test_glance.py 文件源码

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)

        # NOTE(mikal): data is a file like object, which in our case always
        # raises an exception when we attempt to write to the file.
        class FakeDiskException(Exception):
            pass

        class Exceptionator(StringIO):
            def write(self, _):
                raise FakeDiskException('Disk full!')

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