docstr: Tests that tile_zonal_coefficients produces the expected results.
docstr_tok: ["Tests","that","tile_zonal_coefficients","produces","the","expected","results","."]
code: def test_tile_zonal_coefficients_preset(self):
      """Tests that tile_zonal_coefficients produces the expected results."""
      self.assertAllEqual(
          spherical_harmonics.tile_zonal_coefficients((0, 1, 2)),
          (0, 1, 1, 1, 2, 2, 2, 2, 2),
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import sys
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_graphics.math import math_helpers
  from tensorflow_graphics.math import spherical_harmonics
  from tensorflow_graphics.util import asserts
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 27 for calling the SphericalHarmonicsTest obj's underlying member method code with example usage: obj.test_tile_zonal_coefficients_preset() without return types