code: def test_register_dwi_series_and_motion_correction():
      fdata, fbval, fbvec = dpd.get_fnames("small_64D")
      with TemporaryDirectory() as tmpdir:
          # Use an abbreviated data-set:
          img = nib.load(fdata)
          data = img.get_fdata()[..., :10]
          nib.save(
              nib.Nifti1Image(data, img.affine),
              op.join(tmpdir, "data.nii.gz"),
          )
          # Save a subset:
          bvals = np.loadtxt(fbval)
          bvecs = np.loadtxt(fbvec)
          np.savetxt(op.join(tmpdir, "bvals.txt"), bvals[:10])
          np.savetxt(op.join(tmpdir, "bvecs.txt"), bvecs[:10])
          gtab = dpg.gradient_table(
              op.join(tmpdir, "bvals.txt"), op.join(tmpdir, "bvecs.txt")
          )
          reg_img, reg_affines = register_dwi_series(
              data, gtab, img.affine
          )
          reg_img_2, reg_affines_2 = motion_correction(
              data, gtab, img.affine
          )
          npt.assert_(isinstance(reg_img, nib.Nifti1Image))
  
          npt.assert_array_equal(
              reg_img.get_fdata(), reg_img_2.get_fdata()
          )
          npt.assert_array_equal(reg_affines, reg_affines_2)
  
imports: import os.path
  import pytest
  from tempfile import TemporaryDirectory
  import numpy
  import numpy.testing
  import nibabel
  import dipy.data
  import dipy.core.gradients
  from dipy.align import syn_registration, register_series, register_dwi_series, center_of_mass, translation, rigid_isoscaling, rigid_scaling, rigid, affine, motion_correction, affine_registration, streamline_registration, write_mapping, read_mapping, register_dwi_to_template
  from dipy.align.imwarp import DiffeomorphicMap
  from dipy.tracking.utils import transform_tracking_output
  from dipy.io.streamline import save_trk
  from dipy.io.stateful_tractogram import StatefulTractogram, Space
  from dipy.io.gradients import read_bvals_bvecs
  from dipy.io.image import load_nifti
  from dipy.testing.decorators import set_random_number_generator
label_desc: Use image node_id 7 for calling a global function with example usage: test_register_dwi_series_and_motion_correction() without return types