code: def testDo_NoModel(self):
      with self.assertRaisesRegex(
          RuntimeError, "Pusher has no model input."
      ):
          self._executor.Do(
              {},  # No model and infra_blessing input.
              self._output_dict,
              self._exec_properties,
          )
  
imports: import json
  import os
  import tensorflow
  from tfx.components.pusher import executor
  from tfx.dsl.io import fileio
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import io_utils
  from tfx.utils import path_utils
label_desc: Use image node_id 15 for calling the ExecutorTest obj's underlying member method code with example usage: obj.testDo_NoModel() without return types