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 and white (police vehicle) black and white colour scheme for newly acquired vehicles starting in 2011; existing vehicles retain their white colour scheme. Abbotsford Police Department of Abbotsford, British Columbia now has a black and white scheme for their vehicles. Saanich Police have chosen a blue and white version for their cars. South Coast British Columbia Transportation Authority Police Service in British Columbia also uses a black and white scheme. Vancouver, Victoria, Port Moody, New Westminster, and Central Saanich are all using black and white police cars. West Vancouver Police Department in British Columbia also has started to use the black and white livery.