I am intrigued by the grug page. Found a lot of my own learning and preferences are reflected into it. I expected a short fun piece, but it is a lot more comprehensive and sometimes very deep, kudos for that. While I also landed on integration tests as the ideal test (although I sometimes still call it unit test, just that my "unit" is larger than some might consider) I was wondering what is what grug doesn't like about mock testing? Is it the reflexion?