TL;DR - Jest
- Jest is a JavaScript testing framework focused on simplicity and speed
- It provides zero-config testing with snapshots, mocking, and code coverage built-in
- Completely free and open-source
Pricing: Free forever
Best for: Individuals & startups
Score: 90/100
Pricing Plans
Most Popular
Free
Free
Open source
- Zero config
- Snapshots
- Coverage
- Mocking
About Jest
Jest tests JavaScript with zero configuration needed. Facebook built it for React, but it works for any JavaScript—testing that just works out of the box.
The defaults are sensible. Snapshot testing is built in. The performance is good.
JavaScript developers wanting testing without configuration choose Jest for effortless test setup.
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Jest FAQ
Yes, Jest is open source under MIT license. Created by Facebook/Meta. Most popular JavaScript testing framework.
Jest is a JavaScript testing framework. Unit tests, snapshots, and mocking built-in. Zero-config for most projects.
Vitest is faster with ESM and Vite projects. Jest is more established. Vitest for Vite; Jest for everything else.
Snapshot testing, mocking, code coverage, parallel tests, and watch mode. Complete testing solution.