add a test for odd list and nonetype

gcloud/datastore/test_dataset.py

@@ -151,6 +151,26 @@ def test_get_entity_path(self):
         self.assertEqual(list(result), ['foo'])
         self.assertEqual(result['foo'], 'Foo')
 
+    def test_get_entity_odd_nonetype(self):
+        from gcloud.datastore.connection import datastore_pb
+        DATASET_ID = 'DATASET'
+        KIND = 'Kind'
+        ID = 1234
+        entity_pb = datastore_pb.Entity()
+        entity_pb.key.partition_id.dataset_id = DATASET_ID
+        path_element = entity_pb.key.path_element.add()
+        path_element.kind = KIND
+        path_element.id = ID
+        prop = entity_pb.property.add()
+        prop.name = 'foo'
+        prop.value.string_value = 'Foo'
+        connection = _Connection(entity_pb)
+        dataset = self._makeOne(DATASET_ID, connection)
+        with self.assertRaises(ValueError):
+            dataset.get_entity([KIND])
+        with self.assertRaises(TypeError):
+            dataset.get_entity(None)
+
 
 class _Connection(object):
     _called_with = None