mocha

simple, flexible, fun test framework

A flexible test runner — bring your own assertions.

When to choose it: You want a minimal, flexible runner and prefer to pick your own assertion (Chai) and mocking (Sinon) libraries.

  • + Flexible & unopinionated
  • + Mature
  • + Composable
  • - Assemble assertions/mocks yourself
  • - More setup
Latest version
11.7.6
Monthly downloads
56,732,881
GitHub stars
22,881
Minified + gzip
65.1 kB
Dependencies
21
License
MIT

Compare mocha with

vs jestvs vitestvs avavs jasmine

Data from npm, Bundlephobia and GitHub. Last updated 2026-06-02.