add test for duplicated submission uuids

kobo/apps/subsequences/tests/test_submission_stream.py

@@ -241,3 +241,38 @@ def mock_submission_stream():
         assert '_supplementalDetails' in output[0]
         assert '_supplementalDetails' in output[1]
         # test other things?
+
+    def test_stream_with_extras_handles_duplicated_submission_uuids(self):
+        # Define submission data with duplicated UUIDs
+        submissions = [
+            {
+                'What_s_your_name': 'Ed',
+                'Tell_me_a_story': 'ed-18_6_24.ogg',
+                'meta/instanceID': 'uuid:1c05898e-b43c-491d-814c-79595eb84e81',
+                '_uuid': '1c05898e-b43c-491d-814c-79595eb84e81',
+            },
+            {
+                'What_s_your_name': 'Ed',
+                'Tell_me_a_story': 'ed-18_6_44.ogg',
+                'meta/instanceID': 'uuid:1c05898e-b43c-491d-814c-79595eb84e81',
+                '_uuid': '1c05898e-b43c-491d-814c-79595eb84e81',
+            },
+        ]
+        self.asset.deployment.mock_submissions(submissions)
+
+        # Process submissions with extras
+        try:
+            output = list(
+                stream_with_extras(
+                    self.asset.deployment.get_submissions(
+                        user=self.asset.owner
+                    ),
+                    self.asset,
+                )
+            )
+        except TypeError as e:
+            self.fail(f"TypeError occurred: {e}")
+        self.assertTrue(True)
+
+        # Clear all mocked submissions to avoid duplicate submission errors
+        self.asset.deployment.mock_submissions([])