code: def test_init_callback(self):
      trainer = self.get_trainer()
      expected_callbacks = DEFAULT_CALLBACKS.copy() + [ProgressCallback]
      self.check_callbacks_equality(
          trainer.callback_handler.callbacks, expected_callbacks
      )
  
      # Callbacks passed at init are added to the default callbacks
      trainer = self.get_trainer(callbacks=[MyTestTrainerCallback])
      expected_callbacks.append(MyTestTrainerCallback)
      self.check_callbacks_equality(
          trainer.callback_handler.callbacks, expected_callbacks
      )
  
      # TrainingArguments.disable_tqdm controls if use ProgressCallback or PrinterCallback
      trainer = self.get_trainer(disable_tqdm=True)
      expected_callbacks = DEFAULT_CALLBACKS.copy() + [PrinterCallback]
      self.check_callbacks_equality(
          trainer.callback_handler.callbacks, expected_callbacks
      )
  
imports: import shutil
  import tempfile
  import unittest
  from unittest.mock import patch
  from transformers import DefaultFlowCallback, IntervalStrategy, PrinterCallback, ProgressCallback, Trainer, TrainerCallback, TrainingArguments, is_torch_available
  from transformers.testing_utils import require_torch
label_desc: Use image node_id 6 for calling the TrainerCallbackTest obj's underlying member method code with example usage: obj.test_init_callback() without return types