class_docstr: Unit tests for the additive kernel. 
docstr: Test for the Marginal likelihood of an additive GP. 
docstr_tok: ["Test","for","the","Marginal","likelihood","of","an","additive","GP","."]
code: def test_matern_prediction(self):
      """Test for the Marginal likelihood of an additive GP."""
      self.report(
          "Marginal Likelihoods for non-additive vs additive Matern GP."
          + " Probabilistic test, might fail."
      )
      self._prediction_test(
          fit_matern_gp_with_dataset,
          fit_add_matern_gp_with_dataset,
          "non-additive",
          "additive",
      )
  
imports: from __future__ import division
  import unittest
  import numpy
  from .euclidean_gp import EuclideanGP, EuclideanGPFitter, euclidean_gp_args
  from .unittest_gp_core import compute_average_prediction_error
  from .unittest_gp_core import gen_gp_test_data
  from ..utils.base_test_class import BaseTestClass, execute_tests
  from ..utils.option_handler import load_options
label_desc: Use image node_id 5 for calling the AdditiveGPFitterTestCase obj's underlying member method code with example usage: obj.test_matern_prediction() without return types