Test Strategy

Designing a Test Portfolio for Useful Feedback

A test suite can contain thousands of tests and still give poor engineering feedback. It may run slowly, fail for unrelated reasons, miss important integration mistakes, or make small implementation changes expensive because too many tests depend on internal details. The usual response is to argue about test categories: more unit tests, fewer end-to-end tests, or a particular shape such as a testing pyramid. Those models can be useful reminders, but a fixed ratio does not tell you whether a specific test earns its cost.