I'm more a syadmin type than a developer, but still get hit with online "testing" requests sometimes: a couple SQL tests for some support position, a couple psychological tests, etc. These are now a hard line for me. Why? Maybe I misunderstand...but my time is valuable, too. If HR or the hiring manager wants to reach out for a round 1 interview and then tell me a week later I'm one of your top candidates, and would I please take some online testing to continue the process, fine. But not the other way around.