code: def test_unloadable_nonascii(self):
      # Test behavior with nonexistent module with non-ASCII name.
      name = "fo\xf3"
      with self.assertRaises(ImportError) as cm:
          self.load_module_by_name(name)
      self.assertEqual(cm.exception.name, name)
  
imports: from test.test_importlib import abc, util
  import os.path
  import sys
  import types
  import unittest
  import warnings
  import importlib.util
  import importlib
  from test.support import MISSING_C_DOCSTRINGS
label_desc: Use image node_id 12 for calling the MultiPhaseExtensionModuleTests obj's underlying member method code with example usage: obj.test_unloadable_nonascii() without return types