code: def test_real_sh_descoteaux1():
      # This test should do for now
      # The tournier07 basis should be the same as re-ordering and re-scaling the
      # descoteaux07 basis
      new_order = [0, 5, 4, 3, 2, 1, 14, 13, 12, 11, 10, 9, 8, 7, 6]
      sphere = hemi_icosahedron.subdivide(2)
  
      with warnings.catch_warnings():
          warnings.filterwarnings("ignore")
          basis, m, n = real_sym_sh_mrtrix(4, sphere.theta, sphere.phi)
  
      expected = basis[:, new_order]
      expected *= np.where(m == 0, 1.0, np.sqrt(2))
  
      with warnings.catch_warnings(record=True) as w:
          descoteaux07_basis, m, n = real_sh_descoteaux(
              4, sphere.theta, sphere.phi
          )
  
      npt.assert_equal(len(w), 1)
      npt.assert_(issubclass(w[0].category, PendingDeprecationWarning))
      npt.assert_(descoteaux07_legacy_msg in str(w[0].message))
  
      assert_array_almost_equal(descoteaux07_basis, expected)
  
imports: import warnings
  import numpy
  import numpy.linalg
  import numpy.testing
  from dipy.testing import assert_true
  from numpy.testing import assert_array_equal, assert_array_almost_equal, assert_equal, assert_raises
  from scipy.special import sph_harm
  from dipy.core.sphere import hemi_icosahedron, Sphere
  from dipy.core.gradients import gradient_table
  from dipy.core.interpolation import NearestNeighborInterpolator
  from dipy.sims.voxel import single_tensor
  from dipy.direction.peaks import peak_directions
  from dipy.reconst.shm import sf_to_sh, sh_to_sf
  from dipy.sims.voxel import multi_tensor_odf
  from dipy.data import mrtrix_spherical_functions
  from dipy.reconst import odf
  from dipy.reconst.shm import real_sh_descoteaux_from_index, real_sym_sh_basis, real_sym_sh_mrtrix, real_sh_descoteaux, real_sh_tournier, sph_harm_ind_list, order_from_ncoef, OpdtModel, normalize_data, hat, lcr_matrix, smooth_pinv, bootstrap_data_array, bootstrap_data_voxel, ResidualBootstrapWrapper, CsaOdfModel, QballModel, SphHarmFit, spherical_harmonics, anisotropic_power, calculate_max_order, sh_to_sf_matrix, gen_dirac, convert_sh_to_full_basis, convert_sh_from_legacy, convert_sh_to_legacy, convert_sh_descoteaux_tournier, descoteaux07_legacy_msg, tournier07_legacy_msg
label_desc: Use image node_id 7 for calling a global function with example usage: test_real_sh_descoteaux1() without return types