new_contents: # Copyright 2017 Artem Artemev @awav
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  
  import unittest
  import tensorflow as tf
  import contextlib
  
  
  class GPflowTestCase(tf.test.TestCase):
      """
      Wrapper for TestCase to avoid massive duplication of resetting
      Tensorflow Graph.
      """
  
      _multiprocess_can_split_ = True
  
      @contextlib.contextmanager
      def test_context(self):
          with self.test_session(graph=tf.Graph()) as session:
              yield session
  
      def tearDown(self):
          tf.reset_default_graph()
          super(GPflowTestCase, self).tearDown()
  
subject: Add test util.