docstr: Tests that we refuse to save a generation config that fails validation.
docstr_tok: ["Tests","that","we","refuse","to","save","a","generation","config","that","fails","validation","."]
code: def test_refuse_to_save(self):
      """Tests that we refuse to save a generation config that fails validation."""
  
      # setting the temperature alone is invalid, as we also need to set do_sample to True -> throws a warning that
      # is caught, doesn't save, and raises an exception
      config = GenerationConfig()
      config.temperature = 0.5
      with tempfile.TemporaryDirectory() as tmp_dir:
          with self.assertRaises(ValueError) as exc:
              config.save_pretrained(tmp_dir)
          self.assertTrue(
              "Fix these issues to save the configuration."
              in str(exc.exception)
          )
          self.assertTrue(len(os.listdir(tmp_dir)) == 0)
  
      # greedy decoding throws an exception if we try to return multiple sequences -> throws an exception that is
      # caught, doesn't save, and raises a warning
      config = GenerationConfig()
      config.num_return_sequences = 2
      with tempfile.TemporaryDirectory() as tmp_dir:
          with self.assertRaises(ValueError) as exc:
              config.save_pretrained(tmp_dir)
          self.assertTrue(
              "Fix these issues to save the configuration."
              in str(exc.exception)
          )
          self.assertTrue(len(os.listdir(tmp_dir)) == 0)
  
      # final check: no warnings/exceptions thrown if it is correct, and file is saved
      config = GenerationConfig()
      with tempfile.TemporaryDirectory() as tmp_dir:
          with warnings.catch_warnings(
              record=True
          ) as captured_warnings:
              config.save_pretrained(tmp_dir)
          self.assertEqual(len(captured_warnings), 0)
          self.assertTrue(len(os.listdir(tmp_dir)) == 1)
  
imports: import copy
  import os
  import tempfile
  import unittest
  import warnings
  from huggingface_hub import HfFolder, delete_repo
  from parameterized import parameterized
  from requests.exceptions import HTTPError
  from transformers import AutoConfig, GenerationConfig
  from transformers.testing_utils import TOKEN, USER, is_staging_test
label_desc: Use image node_id 7 for calling the GenerationConfigTest obj's underlying member method code with example usage: obj.test_refuse_to_save() without return types