code: def testCanonicalizeWithoutDefaultDeviceCollectiveEnabled(self):
      cluster_spec = server_lib.ClusterSpec(
          multi_worker_test_base.create_cluster_spec(
              has_chief=False, num_workers=1, num_ps=0, has_eval=False
          )
      )
      server_def = tensorflow_server_pb2.ServerDef(
          cluster=cluster_spec.as_cluster_def(),
          job_name="worker",
          task_index=0,
          protocol="grpc",
          port=0,
      )
      context.context().enable_collective_ops(server_def)
      self.assertEqual(
          device_util.canonicalize("/cpu:0"),
          "/job:worker/replica:0/task:0/device:CPU:0",
      )
  
file_path: tensorflow-upstream/tensorflow/python/distribute/device_util_test.py
imports: from absl.testing import parameterized
  from tensorflow.core.protobuf import tensorflow_server_pb2
  from tensorflow.python.distribute import combinations
  from tensorflow.python.distribute import device_util
  from tensorflow.python.distribute import multi_worker_test_base
  from tensorflow.python.eager import context
  from tensorflow.python.framework import ops
  from tensorflow.python.platform import test
  from tensorflow.python.training import server_lib
label_desc: Use image node_id 6 for calling the DeviceUtilTest obj's underlying member method code with example usage: obj.testCanonicalizeWithoutDefaultDeviceCollectiveEnabled() without return types