code: def test_tc_save():
      happy_tc_3.save("model/")
      result_before = happy_tc_3.classify_text("What a great movie")
  
      happy = HappyTextClassification(model_name="model/", num_labels=3)
      result_after = happy.classify_text("What a great movie")
  
      assert result_before.label == result_after.label
  
file_path: happy-transformer/tests/test_tc.py
imports: from happytransformer import HappyTextClassification, TCTrainArgs, TCEvalArgs, TCTestArgs
  from tests.run_save_load import run_save_load
  from pytest import approx
  import pytest
  from tests import happy_tc, happy_tc_3
label_desc: Use image node_id 7 for calling a global function with example usage: test_tc_save() without return types