code: def test_assign_all_enum_values(self):
      # pylint: disable=no-member
      enum_values = list(Color.__members__.values())
      for value in enum_values:
          self.assertIsInstance(value, Color)
          example = self.Example()
          example.color = value
          self.assertEqual(example.color, value)
          self.assertIsInstance(value, Color)
  
imports: import enum
  import unittest
  from traitlets import CaselessStrEnum, Enum, FuzzyEnum, HasTraits, TraitError, UseEnum
label_desc: Use image node_id 2 for calling the TestUseEnum obj's underlying member method code with example usage: obj.test_assign_all_enum_values() without return types