Fix read time when content is empty

articles/models.py

@@ -124,4 +124,7 @@ class Article(AdminUrlMixin, models.Model):
         self.save()
 
     def get_read_time(self):
-        return readtime.of_html(self.get_formatted_content).minutes
+        content = self.get_formatted_content
+        if content:
+            return readtime.of_html(content).minutes
+        return 0

articles/tests/conftest.py

@@ -10,7 +10,7 @@ from articles.models import Article, User
 @pytest.fixture()
 @pytest.mark.django_db
 def author() -> User:
-    return User.objects.create_user("gaugendre")
+    return User.objects.create_user("gaugendre", is_staff=True, is_superuser=True)
 
 
 @pytest.fixture()

articles/tests/test_admin.py

@@ -0,0 +1,12 @@
+import pytest
+from django.test import Client
+from django.urls import reverse
+
+from articles.models import User
+
+
+@pytest.mark.django_db
+def test_can_access_add_article(client: Client, author: User):
+    client.force_login(author)
+    res = client.get(reverse("admin:articles_article_add"))
+    assert res.status_code == 200