Jasmine vs Mocha
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A behavior-driven JavaScript testing framework that runs in browsers and Node.js.
Open source · MIT
A JavaScript test framework for running automated tests in Node.js and the browser.
The short answer
Choose Jasmine if you need…
- JavaScript developers who want a test framework with no extra dependencies
- Teams testing Node.js projects
- Developers testing browser-based websites
- People who prefer test descriptions written in plain, readable sentences
Choose Mocha if you need…
- JavaScript and Node.js developers who want automated tests for their code
- Teams maintaining browser-based JavaScript that needs tests run in a real browser
- Projects that want a long-established, widely used test runner
- Developers who want to choose their own assertion library and other tools
Side-by-side
| Jasmine | Mocha | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 15.8k | 22.9k |
| Setup difficulty | Beginner | Intermediate |
| How you get it | See the README | Install with a package manager |
| Main language | JavaScript | JavaScript |
| Last code update | 28 days ago | 6 days ago |
What each one is
Jasmine
Jasmine is a testing framework for JavaScript, written in the behavior-driven development style, where tests are written as readable descriptions of expected behavior. The README says it does not depend on browsers, the DOM, or any other JavaScript framework, so it can be used for websites, Node.js projects, or anywhere JavaScript runs.
Mocha
Mocha is a testing framework for JavaScript code. It runs test files you write, reports which checks pass or fail, and works both on Node.js and in web browsers. The README describes it as a classic, widely trusted tool, and says it is one of the most-depended-upon modules on npm.
Best for
Jasmine
- JavaScript developers who want a test framework with no extra dependencies
- Teams testing Node.js projects
- Developers testing browser-based websites
- People who prefer test descriptions written in plain, readable sentences
Mocha
- JavaScript and Node.js developers who want automated tests for their code
- Teams maintaining browser-based JavaScript that needs tests run in a real browser
- Projects that want a long-established, widely used test runner
- Developers who want to choose their own assertion library and other tools
Strengths
Jasmine
- The README states it has no dependency on browsers, the DOM, or other JavaScript frameworks
- Tests the README lists as supported across Node and major browsers, with a published support table
- Released under the permissive MIT License
Mocha
- Long-established and widely used, with the README citing heavy npm dependency use
- Runs on both Node.js and the browser
- Released under the permissive MIT license with an active OpenJS Foundation-backed project
Not ideal for
Jasmine
- People who need a graphical testing tool with no coding (tests are written as JavaScript code)
- Projects that need browser or environment support outside the listed versions, since the README says other setups are untested
Mocha
- People who want an all-in-one tool with built-in assertions and mocking, since the README presents Mocha as a runner and does not describe bundled extras
- Non-JavaScript projects, because the README covers only Node.js and the browser
- Complete beginners to programming, since writing tests still requires understanding the code under test
Trade-offs
Jasmine
- Some Node and Safari versions are supported only on a best-effort basis, per the README
- The README does not describe every feature; detailed usage is in the external documentation site
Mocha
- The README is truncated and does not show detailed usage, so the setup path is not fully visible here
- Maintained by volunteers, according to the README, which may affect response speed
- Typically needs additional libraries for assertions or mocks; the README does not list which to use
Getting started
Jasmine
Clone the repository
git clone https://github.com/jasmine/jasmine.gitMocha
Install Mocha as a dev dependency with npm
npm install --save-dev mochaFrequently asked questions
What is the difference between Jasmine and Mocha?
Jasmine: A behavior-driven JavaScript testing framework that runs in browsers and Node.js. Mocha: A JavaScript test framework for running automated tests in Node.js and the browser. Jasmine suits javascript developers who want a test framework with no extra dependencies, while Mocha suits javascript and node.js developers who want automated tests for their code.
Are Jasmine and Mocha free?
Jasmine: Free and open source. Mocha: Free and open source.
Which is easier to set up, Jasmine or Mocha?
Jasmine is easier to get started with (rated beginner); Mocha is rated intermediate and usually needs more setup.
Is Jasmine or Mocha more popular?
Mocha has more GitHub stars (22.9k) than Jasmine (15.8k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Jasmine and Mocha?
Other options people compare them with include Jest, Vitest, AVA, Enzyme, Mockito.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.