Writing tests is crucial for the maintainability of your code. It's a known fact that having a good range of tests, covering most of your functionality, is as important as the functionality itself.
The first thing that comes to mind when thinking about tests is probably code quality assurance. You test the code that you write, so this is definitely ensuring the quality of your code. However, there are many other important aspects of writing tests:
- Resistance to unexpected changes: Your tests define what your code is supposed to do. They test whether your code conforms to your specifications. This has several benefits, the most obvious of which is probably a resistance to unexpected changes in the future. If you modify the code in the future, you'll be less likely to break your existing code, because your tests will validate whether the existing...