# mawrkus/js-unit-testing-guide

📙  A guide to unit testing in Javascript

Repository: https://github.com/mawrkus/js-unit-testing-guide
Canonical: https://ross.abutalabs.com/products/js-unit-testing-guide
License Family: other
Topics: unit-testing, unit-test, tdd, katas, javascript, testing, best-practices
Last push: 2025-09-20T09:15:51+00:00

## Health v2 (maintenance only)
Score: 52/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 43, release rhythm 35, longevity 100
- inputs: {"age_days": 4192, "days_push": 347, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1963, forks 174 (observed 2026-08-28T04:05:59.708788+00:00)

## What it is
A living-document guide to unit testing in JavaScript, covering general principles, TDD, test structure, naming, mocking, and best practices with illustrative examples. It is maintained as a markdown document with community contributions and translations.

## Use cases
- learn how to write unit tests in javascript
- best practices for structuring javascript unit tests
- how to apply TDD in javascript projects
- when to mock dependencies in unit tests
- how to name and organize test cases
- improve test code quality before code review
- practice testing with code katas

## When to choose
- you want a concise, opinionated reference on JavaScript unit testing principles
- you are onboarding developers to TDD and unit testing practices
- you need guidelines for reviewing test code

## When to avoid
- you need a runnable testing framework or tool rather than documentation
- you need end-to-end or integration testing guidance specifically
- you need framework-specific documentation like Jest or Vitest APIs

## Facets
- artifact type: learning-resource
- maturity: active
- function: testing, documentation
- domain: testing, developer-tools, tutorials
- platform: cross-platform
- tags: unit-testing, tdd, best-practices, javascript, guide, katas, nodejs

## Member repositories
- mawrkus/js-unit-testing-guide (main) score 52

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:59.708788+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 2026-08-30T03:05:33.257781+00:00, confidence not recorded.
  - readme: https://github.com/mawrkus/js-unit-testing-guide (fetched 2026-08-28T04:05:59.708788+00:00, sha 4ec3ff0055ee)
- Data as of 2026-08-30T08:39:29.467469+00:00.