def test_group_with_nonexistent_sibling(self):

        action_sets = [
            ActionSet(
                groups = [
                    Group(id='FileMenuGroup', path='MenuBar', before='Bogus')
                ]
            )
        ]

        # Create a builder containing the action set.
        builder = DummyActionManagerBuilder(action_sets=action_sets)

        # Create a menu bar manager for the 'MenuBar'.
        self.failUnlessRaises(
            ValueError, builder.create_menu_bar_manager, 'MenuBar'
        )

        return
group with non-existent sibling
dataset/ETHPy150Open enthought/envisage/envisage/ui/action/tests/action_manager_builder_test_case.py/ActionManagerBuilderTestCase.test_group_with_nonexistent_sibling