I'm using meanjs for a project.  It includes a yeoman generator with some express tests (model.test.js & routes.test.js)The tests do exactly what they advertise. My question is though, should I be writing tests for my express controllers as well?  Right now the routes tests make sure the server responds with the appropriate data as a whole, but should I be writing more granular tests for each part of my controller as well?  I don't see many examples of this online....
Unit test express controllers?
unit testing