def test_save_whitelist(self): try: os.makedirs(settings.WHITELIST_FILE.replace('whitelist', '')) except OSError: pass self.addCleanup(self.wipe_whitelist) self.assertEqual(save_whitelist({'a.b.c.d','e.f.g.h'}), None) self.assertEqual(load_whitelist(), {'a.b.c.d','e.f.g.h'})