New ask Hacker News story: Ask HN: Writing unit test mocks vs. real dependencies?

Ask HN: Writing unit test mocks vs. real dependencies?
2 by kamalkishor1991 | 2 comments on Hacker News.
I like to use real things as much as posible but I find lot of people using too much mocks sometime. Can you provide some advise on how to decide mocks vs real services/dependency? Could not find any good blog on the this specific topic.