code: def testOneLineResultCircularRef(self):
      circular_reference = tc.CircularReference()
      self.assertEqual(
          core._OneLineResult(
              circular_reference.create()
          ),  # pylint: disable=protected-access
          "{'y': {...}}",
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from fire import core
  from fire import test_components
  from fire import testutils
  from fire import trace
  import mock
  import six
label_desc: Use image node_id 2 for calling the CoreTest obj's underlying member method code with example usage: obj.testOneLineResultCircularRef() without return types