Question: Dont we have to check PurchaseState?

[EmilAlipiev]

Are the lines below in the documentation are correct? are we not supposed to check PurchaseState or we accept it successful, if purchase object is not null?

if (state == PurchaseState.Purchased)

//possibility that a null came through.
        if(purchase == null)
        {
            //did not purchase
        }
        else
        {
            //purchased!
        }

[jamesmontemagno]

You can as well depending on how far down the rabbit hole you want to go.

[EmilAlipiev]

I asked this because there statuses like Canceled, Failed, Deferred, PaymentPending etc. are we not expecting these?

[jamesmontemagno]

Anything can happen. It is possible that another value comes through, especially on iOS, but not very often from my testing.