code: def test_vertices_regions_scaling_invariance(self):
      sv_unit = SphericalVoronoi(self.points)
      sv_scaled = SphericalVoronoi(self.points * 2, 2)
      assert_equal(sv_unit.regions, sv_scaled.regions)
      assert_array_almost_equal(
          sv_unit.vertices * 2, sv_scaled.vertices
      )
  
imports: import numpy
  import itertools
  from numpy.testing import assert_equal, assert_almost_equal, assert_array_equal, assert_array_almost_equal
  import pytest
  from pytest import raises
  from scipy.spatial import SphericalVoronoi, distance
  from scipy.optimize import linear_sum_assignment
  from scipy.constants import golden
  from scipy.special import gamma
label_desc: Use image node_id 4 for calling the TestSphericalVoronoi obj's underlying member method code with example usage: obj.test_vertices_regions_scaling_invariance() without return types