This test runner is designed for Node.js. It provides precise API, process isolation and comprehensive error output. It also supports new language attributes. It is ideal for testing server applications, and Node.js models. It is not the best choice for testing UI applications. AVA also has a unique feature that marks a test as a ‘to-do’ task. It is important to note that each file is independently tested and run. It also offers speed and minimalism, the ability to run tests in tandem, as well as simple test syntax. It supports sync functions and observables.
This test runner allows you to execute code on multiple web browsers. Karma supports all major browsers, even mobile versions. Karma, according to the developers of the project, is the ideal setting where specialists don’t have to set up large numbers of configurations. Instead, they can simply write code and get immediate feedback about their tests. Karma is the ideal choice for low-level unit testing.
This is an opinionated test framework that doesn’t require any configuration. According to the product information developers can test their first unit in a matter of minutes. Luna does not require the installation of additional modules to provide code coverage details. The tests should be written using ES6 modules. They can then be run in a browser. Concurrency is supported by this tool, which allows multiple test groups to be run simultaneously. It does not support trans-piling. This means that it won’t work in conjunction with TypeScript and CoffeeScript. Luna does not support older browsers.
Mocha is a Node.js-based test framework. It can also be used in the browser. It makes synchronous code testing fun and easy. This tool allows developers to run multiple tests at once. It also provides flexible reporting that is accurate and precise. It also helps map out unaccounted exceptions.