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description=The classic, reliable, trusted JavaScript test framework for Node.js & the Browser. ☕;

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Text of the page (random words):
mocha classic reliable trusted skip to content mocha search ctrl k cancel discord github select theme dark light auto getting started running mocha browsers cli configuring editor plugins test globs declaring tests dynamic tests exclusive tests inclusive tests pending tests retrying tests features arrow functions assertions asynchronous code diffs error codes global fixtures hooks parallel mode root hook plugins timeouts interfaces about bdd default exports qunit require tdd third party reporters about doc dot html json stream json landing list markdown min nyan progress spec default tap third party xunit explainers compilers deprecation counting assertions detecting multiple calls to done environment variables find global leaks global variables node js native esm support programmatic usage related tools run cycle overview security vulnerability reports shared behaviours spies stub stdout tagging with grep test duration test fixture decision tree third party reporters third party uis typescript api discord github select theme dark light auto on this page overview sponsors backers more information on this page overview sponsors backers more information mocha new documentation site hello welcome to the newly revamped mochajs org if you see any bugs or typos please file a docs issue on mochajs mocha thanks for the old docs website see legacy mochajs org mocha is a feature rich javascript test framework running on node js and in the browser making asynchronous testing straightforward and fun mocha tests run serially allowing for flexible and accurate reporting while mapping uncaught exceptions to the correct test cases get started configuration reference sponsors section titled sponsors use mocha at work ask your manager or marketing team if they d help support our project your company s logo will also be displayed on npmjs com and our github repository backers section titled backers find mocha helpful become a backer and support mocha with a monthly donation more information section titled more information in addition to chatting with us on our discord for additional information such as using spies mocking and shared behaviours be sure to check out the mocha wiki on github for a running example of mocha view example tests html for the javascript api view the api documentation or the source mochajs org is licensed under a creative commons attribution 4 0 international license copyright openjs foundation and mocha contributors all rights reserved the openjs foundation has registered trademarks and uses trademarks for a list of trademarks of the openjs foundation please see our trademark policy and trademark list trademarks and logos not indicated on the list of openjs foundation trademarks are trademarks or registered trademarks of their respective holders use of them does not imply any affiliation with or endorsement by them the openjs foundation terms of use privacy policy openjs foundation bylaws trademark policy trademark list cookie policy last updated sat 16 may 2026 16 01 23 gmt