More of Test Doubles
The blog post I selected is “Understanding Test Doubles - Fakes, Stubs, Mocks, and Spies” by Sarah Dutkiewicz. I chose this resource because it gives our view of how we do test doubles with better examples for class as it explains several kinds of test doubles and shows how each one supports more focused and maintainable tests through concrete code examples. The article explains that “test doubles” is an umbrella term for objects that replace real dependencies during testing, and that not all doubles should be used in the same way. The post explains that fakes are simple working implementations made for testing, stubs return pre-programmed responses, mocks are used to verify that certain interactions happened, and spies record calls so the test can inspect them later. It continues to uses small C# examples with interfaces like IUserRepository and IExternalService to show when each type is appropriate and why choosing the right one matters. It also emphasizes that using the wro...