In the past years, JavaScript and its frameworks have gained a lot of popularity. These tools, and many accompanying libraries, have been developed to offer a complete solution for building complex front-end web applications.

The more complex the solutions are, the more we see an increased need for automated processes in the full lifecycle of development. One major part of the lifecycle is automated testing, so today we are going to dive into the most popular Javascript testing frameworks.

A testing framework is simply a set of prewritten tools that helps to support or provide automated testing of an application or its parts. A testing framework should provide:

• Rules or conventions for writing test cases and organizing them into test suites
• Means to automatically execute and self-grade the tests
• Results of the tests that are displayed, formatted, and practical

Let's see an overview of a few of the most popular and widely used JS testing frameworks. We'll list their functionalities and pros and cons, and we'll help you understand them, in order to decide which one would be the best for your project.