code: def test_load_surf_mesh_file_gii_gz():
      # Test the loader `load_surf_mesh` with gzipped fsaverage5 files
  
      fsaverage = datasets.fetch_surf_fsaverage().pial_left
      coords, faces = load_surf_mesh(fsaverage)
      assert isinstance(coords, np.ndarray)
      assert isinstance(faces, np.ndarray)
  
imports: import os
  import tempfile
  import warnings
  import nibabel
  import numpy
  import pytest
  from nibabel import gifti
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  from scipy.spatial import Delaunay
  from scipy.stats import pearsonr
  from nilearn import datasets, image
  from nilearn._utils import data_gen
  from nilearn.image import resampling
  from nilearn.surface import Mesh, Surface, load_surf_data, load_surf_mesh, surface
  from nilearn.surface.surface import _gifti_img_to_mesh, _load_surf_files_gifti_gzip
  from nilearn.surface.tests._testing import flat_mesh, generate_surf, z_const_img
label_desc: Use image node_id 11 for calling a global function with example usage: test_load_surf_mesh_file_gii_gz() without return types