Writing good unit tests is made much easier by **dependency injection**. This lets you separate your code's behavior from that of your dependencies. Many people use **mocks** to add dependencies to unit tests. I think this is usually a mistake.

Always interesting to hear different points of view on this subject. Personally I think mocks make sense to capture complex sets of interactions or otherwise difficult to reach error conditions, so I don’t think it’s a do or do-not kind of thing.

  • macnielEnglish
    8•1 year ago

    How would you isolate your thing for testing then without mocks? Contract Driven Development is the best thing to decouple development teams from eachother so that they can continue to work on their part as the teams have agreed on the API.

    And I doubt it’s different in Go.