code: def test_initialize_state():
      """Tests that state is INITIALIZING after Trainer creation."""
      trainer = Trainer()
      assert trainer.state == TrainerState(
          status=TrainerStatus.INITIALIZING, fn=None, stage=None
      )
  
imports: import pytest
  from lightning.pytorch import Callback, Trainer
  from lightning.pytorch.demos.boring_classes import BoringModel
  from lightning.pytorch.trainer.states import RunningStage, TrainerFn, TrainerState, TrainerStatus
label_desc: Use image node_id 1 for calling a global function with example usage: test_initialize_state() without return types