new_contents: # Copyright 2014 Deutsche Telekom AG
  #
  #    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 logging
  
  import mock
  import testtools
  
  from oslotest import base
  
  
  class TestBaseTestCase(testtools.TestCase):
      class FakeTestCase(base.BaseTestCase):
          def test_fake_test(self):
              pass
  
      @mock.patch('os.environ.get')
      @mock.patch.object(FakeTestCase, 'useFixture')
      @mock.patch('fixtures.Timeout')
      def test_timeout(self, fixture_timeout_mock, fixture_mock, env_get_mock):
          env_get_mock.return_value = 1
          tc = self.FakeTestCase("test_fake_test")
          tc._set_timeout()
          env_get_mock.assert_called_once_with('OS_TEST_TIMEOUT', 0)
          fixture_timeout_mock.assert_called_once_with(1, gentle=True)
          self.assertEqual(fixture_mock.call_count, 1)
  
      @mock.patch('os.environ.get')
      @mock.patch.object(FakeTestCase, 'useFixture')
      def test_fake_logs_default(self, fixture_mock, env_get_mock):
          # without debug and log capture
          env_get_mock.side_effect = lambda value: {'OS_DEBUG': 0,
                                                    'OS_LOG_CAPTURE': 0}[value]
          tc = self.FakeTestCase("test_fake_test")
          tc._fake_logs()
          env_get_mock.assert_any_call('OS_LOG_CAPTURE')
          env_get_mock.assert_any_calls('OS_DEBUG')
          self.assertEqual(fixture_mock.call_count, 0)
  
      @mock.patch('os.environ.get')
      @mock.patch('logging.basicConfig')
      def test_fake_logs_with_debug(self, basic_logger_mock, env_get_mock):
          env_get_mock.side_effect = lambda value: {'OS_DEBUG': 'True',
                                                    'OS_LOG_CAPTURE': 0}[value]
          tc = self.FakeTestCase("test_fake_test")
          tc._fake_logs()
          env_get_mock.assert_any_call('OS_LOG_CAPTURE')
          env_get_mock.assert_any_calls('OS_DEBUG')
          basic_logger_mock.assert_called_once_with(format=base._LOG_FORMAT,
                                                    level=logging.DEBUG)
  
      @mock.patch('os.environ.get')
      @mock.patch.object(FakeTestCase, 'useFixture')
      def test_fake_logs_with_log_cap(self, fixture_mock, env_get_mock):
          env_get_mock.side_effect = lambda value: {'OS_DEBUG': 0,
                                                    'OS_LOG_CAPTURE': 'True'
                                                    }[value]
          tc = self.FakeTestCase("test_fake_test")
          tc._fake_logs()
          env_get_mock.assert_any_call('OS_LOG_CAPTURE')
          env_get_mock.assert_any_calls('OS_DEBUG')
          self.assertEqual(fixture_mock.call_count, 1)
  
subject: Add unit test for olsotest base class