code: def test_trust_repo_false_emptystring(self, patched_input):
      with self.assertRaisesRegex(Exception, "Untrusted repository."):
          torch.hub.load(
              "ailzhang/torchhub_example",
              "mnist_zip_1_6",
              trust_repo=False,
          )
      self._assert_trusted_list_is_empty()
      patched_input.assert_called_once()
  
      patched_input.reset_mock()
      with self.assertRaisesRegex(Exception, "Untrusted repository."):
          torch.hub.load(
              "ailzhang/torchhub_example",
              "mnist_zip_1_6",
              trust_repo=False,
          )
      self._assert_trusted_list_is_empty()
      patched_input.assert_called_once()
  
imports: import unittest
  from unittest.mock import patch
  import os
  import tempfile
  import warnings
  import torch
  import torch.hub
  from torch.testing._internal.common_utils import retry, IS_SANDCASTLE, TestCase
label_desc: Use image node_id 16 for calling the TestHub obj's underlying member method code with example usage: obj.test_trust_repo_false_emptystring(patched_input) without return types