What is Jest?

Jest is crafted to function effortlessly without any setup for most JavaScript projects. It simplifies the process of monitoring extensive objects through various tests. Snapshots may either be kept alongside the tests or integrated directly within them for convenience. To boost efficiency, tests are run in separate processes, allowing for concurrent execution. By ensuring each test has its own unique global state, Jest guarantees dependable parallel execution. Furthermore, Jest focuses on previously failed tests and rearranges the order of execution based on how long test files take, thus accelerating the overall testing procedure. Its custom resolver also makes it easier to mock external objects within tests, contributing to a more streamlined testing workflow. In addition, Jest's user-friendly features significantly enhance productivity and accessibility for developers engaged in JavaScript application development. The combination of these functionalities makes Jest a popular choice among developers seeking efficient testing solutions.

Integrations

Offers API?:
Yes, Jest provides an API
All Jest Integrations
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Screenshots and Video

Jest Screenshot 1
Jest Screenshot 1 Jest Screenshot 2 Jest Screenshot 3 Jest Screenshot 4

Company Facts

Company Name:
Jest
Company Location:
United States
Company Website:
jestjs.io

Product Details

Deployment
SaaS
Training Options
Documentation Hub
Support
Web-Based Support

Product Details

Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English

Jest Categories and Features

Unit Testing Software

Software Testing Tool

Automated Testing
Black-Box Testing
Dynamic Testing
Issue Tracking
Manual Testing
Quality Assurance Planning
Reporting / Analytics
Static Testing
Test Case Management
Variable Testing Methods
White-Box Testing

Development Frameworks

Jest Customer Reviews

Write a Review
  • Reviewer Name: A Verified Reviewer
    Position: Principal Software Engineer
    Has used product for: 2+ Years
    Uses the product: Daily
    Org Size (# of Employees): 100 - 499
    Feature Set
    Layout
    Ease Of Use
    Cost
    Customer Service
    Would you Recommend to Others?
    1 2 3 4 5 6 7 8 9 10

    JavaScript unit testing made easy

    Date: Jul 30 2022
    Summary

    Jest is probably the easiest JS testing framework to learn and use. It is performant, easy to write and read tests with, and free. Highly recommended.

    Positive

    - very simple learning curve
    - runs tests quickly
    - declarative syntax makes it easy to read what a test should do
    - strong dependency mocking abilities
    - typescript support through plugins
    - easy to integrate with many different JS frameworks
    - good documentation
    - strong cli tooling
    - free

    Negative

    - poor at detecting memory leaks or hanging processes that can stop tests from performing well

    Read More...
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