Understanding the importance of testing

Imagine building a beautiful birdhouse, adorned with intricate details. In normal temperature and climate circumstances, everything looks perfect, and you feel proud of yourself. The birdhouse, which was built in the summertime, seems to satisfy your needs. If you haven’t tested its resistance against wind and rain, the first storm could send it crashing down, leaving your feathered friends exposed and your efforts wasted.

The same principle applies to building software, especially intricate systems such as NestJS REST APIs. Testing isn’t a luxury; it’s the sturdy foundation that ensures your API functions gracefully under diverse conditions, protecting your users and your reputation.

The painful cost of skipping tests

Many developers know the sting of skipping tests, only to encounter bugs in production environments. Imagine these scenarios:

• A critical login function malfunctions, preventing users from accessing...