If you're new to hiking, but already have the Wallyworld poles and like them, do the same thing you'll do with any other new gear: take them on a training/shakedown hike where you'll be able to see if they hold up under more strenuous use but won't be "betting the farm" on them.

If you're an experienced hiker, you do pretty much the same thing with any new gear: take it on a trip where you won't be at risk if it does fail (you can bail out easily, have a backup with you, etc.)