code: def test_circular_composite(self):
      dct2 = {}
      dct2["a"] = []
      dct2["a"].append(dct2)
      self.assertRaises(ValueError, json.dumps, dct2)
  
file_path: catboost/contrib/python/simplejson/py2/simplejson/tests/test_check_circular.py
imports: from unittest import TestCase
  import simplejson
label_desc: Use image node_id 3 for calling the TestCheckCircular obj's underlying member method code with example usage: obj.test_circular_composite() without return types