def test_sys_default(self):
        self.assertIs(
            sys,
            FlockerScriptRunner(
                script=None, options=None).sys_module
        )
`FlockerScriptRunner.sys` is `sys` by default.
dataset/ETHPy150Open ClusterHQ/flocker/flocker/common/test/test_script.py/FlockerScriptRunnerInitTests.test_sys_default