def test_secrets(self): engine = PlumberyEngine() engine.secrets = {'hello': 'world'} engine.save_secrets(plan='test_engine.yaml') engine.secrets = {} engine.load_secrets(plan='test_engine.yaml') self.assertEqual(engine.secrets['hello'], 'world') engine.forget_secrets(plan='test_engine.yaml') self.assertEqual(os.path.isfile('.test_engine.secrets'), False)