def test_user_optin_invalid(self):
        #opt into an experiemnt that doesn't
        response = test_get_and_post_form(
            self.client,
            reverse("opt_in_experiment"),
            {"experiment":234},
        )
        self.assertNotContains(response, "successfully")
        uopt = UserOpts.objects.filter(user__username__exact="user")
        self.assertEqual(len(uopt),0)
        actual_fv_rules_count = DummyFVRule.objects.all().count()
        self.assertEqual(actual_fv_rules_count,0)
Initialize all valid properties.
dataset/ETHPy150Open fp7-ofelia/ocf/optin_manager/src/python/openflow/optin_manager/opts/tests.py/Tests.test_user_optin_invalid--crossover with--dataset/ETHPy150Open smart-on-fhir/client-py/fhirclient/models/immunization.py/ImmunizationExplanation.__init__