Adding a test to check that you're not allowed to upvote a published article

apps/rp/tests/test_votes_views.py

 from django.urls import reverse
 from django.test import TestCase
-from django.contrib.auth.models import Permission, User
+from django.contrib.auth.models import Permission
 from rest_framework.test import APIClient
 from rest_framework.test import APIRequestFactory, force_authenticate
 
@@ -75,3 +75,12 @@ class VoteViewTestCase(TestCase):
 
         article_db = Article.objects.get(id=self.article.id)
         assert article_db.status == "REJECTED"
+
+    def test_votes_error_if_publish(self):
+        article = ArticleFactory(status="PUBLISHED")
+        url_upvote = reverse("api:article-upvote", kwargs={
+            "pk": article.id
+        })
+
+        response = self.client.post(url_upvote)
+        assert response.status_code == 400