code: def test_upgrade_bad_json():
      slc = Slice(
          datasource_type="query", params=json.dumps(sample_params)
      )
  
      assert None == upgrade_slice(slc)
  
imports: import json
  from importlib import import_module
label_desc: Use image node_id 2 for calling a global function with example usage: test_upgrade_bad_json() without return types