code: def test_plot_dipole_mri_orthoview(coord_frame, idx, show_all, title):
      """Test mpl dipole plotting."""
      pytest.importorskip("nibabel")
      dipoles = read_dipole(dip_fname)
      trans = read_trans(trans_fname)
      fig = dipoles.plot_locations(
          trans=trans,
          subject="sample",
          subjects_dir=subjects_dir,
          coord_frame=coord_frame,
          idx=idx,
          show_all=show_all,
          title=title,
          mode="orthoview",
      )
      _fake_scroll(fig, 0.5, 0.5, 1)  # scroll up
      _fake_scroll(fig, 0.5, 0.5, -1)  # scroll down
      _fake_keypress(fig, "up")
      _fake_keypress(fig, "down")
      _fake_keypress(fig, "a")  # some other key
      ax = fig.add_subplot(211)
      with pytest.raises(TypeError, match="instance of Axes3D"):
          dipoles.plot_locations(trans, "sample", subjects_dir, ax=ax)
  
imports: from pathlib import Path
  import matplotlib.pyplot
  import numpy
  import pytest
  from matplotlib.colors import Colormap
  from matplotlib.figure import Figure
  from numpy.testing import assert_allclose, assert_array_equal
  from mne import MixedSourceEstimate, SourceEstimate, convert_forward_solution, make_field_map, make_sphere_model, pick_info, pick_types, read_dipole, read_evokeds, read_forward_solution, read_trans, setup_volume_source_space, use_coil_def
  from mne._fiff._digitization import write_dig
  from mne._fiff.constants import FIFF
  from mne.bem import read_bem_solution, read_bem_surfaces
  from mne.datasets import testing
  from mne.defaults import DEFAULTS
  from mne.io import read_info, read_raw_bti, read_raw_ctf, read_raw_kit, read_raw_nirx
  from mne.minimum_norm import apply_inverse
  from mne.source_estimate import _BaseVolSourceEstimate
  from mne.source_space import read_source_spaces
  from mne.transforms import Transform
  from mne.utils import _record_warnings, catch_logging
  from mne.viz import Brain, EvokedField, Figure3D, link_brains, mne_analyze_colormap, plot_alignment, plot_brain_colorbar, plot_head_positions, plot_source_estimates, plot_sparse_source_estimates, snapshot_brain_montage
  from mne.viz._3d import _get_map_ticks, _linearize_map, _process_clim
  from mne.viz.utils import _fake_click, _fake_keypress, _fake_scroll, _get_cmap
label_desc: Use image node_id 14 for calling a global function with example usage: test_plot_dipole_mri_orthoview(coord_frame, idx, show_all, title) without return types