'Test if it possible to handle case when split_test has no parent.'

def test_can_handle_without_parent(self):

    self._add_user_partitions()
    with modulestore().branch_setting(ModuleStoreEnum.Branch.published_only):
        orphan = modulestore().create_item(ModuleStoreEnum.UserID.test, self.course.id, 'split_test')
        orphan.user_partition_id = 0
        orphan.display_name = 'Test    Content    Experiment'
        modulestore().update_item(orphan, ModuleStoreEnum.UserID.test)
    self.save_course()
    actual = GroupConfiguration.get_content_experiment_usage_info(self.store, self.course)
    self.assertEqual(actual, {0: []})
