two competing schools of TDD: Detroit / Classicist London / Mockist There are two competing schools of TDD: Detroit / Classicist London / Mockist Maciej Falski, Detroit and London Schools of Test-Driven Test-Driven Developement https://blog.devgenius.io/detroit-and-london-schools-of-test-driven-development- 3d2f8dca71e5 Test Doubles (Mocks, Fakes, Stubs) are a technique for writing unit tests mainly to improve

also where scale matters, for example, the moment you are dealing with large deployments, e.g. to schools, governments, • Projects to enable access to Computing will usually fail because of the COST of