def test_advanced_action_no_parent_tag(self):
        action = AdvancedOpenCaseAction.wrap({
            'case_type': 'spam',
            'case_tag': 'ham',
            'parent_reference_id': 'spam',
            'relationship': 'extension',
        })
        self.assertEqual(len(action.case_indices), 0)
.. todo::
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/app_manager/tests/test_extension_case.py/AdvancedOpenCaseActionMigrationTests.test_advanced_action_no_parent_tag--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/datasets/preprocessing.py/ColumnSubsetBlock.__call__