code: def test_augmentation_train_val_split(self):
      trainer_params = default_trainer_params(
          preload=False, with_split=True
      )
      with tempfile.TemporaryDirectory() as d:
          trainer_params.output_dir = d
          main(trainer_params)
  
file_path: calamari/calamari_ocr/test/test_augmentation.py
imports: import tempfile
  import unittest
  from tensorflow import keras
  from calamari_ocr.ocr.dataset.imageprocessors import AugmentationProcessorParams
  from calamari_ocr.scripts.train import main
  from calamari_ocr.test.test_train_file import uw3_trainer_params
label_desc: Use image node_id 4 for calling the TestAugmentationNoPreload obj's underlying member method code with example usage: obj.test_augmentation_train_val_split() without return types