def test_config_returns_copy_after_freeze(self):
config_manager = ConfigManager()
config_manager['hello'] = 'goodbye'
config_manager.freeze()
config_manager.config()['second'] = 'changed thing'
self.assertEqual({
'hello': 'goodbye',
'run_script_environment': {}
}, config_manager.config())
def test_frozen(self):
config_manager = ConfigManager()
config_manager.freeze()
self.assertTrue(config_manager.frozen())
