human
Solve the following python programming problem given the following code:
@ mock.patch.object (six.moves.builtins, 'open') 
@ mock.patch ('nova.image.glance.GlanceImageService.show') 
def test_download_data_dest_path_write_fails(self, show_mock, open_mock) : 
    client = mock.MagicMock () 
    client.call.return_value = [1, 2, 3] 
    ctx = mock.sentinel.ctx 
    service = glance.GlanceImageService (client) 
    class FakeDiskException (Exception) : 
        pass 
class Exceptionator (StringIO) : 
        def write(self, _) : 
            raise FakeDiskException ('Disk full!') 
self.assertRaises (FakeDiskException, open_mock.download, ctx, mock.sentinel.image_id, data = Exceptionator ()) 

    
    

    Fix the buggy line: self.assertRaises (FakeDiskException, open_mock.download, ctx, mock.sentinel.image_id, data = Exceptionator ())
assistant
#Here is Python code to fix the buggy line: self.

self.assertRaises (FakeDiskException, service.download, ctx, mock.sentinel.image_id, data = Exceptionator ())