code: def test_register_backend(self):
      view = self.client.load_balanced_view()
      view.register_joblib_backend("view")
      p = Parallel(backend="view")
      assert p._backend._view is view
  
file_path: ipyparallel/ipyparallel/tests/test_joblib.py
imports: import warnings
  from unittest import mock
  import pytest
  import ipyparallel
  from .clienttest import ClusterTestCase, add_engines
label_desc: Use image node_id 3 for calling the TestJobLib obj's underlying member method code with example usage: obj.test_register_backend() without return types