Add support for 'list_value' field of a Value protobuf.

tseaver · tseaver · commit 61e3c2c2856e · 2014-10-16T13:44:17.000-04:00
Fixes #223. Manually lands Tagtoo/gcloud-python@0475d5e, included by mistake in PR #126.
diff --git a/gcloud/datastore/_helpers.py b/gcloud/datastore/_helpers.py
@@ -112,6 +112,9 @@ def _get_value_from_value_pb(value_pb):
     elif value_pb.HasField('entity_value'):
         return Entity.from_protobuf(value_pb.entity_value)
 
+    elif value_pb.list_value:
+        return [_get_value_from_value_pb(x) for x in value_pb.list_value]
+
     else:
         return None
 
diff --git a/gcloud/datastore/test__helpers.py b/gcloud/datastore/test__helpers.py
@@ -166,6 +166,18 @@ def test_entity(self):
         self.assertTrue(isinstance(entity, Entity))
         self.assertEqual(entity['foo'], 'Foo')
 
+    def test_list(self):
+        from gcloud.datastore.datastore_v1_pb2 import Value
+
+        pb = Value()
+        list_pb = pb.list_value
+        item_pb = list_pb.add()
+        item_pb.string_value = 'Foo'
+        item_pb = list_pb.add()
+        item_pb.string_value = 'Bar'
+        items = self._callFUT(pb)
+        self.assertEqual(items, ['Foo', 'Bar'])
+
     def test_unknown(self):
         from gcloud.datastore.datastore_v1_pb2 import Value
 
