Confirm Lab 2.4

Author: tim-schilling

project/tests/test_lab2_4.py

@@ -0,0 +1,36 @@
+from django.contrib.auth.models import User
+from django.core.cache import cache
+from django.test import Client, TestCase, tag
+from django.urls import reverse
+
+from project.newsletter.models import Post
+
+
+@tag("lab_test")
+class TestPostDetailCaching(TestCase):
+    def test_verify_broken(self):
+        author = User.objects.create_superuser(username="u1")
+        post = Post.objects.create(
+            author=author,
+            slug="lab2.4",
+            title="Post lab2.4",
+            is_public=True,
+            is_published=True,
+        )
+        client = Client()
+        response = client.get(
+            reverse("newsletter:view_post", kwargs={"slug": post.slug})
+        )
+        self.assertEqual(response.status_code, 200)
+
+        Post.objects.filter(id=post.id).update(is_public=False)
+        response = client.get(
+            reverse("newsletter:view_post", kwargs={"slug": post.slug})
+        )
+        self.assertEqual(response.status_code, 200)
+
+        cache.delete(f"post.detail.{post.slug}")
+        response = client.get(
+            reverse("newsletter:view_post", kwargs={"slug": post.slug})
+        )
+        self.assertEqual(response.status_code, 404)