def setUp(self):
        self.app = testutil.make_app(self.root)
        testutil.start_server()
Fake version of os.rename.
dataset/ETHPy150Open openstack/wsme/tests/test_tg1.py/TestController.setUp--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver_import_hook.py/FakeRename