# testem/testem

Test'em 'Scripts! A test runner that makes Javascript unit testing fun.

Repository: https://github.com/testem/testem
Canonical: https://ross.abutalabs.com/products/testem
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2026-08-26T21:27:28+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 5531, "days_push": 7, "days_rel": 7, "gap_med": 70.5, "n_releases_24m": 9}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2917, forks 411 (observed 2026-08-28T04:07:30.011504+00:00)

## What it is
Testem is a JavaScript test runner that executes tests in real desktop browsers (Chrome, Firefox, Safari, Edge), Node, or custom launchers. It is framework-agnostic, supporting Jasmine, QUnit, Mocha, and custom adapters, with workflows for both TDD and CI.

## Use cases
- run javascript unit tests in real browsers
- test runner for mocha jasmine qunit
- run browser tests in ci pipeline
- tdd workflow for javascript
- headless chrome test runs
- run tests across chrome firefox safari edge

## When to choose
- you need tests running in real browser engines rather than simulated DOM environments
- you want a framework-agnostic runner supporting multiple test frameworks
- you need both interactive TDD mode and CI integration with GitHub Actions or Jenkins

## When to avoid
- your project is not JavaScript/Node-based
- you only need Node-only tests without browser execution
- you prefer an all-in-one framework that prescribes its own testing style

## Facets
- artifact type: cli-tool
- maturity: active
- function: testing, e2e-testing, cli, ci-cd
- domain: testing, developer-tools, web-development
- platform: cli, cross-platform, windows
- tags: test-runner, browser-testing, tdd, javascript-testing, framework-agnostic, javascript, nodejs, macos, linux

## Member repositories
- testem/testem (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:30.011504+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:34:05.180404+00:00, confidence not recorded.
  - readme: https://github.com/testem/testem (fetched 2026-08-28T04:07:30.011504+00:00, sha 986623d4a090)
- Data as of 2026-08-30T08:39:29.467469+00:00.