+    def test_download_json(self):
+        uri = encode_data_uri(b'{"foo": "blah"}', 'application/json')
+        self.assertEqual(self.ie._download_json(uri, None), {'foo': 'blah'})
+        uri = encode_data_uri(b'callback({"foo": "blah"})', 'application/javascript')
+        self.assertEqual(self.ie._download_json(uri, None, transform_source=strip_jsonp), {'foo': 'blah'})
+        uri = encode_data_uri(b'{"foo": invalid}', 'application/json')
+        self.assertRaises(ExtractorError, self.ie._download_json, uri, None)
+        self.assertEqual(self.ie._download_json(uri, None, fatal=False), None)
+