code: def test_constructor(self, device_spec_type):
      d = device_spec_type(
          job="j", replica=0, task=1, device_type="CPU", device_index=2
      )
      self.assertEqual("j", d.job)
      self.assertEqual(0, d.replica)
      self.assertEqual(1, d.task)
      self.assertEqual("CPU", d.device_type)
      self.assertEqual(2, d.device_index)
      self.assertEqual(
          "/job:j/replica:0/task:1/device:CPU:2", d.to_string()
      )
  
      d = device_spec_type(device_type="GPU", device_index=0)
      self.assertEqual("/device:GPU:0", d.to_string())
  
file_path: tensorflow-upstream/tensorflow/python/framework/device_spec_test.py
imports: from absl.testing import parameterized
  from tensorflow.python.framework import device_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 2 for calling the DeviceSpecTest obj's underlying member method code with example usage: obj.test_constructor(device_spec_type) without return types