White-box testing The real point is that tests are usually designed from an abstract structure such as the input space, a graph, or logical predicates, and the question is what level of abstraction we derive that abstract structure from. That can be the source code, requirements, input space descriptions, or one of dozens of types of design models. Therefore, the "white-box / black-box" distinction is less important and the terms are less relevant. In penetration testing, white-box testing refers to a methodology where a white hat hacker has full knowledge of the system being attacked. The goal of a white-box penetration test
Black or White of Eddie Van Halen's blazing break on 'Beat It'". Stephen Thomas Erlewine of Allmusic highlighted the song. The Pazz & Jop critics' poll ranked "Black or White" at number 19. The Clivillés & Cole remixes for "Black or White", released as a promotional single in 1992, also charted on many European countries. In the UK, it reached number 14, and in Ireland, number 11. The promotional single also surprisingly peaked at number 18 in Australia. Despite the favourable European response to this remix, it was never included on a Michael Jackson album or compilation, except on the third disc of