Added file forgotten in previous commit, plus one more test.

from __future__ import unicode_literals

from django.apps import AppConfig

class MyAdmin(AppConfig):

    name = 'django.contrib.admin'

    verbose_name = "Admin sweet admin."

class MyAuth(AppConfig):

    name = 'django.contrib.auth'

    verbose_name = "All your password are belong to us."

class BadConfig(AppConfig):

    """This class doesn't supply the mandatory 'name' attribute."""

class NotAConfig(object):

    name = 'apps'

class NoSuchApp(AppConfig):

    name = 'there is no such app'

    def test_no_such_app(self):

        """

        Tests when INSTALLED_APPS contains an app config for an app that doesn't exist.

        Tests when INSTALLED_APPS contains an app that doesn't exist, either

        directly or via an app config.

        """

        with self.assertRaises(ImportError):

            with self.settings(INSTALLED_APPS=['there is no such app']):

                pass

        with self.assertRaises(ImportError):

            with self.settings(INSTALLED_APPS=['apps.apps.NoSuchApp']):

                pass