code: def test_gen_saved_data():
      save_path = "data/test/"
      args_save = GENTrainArgs(
          eval_ratio=0.1, num_train_epochs=1, save_path=save_path
      )
  
      happy_gen.train(DATA_PATH, args=args_save)
  
      args_load = GENTrainArgs(num_train_epochs=1, load_path=save_path)
  
      happy_gen.train(DATA_PATH, args=args_load)
  
      # Should still work even if eval_filepath is provided
      happy_gen.train(
          DATA_PATH, eval_filepath=DATA_PATH, args=args_load
      )
  
imports: from happytransformer import HappyGeneration, GENTrainArgs
  import pytest
  from tests import happy_gen
label_desc: Use image node_id 4 for calling a global function with example usage: test_gen_saved_data() without return types