Mocha

A feature-rich JavaScript test framework running on Node.js

About

Mocha is a feature-rich JavaScript test framework that runs on Node.js and in the browser, making asynchronous testing simple and fun. It is designed for developers who want to write tests for their JavaScript applications, and is particularly useful for those working with Node.js. With Mocha, developers can write and run tests in a flexible and efficient manner.

Details

Some of the key features of Mocha include:

  • Browser support
  • Simple async support, including promises
  • Test coverage reporting
  • String diff support
  • JavaScript API for running tests
  • Auto-detects and disables coloring for non-TTYs
  • Async test timeout support
  • Test retry support
  • Test-specific timeouts
  • Reports test durations
  • Highlights slow tests
  • File watcher support
  • Global variable leak detection
  • Optionally run tests that match a regexp
  • Auto-exit to prevent “hanging” with an active loop
  • Easily meta-generate suites & test-cases
  • Config file support
  • Node debugger support
  • Node native ES modules support
  • Source-map support
  • Detects multiple calls to done()
  • Use any assertion library you want
  • Extensible reporting, bundled with 9+ reporters
  • Extensible test DSLs

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