Handle non-dict results

arkindex/dataimport/serializers.py

@@ -43,6 +43,8 @@ class TaskSerializer(serializers.Serializer):
             return 1.0
         if obj.state == 'PROGRESS':
             result = obj._get_task_meta().get('result') or {}
+            if not isinstance(result, dict):
+                return 0.0
             return result.get('progress', 0.0)
         return 0.0
 

arkindex/dataimport/tests/test_task_serializer.py

@@ -52,6 +52,25 @@ class TestTaskSerializer(TestCase):
             }
         )
 
+    def test_progress_list(self):
+        self.task_mock.state = 'PROGRESS'
+        self.task_mock._get_task_meta.return_value = {
+            'task_name': 'task.name',
+            'messages': ['something'],
+            'result': ['some', 'list'],
+        }
+        self.assertDictEqual(
+            TaskSerializer(self.task_mock).data,
+            {
+                'id': str(self.task_mock.id),
+                'name': 'task.name',
+                'state': 'PROGRESS',
+                'messages': ['something'],
+                'progress': 0.0,
+                'parent_id': str(self.task_mock.parent.id),
+            }
+        )
+
     def test_progress_none(self):
         self.task_mock.state = 'PROGRESS'
         self.task_mock._get_task_meta.return_value = {