code: def test_predict(self):
      y_predicted = self.art_model.predict(self.x_test_diabetes[:4])
      y_expected = np.asarray([[24.9], [52.7], [30.4], [68.1]])
      np.testing.assert_array_almost_equal(
          y_predicted, y_expected, decimal=1
      )
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import logging
  import unittest
  import numpy
  from art.estimators.regression.keras import KerasRegressor
  from tests.utils import TestBase, master_seed, get_tabular_regressor_kr
label_desc: Use image node_id 3 for calling the TestKerasRegressor obj's underlying member method code with example usage: obj.test_predict() without return types