It is mostly for the purpose of testing temps and fan speeds as many have complained and I am curious for myself.
Like has already been posted, the best way to test it, is to use it as you normally would. It's getting pretty sad lately, like it does every time a refresh hits (despite some wanting to remember differently than reality, this happened in 2008, 2009, 2010... ).
If you use software or conditions to purposefully max out your machine, it's going to warm up fast. That isn't a representation of how it will run in normal circumstances. Some of these posts, have been wildly misleading to new users. Even to the point that some new to Macs, are wanting to open their machines, immediately voiding their warranty (big trouble if they end up actually having problems..), to play with things they ought not bother. In another thread, myself, and another user tested our 2010 and 2011 MacBook Pro's, side by side. My 2010, is a maxed out 17 inch, and my 2011 is also maxed out for it's production run too. (both minus SSD's) Under every condition, stressing it to the limits, or idling/doing light work, side by side, they are virtually identical in temperature. I believe mine was a 4-5 degree variance at the very most. Under
every condition. The other user, tested his equally comparable 2010 and 2011 15 inch machines, with similar results. Both within a few degrees of each other also. Thus far, no one has tested (or posted about it) a 2010 and 2011 13 inch, of equal option level to each other, so they may indeed be problematic for 2011, or they may just be that much more common so more people are posting about them.
Nearly identical operating temps under every condition, with the 2011 in both our cases being much faster than their 2010 counterpart. And in our cases at least, we can prove it, undeniably.
At any rate, use it how you'll normally use it, and it will give you a good representation of what it will run at for you. If anything goes wrong, you're covered 100% by Apple

If you feel it's too warm, just take it in! They are there to help, and answer questions. Just don't let people scare you. Some try pretty hard come refresh time every year. When I got my 2010 iMac I let people's nonsensical posts about them, terrify me into nearly returning it. Someone posted actually useful info, and I just let it go for a week, and realized it was perfectly fine. But also, there are some threads with real concerns, and repairs/replacements having been done by Apple, and if you develop real issues, do have Apple look at it immediately!
Edit: I should also add, I don't mean that every post regarding heat is false or trying to scare users. But some, are, and new users need to be aware that not every one of these things is a nuke waiting to melt the world
