text: # All Rights Reserved.
  #
  #    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 mock
  
  from rally.plugins.openstack.scenarios.fuel import nodes
  from tests.unit import test
  
  
  class FuelNodesTestCase(test.TestCase):
  
      context = {"fuel": {"environments": ["1"]}}
  
      def test_add_and_remove_node(self):
          scenario = nodes.FuelNodes(self.context)
          scenario._list_node_ids = mock.Mock(return_value=["1"])
          scenario._node_is_assigned = mock.Mock(return_value=False)
          scenario._add_node = mock.Mock()
          scenario._remove_node = mock.Mock()
  
          scenario.add_and_remove_node(node_roles="some_role")
  
          scenario._list_node_ids.assert_called_once_with()
          scenario._node_is_assigned.assert_called_once_with("1")
          scenario._add_node.assert_called_once_with("1", ["1"], "some_role")
          scenario._remove_node.assert_called_once_with("1", "1")
  
      def test_add_and_remove_nodes_error(self):
          scenario = nodes.FuelNodes(self.context)
          scenario._list_node_ids = mock.Mock(return_value=["1"])
          scenario._node_is_assigned = mock.Mock(return_value=True)
          scenario._add_node = mock.Mock()
          scenario._remove_node = mock.Mock()
  
          self.assertRaises(RuntimeError,
                            scenario.add_and_remove_node,
                            node_roles="some_role")
  