Update test.py

test.py

@@ -285,6 +285,17 @@ class Test(datasets.GeneratorBasedBuilder):
                 for target in targets
             )
         )
+        raise Exception(dl_manager.download(
+                 dict(   (
+                        placeholder_key,
+                        dict(
+                            (target, _URLS[target][placeholder_key])
+                            for target in targets
+                        ),
+                    )
+                    for placeholder_key in ("placeholder","test")
+                )
+                                         ))
         mapped_paths = dl_manager.extract( dl_manager.custom_download(
                  dict(   (
                         placeholder_key,