Test projects on GitHub

Testing frameworks and practices for verifying software behavior.

As of October 17, 2026, the most-starred Test projects on GitHub are playwright (97.9K stars), json-server (75.7K stars) and bazel (26K stars). GitHub.Locker tracks 11 Test repositories with 328.5K stars combined. The fastest-growing on October 16 was playwright, with +71 stars in a day.

11Projects

328.5KStars in total

+101Stars in a day

Browse in the catalog →github.com/topics/test ↗

Hot right now

Most stars gained in a day · Oct 16

+71

playwright

microsoft/playwright · ★ 97.9K

Playwright is a framework for web testing and automation that drives Chromium, Firefox, and WebKit through a single API, usable in test suites, automation scripts, and as a tool for AI agents.

vitest

vitest-dev/vitest · ★ 17.3K

Vitest is a next-generation testing framework for JavaScript and TypeScript, powered by Vite. It runs unit and component tests using your existing Vite setup.

mocha

mochajs/mocha · ★ 22.9K

Mocha is a classic, battle-tested test framework for JavaScript — you write test suites that run on Node.js or directly in the browser.

pytest

pytest-dev/pytest · ★ 14.6K

pytest is a Python testing framework that makes it easy to write small tests, yet scales to support complex functional testing for applications and libraries.

The all-time top

11 projects · by stars

#1 · microsoft/playwright
playwright
Playwright is a framework for web testing and automation that drives Chromium, Firefox, and WebKit through a single API, usable in test suites, automation scripts, and as a tool for AI agents.
97.9K
#2 · typicode/json-server
json-server
json-server lets you spin up a fully working fake REST API in under 30 seconds, with no backend code to write — just a single JSON file defining your data.
75.7K
#3 · bazelbuild/bazel
bazel
Bazel is a fast, scalable, multi-language and extensible build system - one tool that builds and tests software of any size, quickly and reliably.
26K

4
javascript-testing-best-practices
24.6Kgoldbergyoni/javascript-testing-best-practices · JavaScript
A free, in-depth guide with 50+ best practices for testing JavaScript and Node.js applications, compiled and curated from dozens of blog posts, books and tools.
5
mocha
22.9Kmochajs/mocha · JavaScript
Mocha is a classic, battle-tested test framework for JavaScript — you write test suites that run on Node.js or directly in the browser.
6
enzyme
19.8Kenzymejs/enzyme · JavaScript
Enzyme is a JavaScript testing utility for React that makes it easier to test your React Components' output — you can also manipulate, traverse, and in some ways simulate runtime given the output.
7
vitest
17.3Kvitest-dev/vitest · TypeScript
Vitest is a next-generation testing framework for JavaScript and TypeScript, powered by Vite. It runs unit and component tests using your existing Vite setup.
8
pytest
14.6Kpytest-dev/pytest · Python
pytest is a Python testing framework that makes it easy to write small tests, yet scales to support complex functional testing for applications and libraries.
9
supertest
14.4Kforwardemail/supertest · JavaScript
Supertest is a library for testing Node.js HTTP servers using a fluent, chainable API built on top of superagent.
10
pest
11.7Kpestphp/pest · PHP
Pest is an elegant testing framework for PHP, built to be easy for both human developers and AI agents to write and read tests with.
11
expect
3.6Kmillionco/expect · TypeScript
Expect is a testing tool that runs your AI agent's code against a real browser, so you can verify your agent behaves correctly in an actual browser environment instead of relying on mocks.