“Code without tests is bad code. It doesn’t matter how well written it is; it doesn’t matter how pretty or object-oriented or well-encapsulated it is. With tests, we can change the behavior of our code quickly and verifiably. Without them, we really don’t know if our code is getting better or worse.” – Michael C. Feathers
Do you want to banish the evil spirit of terror? Or maybe you just want to be sure that you are producing a code without errors? For whatever reasons you are here I will give you a few more to stay with me and catch up with test framework in Magento 2.