectors(data)
assert layer.out_of_slice_display is False
layer.out_of_slice_display = True
assert layer.out_of_slice_display is True
layer = Vectors(data, out_of_slice_display=True)
assert layer.out_of_slice_display is True
shape = (10, 2, 4)
data = 20 * np.random.random(shape)
layer = Vectors(data)
assert layer.out_of_slice_display is False
layer.out_of_slice_display = True
assert layer.out_of_slice_display is True
layer = Vectors(data, out_of_slice_display=True)
assert layer.out_of_slice_display is True
def test_empty_layer_with_edge_color_cycle():
""" Test creating an empty layer where the edge color is a color cycle
"""
shape = (0, 2, 2)
data = np.empty(shape)
default_properties = {'vector_type': np.array(['A'])}
layer = Vectors(
data=data, properties=default_properties, edge_color='vector_type',
)
assert layer.edge_color_mode == 'cycle'
# edge_color should remain empty when refreshing colors
layer.refresh_colors(update_color_mapping=True)
np.testing.assert_equal(layer.edge_color, np.empty((0, 4)))
def test_properties_color_mode_without_properties():
"""Test that switching to a colormode requiring
properties without properties defined raises an exceptions
"""
np.random.seed(0)
shape = (10, 2, 2)
data = np.random.random(shape)
data[:, 0, :] = 20 * data[:, 0, :]
layer = Vectors(data)
assert layer.properties == {}
with pytest.raises(ValueError):
layer.edge_color_mode = 'colormap'
with pytest.raises(ValueError):
layer.edge_color_mode = 'cycle'
def layers():
"""Fixture that supplies a layers list for testing.
Returns
-------
napari.components.LayerList
The desired napari LayerList.
"""
np.random.seed(0)
list_of_layers = [
Image(np.random.rand(20, 20)),
Labels(np.random.randint(10, size=(20, 2))),
Points(np.random.rand(20, 2)),
Shapes(np.random.rand(10, 2, 2)),
Vectors(np.random.rand(10, 2, 2)),
]
return LayerList(list_of_layers)
