Where can I find articles on unit testing applications on nodejs/express (not bdd)?

Question

Node.js

Googled everything possible. We need articles (available in English) How to unit test an application and its parts (methods).

Answer 1

In order to test application modules, it is necessary that it has a competent architecture that allows it to be done. Express you hardly need to test (i.e. send a real http request), most likely it will be enough to call actions with parameters, headers, etc.
In general, the question is not well formulated.

Answer 2

read a book on unit testing in general, arm yourself with nodeunit and try.