Method add_callback

python/python3/tornado/test/ioloop_test.py:50–52

(self, callback, *args, **kwargs)

        old_add_callback = loop.add_callback

        def add_callback(self, callback, *args, **kwargs):
            test.calls += 1
            old_add_callback(callback, *args, **kwargs)

        loop.add_callback = types.MethodType(add_callback, loop)  # type: ignore
        loop.add_callback(lambda: {})  # type: ignore