code: def test_refuse_non_unicode(self):
      with self.assertRaises(traitlets.TraitError):
          errors_box.ErrorsBox(errors=[42])
  
file_path: gmaps/gmaps/tests/test_errors_box.py
imports: import unittest
  import traitlets
  from ..None import errors_box
label_desc: Use image node_id 4 for calling the ErrorsBox obj's underlying member method code with example usage: obj.test_refuse_non_unicode() without return types