def test_serialize(self):
promise_frame = PushPromise(stream_id=1, flags={SpecialFrameFlag.END_PUSH_PROMISE})
promise_frame.deserialize(self.test_promise_payload)
frame_bytes = promise_frame.serialize()
self.assertEqual(b'\x00\x12\x05\x04\x00\x00\x00\x01\x00\x00\x11\x5cpromised stuff', frame_bytes)
