def METHOD_NAME(self):
    response = self.user1_rest_client.post(
        path="/api/v1/auth/phone-number/",
        data={"phone_number": "+4747474747"},
    )
    self.assertEqual(response.status_code, status.HTTP_201_CREATED)
    self.assertTrue(DestinationConfig.objects.filter(pk=response.data["pk"]).exists())