[pmontra]

It's hard to really test business logic without hitting the database or other components, no matter the language and the framework. You really have to trust your mocks and sometimes you discover only in production that one of them didn't do what it should do. It happened to me.

The teams I work with tend to write unit tests to demonstrate that a class or module or whatever work, then integration tests to demonstrate that that part of the application works from the frontend code down to the database.