Earlier this year fellow Lullabot Juampy wrote about how we've started using CasperJS at Lullabot in order to do regression testing. I haven't had much chance to dig into it until recently, when we decided to implement some CasperJS tests for Drupalize.Me. So far, I'm really enjoying it—except for those occasions where something in my test is simply not working, and I end up spending hours asking CasperJS to take screenshots using console.log(), and trying to figure out what is going on. Fed up with this process I wanted a debugger.