old_contents: import unittest
  
  PLUGINAPI = [
      'show',
      'snapshot',
      'VTKParticles',
      'VTKLattice',
      'VTKMesh',
      'adapt2cuds',
      'load',
      'add_engine_to_mayavi2'
  ]
  
  
  class TestPluginLoading(unittest.TestCase):
  
      def test_import(self):
          try:
              from simphony.visualisation import mayavi_tools  # noqa
          except ImportError:
              self.fail('Could not import the mayavi visualisation')
  
      def test_function_api(self):
  
          from simphony.visualisation import mayavi_tools
  
          for item in PLUGINAPI:
              self.assertTrue(
                  hasattr(mayavi_tools, item),
                  "could not import {}".format(item))
  
new_contents: import unittest
  
  PLUGINAPI = [
      'show',
      'snapshot',
      'VTKParticles',
      'VTKLattice',
      'VTKMesh',
      'adapt2cuds',
      'load',
      'add_engine_to_mayavi2',
      'get_simphony_panel'
  ]
  
  
  class TestPluginLoading(unittest.TestCase):
  
      def test_import(self):
          try:
              from simphony.visualisation import mayavi_tools  # noqa
          except ImportError:
              self.fail('Could not import the mayavi visualisation')
  
      def test_function_api(self):
  
          from simphony.visualisation import mayavi_tools
  
          for item in PLUGINAPI:
              self.assertTrue(
                  hasattr(mayavi_tools, item),
                  "could not import {}".format(item))
  
subject: add get_simphony_panel to test_plugin_loading