tikm "For example, don't see the point of including source code for the tests you wrote." Integration tests are the ONLY example of included big source code files that I do not explain in details. I've provided links to source files instead of source code for functional tests because they test the app as a black box—they do not care about the inside structure and are not based on it. They only care about the API. On the other hand, integration tests share characteristics of unit tests in that you mock some interactions between layers. As I've mentioned before, this article was restructured to be easier to digest. Because of the different main project structure, integration tests will differ in the source code. Other people recognize it as useful, as you can see in the other comments.

Thanks for the catch, improved.

I'm delighted to hear that. Thanks :D

I explained the reasons why this article is long: I explain each line of code without leaving anything up to debate. I mention in the article that these functionalities are based on my GitLab project, to which I include a link (in text and in the end in sources). I specifically dumbed down the authentication implementation from the hexagonal architecture to self-contained layers. You can check out my project, but I assume many might still not know what hexagonal architecture is, so I've shifted focus from how my project is structured to only what is important for you. I made extra effort to rewrite parts of the project only for the convenience of people that gonna read it. There is a lot of information; it's not intended to be read in 15 minutes, because everything is explained from top to the bottom.