code: def test_init(self):
      conf = Configuration()
  
      self.assertEqual(conf.to_dict(), dict())
  
      conf.set_string("k1", "v1")
      conf2 = Configuration(conf)
  
      self.assertEqual(conf2.to_dict(), {"k1": "v1"})
  
file_path: flink/flink-python/pyflink/common/tests/test_configuration.py
imports: from copy import deepcopy
  from pyflink.common import Configuration
  from pyflink.testing.test_case_utils import PyFlinkTestCase
label_desc: Use image node_id 1 for calling the ConfigurationTests obj's underlying member method code with example usage: obj.test_init() without return types