Use "SLOW TEST CARD" for purchases - MOBILE IAP -

Using MobileIAP:

I'm making a game. It has a Premium purchase (Non-comsumable) and other consumable purchases.

There are 4 test card options when purchase something on Android*(Check picture):

1.Slow test card, approves after a few minutes

2.Test card, always approves

3.Test card, always declines

4.Slow test card, declines after a few minutes

The 2nd and 3th options are easy, because you get the accept or reject of the purchase at the moment.. But i don't know how to implement 1st and 4th. Specially for consumable purchases (dont know how to track it).

I could freeze the screen until card is aproved or declined, but it doesn't make sense (could take 5 minutes). And what happens if the user exit the App? Or turn off phone.

Any idea? Thnaks