Add user answer viewing and compaction

generic/tests/test_exam_submit_security.py

@@ -244,3 +244,50 @@ def test_import_exam_answers_post_success(cid_manager_client, exam_data, logged_
     assert answers.count() == 1
     assert answers.first().answer == "Imported Test Answer"
 
+
+@pytest.mark.django_db
+def test_answer_history_and_compacting(cid_manager_client, exam_data, logged_in_user):
+    exam, question = exam_data
+    from anatomy.models import UserAnswer as AnatomyUserAnswer
+    import reversion
+    
+    # 1. Create an answer within a revision context
+    with reversion.create_revision():
+        ans = AnatomyUserAnswer.objects.create(
+            exam=exam,
+            question=question,
+            user=logged_in_user,
+            answer="Version 1",
+        )
+        reversion.set_comment("Initial answer")
+        
+    # 2. Modify the answer within a revision context
+    with reversion.create_revision():
+        ans.answer = "Version 2"
+        ans.save()
+        reversion.set_comment("Correction")
+        
+    url = reverse("generic:view_answer_history", kwargs={
+        "app_name": "anatomy",
+        "model_name": "UserAnswer",
+        "pk": ans.pk,
+    })
+    
+    # Check GET revision list
+    response = cid_manager_client.get(url)
+    assert response.status_code == 200
+    assert b"Version 1" in response.content
+    assert b"Version 2" in response.content
+    assert b"Initial answer" in response.content
+    
+    # Test Compact Single action
+    response_compact = cid_manager_client.post(url, {"action": "compact_single"})
+    assert response_compact.status_code == 302 # redirect
+    
+    # Verify only 1 version remains
+    from reversion.models import Version
+    versions = Version.objects.get_for_object(ans)
+    assert versions.count() == 1
+    assert versions.first().field_dict["answer"] == "Version 2"
+
+