def test_add_remove_dims():
"""
Tests adding and removing dimensions
"""
dims = Dims(2)
assert dims.ndim == 2
dims.ndim = 10
assert dims.ndim == 10
dims.ndim = 5
assert dims.ndim == 5
def test_order_when_changing_ndim():
"""
Test order of the dims when changing the number of dimensions.
"""
dims = Dims(4)
dims.set_point(0, 2)
dims.ndim = 5
# Test that new dims get appended to the beginning of lists
assert dims.point == [0, 2, 0, 0, 0]
dims.set_point(2, 3)
dims.ndim = 3
# Test that dims get removed from the beginning of lists
assert dims.point == [3, 0, 0]
def test_ndim():
"""
Test number of dimensions including after adding and removing dimensions.
"""
dims = Dims()
assert dims.ndim == 2
dims = Dims(ndim=4)
assert dims.ndim == 4
dims = Dims(ndim=2)
assert dims.ndim == 2
dims.ndim = 10
assert dims.ndim == 10
dims.ndim = 5
assert dims.ndim == 5
def test_order_when_changing_ndim():
"""
Test order of the dims when changing the number of dimensions.
"""
dims = Dims(4)
dims.set_point(0, 2)
dims.ndim = 5
# Test that new dims get appended to the beginning of lists
assert dims.point == [0, 2, 0, 0, 0]
assert dims.order == [0, 1, 2, 3, 4]
assert dims.axis_labels == ['0', '1', '2', '3', '4']
dims.set_point(2, 3)
dims.ndim = 3
# Test that dims get removed from the beginning of lists
assert dims.point == [3, 0, 0]
assert dims.order == [0, 1, 2]
assert dims.axis_labels == ['2', '3', '4']
def test_order_when_changing_ndim():
"""
Test order of the dims when changing the number of dimensions.
"""
dims = Dims(ndim=4)
dims.set_range(0, (0, 4, 1))
dims.set_point(0, 2)
dims.ndim = 5
# Test that new dims get appended to the beginning of lists
assert dims.point == (0, 2, 0, 0, 0)
assert dims.order == (0, 1, 2, 3, 4)
assert dims.axis_labels == ('0', '1', '2', '3', '4')
dims.set_range(2, (0, 4, 1))
dims.set_point(2, 3)
dims.ndim = 3
# Test that dims get removed from the beginning of lists
assert dims.point == (3, 0, 0)
assert dims.order == (0, 1, 2)
assert dims.axis_labels == ('2', '3', '4')
def test_set_axis_labels_after_ndim_changes(qtbot):
"""See https://github.com/napari/napari/issues/3753"""
dims = Dims(ndim=3, ndisplay=2)
view = QtDims(dims)
qtbot.addWidget(view)
dims.ndim = 2
dims.axis_labels = ['y', 'x']
assert len(view.slider_widgets) == 2
assert view.slider_widgets[0].axis_label.text() == 'y'
assert view.slider_widgets[1].axis_label.text() == 'x'
def test_changing_focus():
"""Test changing focus updates the last_used prop."""
# too-few dims, should have no sliders to update
dims = Dims(ndim=2)
assert dims.last_used == 0
dims._focus_down()
dims._focus_up()
assert dims.last_used == 0
dims.ndim = 5
# Note that with no view attached last used remains
# None even though new non-displayed dimensions added
assert dims.last_used == 0
dims._focus_down()
assert dims.last_used == 2
dims._focus_down()
assert dims.last_used == 1
dims._focus_up()
assert dims.last_used == 2
dims._focus_up()
assert dims.last_used == 0
dims._focus_down()
assert dims.last_used == 2
def test_labels_order_when_changing_dims():
dims = Dims(ndim=4)
dims.ndim = 5
assert dims.axis_labels == ('0', '1', '2', '3', '4')
