django-rest-framework/tests/test_settings.py

from __future__ import unicode_literals
from django.test import TestCase
from rest_framework.settings import APISettings


class TestSettings(TestCase):
    def test_import_error_message_maintained(self):
        """
        Make sure import errors are captured and raised sensibly.
        """
        settings = APISettings({
            'DEFAULT_RENDERER_CLASSES': [
                'tests.invalid_module.InvalidClassName'
            ]
        })
        with self.assertRaises(ImportError):
            settings.DEFAULT_RENDERER_CLASSES