Also you need to understand that if you start personality testing people you will never get any truthful information from your candidates. They do this kind of testing for many retail sales roles and every sales associate you'll ever meet knows exactly how to answer every question to maximize extraversion and minimize undesirable traits. It quickly stops being a test of whether you have what it takes, unless your intent is to test whether people are deeply aware of how fake personality testing is and exactly how to game the system to get past it.
My comment was to question why the interview should be framed as something implicity adversarial to begin with. And why it's probably better to use something like references to validate what it would be like to work with someone rather than rely on our own dubious judgement or the positively biased judgement of the candidate's.