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TL;DR - Jest
- Comprehensive JavaScript testing framework
- Built-in test runner, assertions, mocking, and coverage
- Snapshot testing for capturing component output
Pricing: Free forever
Best for: Individuals & startups
Score: 89/100
Pros & Cons
Pros
- Zero configuration
- Snapshot testing
- Fast and parallel
Cons
- ESM support issues
- Can be slow on large projects
Key Features
Test runnerAssertionsMockingCoverageSnapshotsWatch mode
Pricing Plans
Free (Open Source)
Free
- Full testing framework
- Snapshot testing
- Mocking support
- Watch mode
- Zero config setup
- TypeScript support
About Jest
By Toolradar Team·
Jest is a delightful JavaScript testing framework focused on simplicity. Zero config for most JavaScript projects. Snapshot testing catches unintended UI changes. Powerful mocking capabilities for isolating tests. Watch mode re-runs tests on changes. The testing framework React teams trust for fast, reliable tests.
How we evaluate tools →Source: jestjs.io
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Jest FAQ
Is Jest free?
Yes, Jest is completely free and open source under MIT license.
Source: jestjs.io