Import test case classes from their public API module.

from django.test.testcases import TestCase

from django.test import TestCase

from django.contrib.messages.tests.urls import ContactFormViewWithMsg

from django.core.urlresolvers import reverse

from __future__ import unicode_literals

import warnings

from django.test.testcases import SimpleTestCase

from django.test import SimpleTestCase

from django.utils import six

from django.utils.deprecation import RenameMethodsBase

def setup(verbosity, test_labels):

    from django.conf import settings

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

    from django.test.testcases import TransactionTestCase, TestCase

    from django.test import TransactionTestCase, TestCase

    # Force declaring available_apps in TransactionTestCase for faster tests.

    def no_available_apps(self):