code: def test_tt_save():
      happy_tt.save("model/")
      result_before = happy_tt.generate_text(
          "translate English to French: Hello my name is Eric"
      )
  
      happy = HappyTextToText(model_name="model/")
      result_after = happy.generate_text(
          "translate English to French: Hello my name is Eric"
      )
  
      assert result_before.text == result_after.text
  
file_path: happy-transformer/tests/test_tt.py
imports: import torch
  from happytransformer import HappyTextToText, TTSettings, TTTrainArgs, TTEvalArgs
  from tests import happy_tt
  from tests.run_save_load import run_save_load
label_desc: Use image node_id 4 for calling a global function with example usage: test_tt_save() without return types