Unit test design question <p>I'd like to unit test this method</p> <pre><code>public string Edit(int id) { var item = _repository.Get(id); string json = _jsonConverotr.Convert(item); return json; } </code></pre> <p>The repository will by mocked. But the jsonConvertor is a simple class to convert an entity to json.</p> <p>So my question is,should I also mock the jsonConvertor class or is it Ok to use the original ? The jsonConvertor class is tested elsewhere.</p>