docstr: Tests that the shape exceptions are not raised.
docstr_tok: ["Tests","that","the","shape","exceptions","are","not","raised","."]
code: def test_random_rays_exception_exception_not_raised(
      self, num_frequencies, *shapes
  ):
      """Tests that the shape exceptions are not raised."""
      self.assert_exception_is_not_raised(
          feature_representation.positional_encoding,
          shapes,
          num_frequencies=num_frequencies,
      )
  
imports: from absl.testing import parameterized
  from tensorflow_graphics.math import feature_representation
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 1 for calling the FeatureRepresentationTest obj's underlying member method code with example usage: obj.test_random_rays_exception_exception_not_raised(num_frequencies) without return types