Remember this, fellow INTJ's, that this test is not definitive. Personality is much more fluid than 16 set points and we aren't at all constrained by the category of INTJ. As objective and rational people, I hope you all will understand this the same way I do. It is quite possible for us to be extroverted in certain respects and introverted in others. We also aren't cold and calculating machines, but rational and logical thinkers. We still are human and we still feel.
Also remember that being given the label of INTJ does not turn every move you make into a calculated and rational action. We can still act on impulse and throw caution to the wind. Don't be bound by this test. And at the same time, don't become over-expectant of yourself by it. Let it, instead, shed light on your strengths.