TestableCode

Stakeholders demand quick fixes for a buggy app release. Such patching is costly, and does not always offer a complete solution. Break the cycle with unit testing, a worthwhile investment in project quality.

Writing code that is easily testable takes some effort and planning. However, some patterns exist that can be used to write simple and functional code, making it easier to test them when the time comes. In this article, Toptal engineer Joshua Mock shares some useful tips and patterns for writing testable code in JavaScript that are both simple to understand and simple to implement.