This "test" should be perfectly routine, as "married is married".

Actually, no, there shouldn't be any "test", as why would there be? The law is clear about degrees of relationship and how they inherit if someone dies intestate, so why would there be any "test"? AFAIK there hasn't been in MA.

The more normal same-sex marriages are, the more routine, the less support there is for banning them.

Yes, we figured that one out in MA too. The sky has not fallen yet. Although, truth to tell, it wasn't the "routine" that won the battle.