[ezanmoto]

Just reading the comments, I agree with the common sentiment that you should have more unit tests than integration tests, but I have come around to the way of thinking that if I only have time to write a few tests then I would rather write E2E tests. This way, at the very least your entire stack is being exercised, and you have a way of ensuring that the happy path is passing consistently, which is the most important flow for an application (even if I'm personally more interested in keeping other flows sane). While I prefer unit tests due to their simplicity, speed and the speed at which they can aid debugging, these days I will only implement them after I have added a few E2E tests.