def test_changing_colormap_updates_colorbox(qtbot):
"""Test that changing the colormap on a layer will update color swatch in the combo box"""
layer = Labels(_LABELS, color=_COLOR)
qtctrl = QtLabelsControls(layer)
qtbot.addWidget(qtctrl)
color_box = qtctrl.colorBox
layer.selected_label = 1
# For a paint event, which does not occur in a headless qtbot
color_box.paintEvent(None)
np.testing.assert_equal(
color_box.color,
np.round(np.asarray(layer._selected_color) * 255 * layer.opacity),
)
layer.colormap = colormap_utils.label_colormap(num_colors=5)
# For a paint event, which does not occur in a headless qtbot
color_box.paintEvent(None)
np.testing.assert_equal(
color_box.color,
np.round(np.asarray(layer._selected_color) * 255 * layer.opacity),
)
