I got INFJ also. There are some questions where I wondered whether I had the correct objective answer for myself. At work, we did this several years ago to give admin a sense of how to organize us. I need to go back and check those results.
From the wiki link you provided One, I find this very true for myself :
INFJs have been mistaken for extroverts, as they tend to possess multiple personalities due to their complex inner life; however, they are true introverts
