meric's Test of Consciousness
Let the AGI be placed into an artificial simulated universe. (e.g. some kind of really advanced, Escape Velocity-like universe[1])
Assuming the AGI can fulfil its needs in the artificial simulated universe and maintain its existence - When the AGI can realise the following, and not on blind faith, it can be said to be conscious:
1. The reality the AGI experiences is not the Reality.
2. Any reality the AGI can experience is merely illusory.
3. The Reality is not like any reality the AGI can experience - i.e. it's not artificially simulated.
4. The AGI cannot with any precision describe The Reality as it actually is, besides knowing it's somehow infinitely more in some way.
I think this test is more precise than the Turing test. Basically the AGI sits in the simulation and realises what it sees isn't real and there is a world beyond.
[1] https://en.wikipedia.org/wiki/Escape_Velocity_(video_game)