class_docstr: misc unittest
docstr: gpu device names unittest
code: def test_gpu_device_names(self):
      """gpu device names unittest"""
      with self.cached_session(use_gpu=False, force_gpu=False):
          devices, ngpus = misc.gpu_device_names()
          self.assertListEqual(devices, [])
          self.assertEqual(ngpus, 0)
  
file_path: delta/delta/utils/misc_test.py
imports: import numpy
  import delta.compat
  from delta.utils import misc
label_desc: Use image node_id 5 for calling the MiscTest obj's underlying member method code with example usage: obj.test_gpu_device_names() without return types