code: def test_mne_analyze_colormap():
      """Test mne_analyze_colormap."""
      pytest.raises(ValueError, mne_analyze_colormap, [0])
      pytest.raises(ValueError, mne_analyze_colormap, [-1, 1, 2])
      pytest.raises(ValueError, mne_analyze_colormap, [0, 2, 1])
  
imports: from pathlib import Path
  import matplotlib.pyplot
  import numpy
  import pytest
  from numpy.testing import assert_allclose
  from mne import read_evokeds
  from mne.epochs import Epochs
  from mne.event import read_events
  from mne.io import read_raw_fif
  from mne.viz import ClickableImage, add_background_image, mne_analyze_colormap
  from mne.viz.ui_events import ColormapRange, link, subscribe
  from mne.viz.utils import _compute_scalings, _fake_click, _fake_keypress, _fake_scroll, _get_color_list, _make_event_color_dict, _setup_vmin_vmax, _validate_if_list_of_axes, centers_to_edges, compare_fiff, concatenate_images
label_desc: Use image node_id 3 for calling a global function with example usage: test_mne_analyze_colormap() without return types