I am recently introduced to the test-driven approach to development by my mentor at work, and he encourages me to write an unit-test whenenver “it makes sense.” I understand some benefits of having a throughout unit-test suite for both regression testing and refractoring, but I do wonder how often and how throughout we should write unit-test.
My mentor/development lead asks me to write a new unit test-case for a newly written control flow in a method that is already being tested by the exsisting test class, and I think it is an overkill. How often do you write your unit tests, and how detailed do you think your unit tests should be? Thanks!
Technically, if you’re following strict Test Driven Development…you should be writing your Unit Tests after you have spec’d any portion of your application. You should be going from:
User Requirements -> Function Design -> Unit Tests -> Code
Remembers, Tests come before Code in TDD.