Mocha vs. Jest vs. Jasmine

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Jest vs Jasmine vs Mocha: What are the differences?

Jest, Jasmine, and Mocha are all JavaScript Testing Frameworks, used to test JavaScript code. Jest is used by Facebook for all React testing and works “out of the box” for any React project. Mocha runs on Node.js. Jasmine does not rely on browsers, DOM, or any particular framework, allowing it to test all JavaScript code with no dependencies. All three are open source.

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What is Mocha?

Mocha is a feature-rich JavaScript test framework running on node.js and the browser, making asynchronous testing simple and fun. Mocha tests run serially, allowing for flexible and accurate reporting, while mapping uncaught exceptions to the correct test cases.

What is Jest?

Jest provides you with multiple layers on top of Jasmine.

What is Jasmine?

Jasmine is a Behavior Driven Development testing framework for JavaScript. It does not rely on browsers, DOM, or any JavaScript framework. Thus it's suited for websites, Node.js projects, or anywhere that JavaScript can run.

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Why do you like Mocha?

Why do you like Jest?

Why do you like Jasmine?

Why do developers choose Jest vs Jasmine vs Mocha?

  • Users of Mocha love that it’s simple, flexible, and open source.
  • Jasmine fans appreciate that the Behavior-Driven Development framework can also be used for TDD (Test-Driven Development), and that it carries no dependencies (not even DOM).
  • Jest fans appreciate its speed and simplicity and that it easily tests React Native apps. Jest is backed by Facebook.

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What are some alternatives to Jest, Jasmine, and Mocha?

  • Enzyme - JavaScript testing facilities for React, by Airbnb
  • Protractor - End-to-end test framework for Angular and AngularJS applications
  • QUnit - A JavaScript unit testing framework

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