Update testdataset.py

testdataset.py

@@ -91,6 +91,16 @@ class TestDataset(datasets.GeneratorBasedBuilder):
 
     DEFAULT_CONFIG_NAME = "testdataset_source"
 
+    def _download_from_synapse(syn_id, path):
+        try:
+            import synapseclient
+            import synapseutils
+        except ModuleNotFoundError as e:
+            raise ModuleNotFoundError("synapseclient must be installed. pip install synapseclient")
+        syn = synapseclient.login()
+        synapseutils.syncFromSynapse(syn, syn_id, path=path)
+        # syn.get(entity=syn_id, downloadLocation=path)
+
     def _info(self) -> datasets.DatasetInfo:
         features = datasets.Features(
             {
@@ -112,7 +122,9 @@ class TestDataset(datasets.GeneratorBasedBuilder):
         )
 
     def _split_generators(self, dl_manager) -> List[datasets.SplitGenerator]:
-        data_dir = self.config.data_dir
+        # This is where we can call the custom download function for Synapse
+        data_dir = dl_manager.download_custom(_SYN_ID, self._download_from_synapse)
+        # data_dir = self.config.data_dir
         if data_dir is None:
             raise ValueError(
                 "This is a local dataset. Please pass the data_dir kwarg to load_dataset."