I write tests for each bugfix and feature with rare exception. It's a great practice to have a regression test suite that you can use to run your code in a sim

I write tests for each bugfix and feature with rare exception. It's a great practice to have a regression test suite that you can use to run your code in a simple context. The unit test suite can catch all kinds of low-hanging fruit instead of waiting until you deploy the code to your target device or production service (or even the release cycle for those).