code: def test_create_tensorlist_as_tensor():
      arr = np.random.rand(3, 5, 6)
      tensorlist = TensorListCPU(arr, "NHWC")
      tensor = tensorlist.as_tensor()
      assert_array_equal(np.array(tensor), tensorlist.as_array())
  
imports: import numpy
  import nvidia.dali.fn
  import nvidia.dali.types
  import warnings
  from numpy.testing import assert_array_equal
  from nvidia.dali import pipeline_def
  from nvidia.dali.backend_impl import TensorCPU, TensorListCPU, TensorListGPU
  from nvidia.dali.backend_impl import types
  import nvidia.dali
  from nose_utils import assert_raises
  from nose import SkipTest
  from test_utils import dali_type_to_np, py_buffer_from_address, get_device_memory_info
label_desc: Use image node_id 6 for calling a global function with example usage: test_create_tensorlist_as_tensor() without return types