code: def test_engine_import():
      import mxnet
  
      # Temporarily add an illegal entry (that is not caught) to show how the test needs improving
      engine_types = [
          None,
          "NaiveEngine",
          "ThreadedEngine",
          "ThreadedEnginePerDevice",
          "BogusEngine",
      ]
  
      for type in engine_types:
          with environment("MXNET_ENGINE_TYPE", type):
              reload(mxnet)
  
imports: import os
  from mxnet.test_utils import environment
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_engine_import() without return types