So classicist try to write the test that they do not break when you change the implementation (e.g refactoring) Mockist don't care so much about this, they foc

So classicist try to write the test that they do not break when you change the implementation (e.g refactoring) Mockist don't care so much about this, they focus on isolating the unit. Interesting fact: Originally unit tests are called unit tests because they can be executed independently from any other tests. Not because they test a single unit.