I always thought it was done with every mother for every pregnancy, but I just discovered yesterday at my midwife appointment that I won't be tested for it this time. The risk factors they look for are previous history of GD, family history of diabetes type I or II, and above normal BMI (ETA: and LGA babies - I knew there was one more risk factor I was forgetting!). I don't have any of those risk factors so I won't be tested. Don't get me wrong, I'm more than happy to forgo that fun test, it just surprised me.
With DD1, four years ago now, I had the one hour glucose challenge. With DD2, nearly two years ago, they no longer did the one hour test and everyone did the two hour test as a standard. Both of those were in Australia. I'm in England now and it's not a recommended test for everyone. Who knew?!
What is it like where you are? Do/did you get tested with every pregnancy, even if you have no risk factors? What would you prefer to do? I'm comfortable not having it done as I would truly be surprised if I developed it now, with our third baby, but I realise others may not be comfortable with that.
ETA: sorry, post went up before I finished the poll - corrected now!