1  class ESC[4;38;5;81mExceptionIsLikeMixin:
       2      def assertExceptionIsLike(self, exc, template):
       3          """
       4          Passes when the provided `exc` matches the structure of `template`.
       5          Individual exceptions don't have to be the same objects or even pass
       6          an equality test: they only need to be the same type and contain equal
       7          `exc_obj.args`.
       8          """
       9          if exc is None and template is None:
      10              return
      11  
      12          if template is None:
      13              self.fail(f"unexpected exception: {exc}")
      14  
      15          if exc is None:
      16              self.fail(f"expected an exception like {template!r}, got None")
      17  
      18          if not isinstance(exc, ExceptionGroup):
      19              self.assertEqual(exc.__class__, template.__class__)
      20              self.assertEqual(exc.args[0], template.args[0])
      21          else:
      22              self.assertEqual(exc.message, template.message)
      23              self.assertEqual(len(exc.exceptions), len(template.exceptions))
      24              for e, t in zip(exc.exceptions, template.exceptions):
      25                  self.assertExceptionIsLike(e, t)