Migrated app_loading doctests.

from django.db.models.loading import cache, load_app

from django.utils.unittest import TestCase

__test__ = {"API_TESTS": """

Test the globbing of INSTALLED_APPS.

>>> old_sys_path = sys.path

>>> sys.path.append(os.path.dirname(os.path.abspath(__file__)))

>>> old_tz = os.environ.get("TZ")

>>> settings = Settings('test_settings')

>>> settings.INSTALLED_APPS

['parent.app', 'parent.app1', 'parent.app_2']

class InstalledAppsGlobbingTest(TestCase):

    def setUp(self):

        self.OLD_SYS_PATH = sys.path

        sys.path.append(os.path.dirname(os.path.abspath(__file__)))

        self.OLD_TZ = os.environ.get("TZ")

>>> sys.path = old_sys_path

    def test_globbing(self):

        settings = Settings('test_settings')

        self.assertEquals(settings.INSTALLED_APPS, ['parent.app', 'parent.app1', 'parent.app_2'])

# Undo a side-effect of installing a new settings object.

>>> if hasattr(time, "tzset") and old_tz:

...     os.environ["TZ"] = old_tz

...     time.tzset()

    def tearDown(self):

        sys.path = self.OLD_SYS_PATH

        if hasattr(time, "tzset") and self.OLD_TZ:

            os.environ["TZ"] = self.OLD_TZ

            time.tzset()

"""}

class EggLoadingTest(TestCase):