They want to know what kind of person you are, they don't take care about what you know, about your skills, they only want to know if you have certain values about general good behavior. First a human resources personal make a interview with you, she asked you about a personality test, you have to draw a person, and they analize what kind of person you could be, after personal for the area where you are applying make the interview, about you former jobs, you education, and what kind of work you like to do.