feat: B3 uit voor veilige archive-downloads - cancel knop toegevoegd

webui/backend/tests/unit/test_task_repository.py

@@ -80,6 +80,21 @@ class TaskRepositoryTest(unittest.TestCase):
         self.assertEqual(task["status"], "requested")
         self.assertEqual(artifact["file_name"], "docs.zip")
 
+    def test_mark_cancelled_transitions_requested_download_task(self) -> None:
+        created = self.repo.create_task(
+            operation="download",
+            source="storage1/docs",
+            destination="docs.zip",
+            status="requested",
+        )
+
+        changed = self.repo.mark_cancelled(created["id"])
+        task = self.repo.get_task(created["id"])
+
+        self.assertTrue(changed)
+        self.assertEqual(task["status"], "cancelled")
+        self.assertIsNotNone(task["finished_at"])
+
     def test_migrates_legacy_tasks_schema_missing_source_destination(self) -> None:
         legacy_db_path = Path(self.temp_dir.name) / "legacy.db"
         conn = sqlite3.connect(legacy_db_path)