def find_invalid_namespace(self):
        application = Application()

        self.assertRaisesRegexp(
            Exception,
            'There are no commands defined in the "bar" namespace\.',
            application.find_namespace,
            'bar'
        )
Reads the collection the message needs to reach and then calls the
dataset/ETHPy150Open sdispater/cleo/tests/test_application.py/ApplicationTest.find_invalid_namespace--crossover with--dataset/ETHPy150Open comodit/synapse-agent/synapse/controller.py/Controller.call_method