Notes While Listening to jbrains interview on fullstackradio
38: J.B. Rainsberger - Unit Testability and the Universal Architecture
why you don’t want to mock stuff you don’t own
example: ResultSet, so many methods :o
or HttpSession or ServletRequest: getParameter and getParameterMap
reason to do TDD: not because we want to test, but because we want to use tests to give feedback on the quality of our design.
why do we want feedback on quality of our design? because we want to improve our design.
if we get feedback, we are better prepared to change our design in response on that feedback
and also thanks to those tests, we can change the design
we’re not able to change ResultSet or HttpSession
only when building little adapters/bridges and change it to smthing we want to use, we can do this
not testing the very last layer of our stuff to the very first layer of their stuff!
arrows never out of happy zone!!!