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 (Steve Harley & Cockney Rebel song) to the album's theme: "...what it is, though, is a fine record that shows Harley obsessed with cabaret and color this time out as evidence the title - "Red is a Mean, Mean Color", "White White Dove", and "Black or White"." Dave Thompson of AllMusic retrospectively reviewed "Timeless Flight" and felt the song displayed "deliberately impenetrable wordplay", but highlighted it as an album standout by labeling it an AMG Pick Track. In 2003 Martin Aston of "Q" wrote: ""Timeless Flight" bears plenty of Harley's melodic hallmarks, but some complex tripwires keep popping up: "Black or White" is a rare showing