Getting Started with hapi.js

The benefits and importance of testing code

I mentioned the concept of technical debt in the previous chapter, which, as a reminder, is the building up of work that must be done before a particular job is complete, making changes much harder to implement in the future. A codebase without tests is a clear indication of a technical debt. Let's explore this statement in more detail.

Even very simple applications will generally comprise of the following:

• Features, which the end user interacts with
• Shared services such as authentication and authorization that features interact with

These will all generally depend on some direct persistent storage, or API. And finally, for implementing most of these features and services, we will use libraries, frameworks, ...