# scalatest/scalatest

A testing tool for Scala and Java developers

Repository: https://github.com/scalatest/scalatest
Canonical: https://ross.abutalabs.com/products/scalatest
Language: Scala
License: Apache-2.0
License Family: permissive
Last push: 2026-08-25T03:45:19+00:00

## Health v2 (maintenance only)
Score: 80/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 44, longevity 100
- inputs: {"age_days": 4896, "days_push": 8, "days_rel": 160, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1167, forks 335 (observed 2026-08-28T04:03:50.693324+00:00)

## What it is
ScalaTest is a free, open-source testing toolkit for Scala and Java programmers, widely used in the Scala ecosystem for over 17 years. It provides expressive and flexible styles for writing unit, integration, and behavior-driven tests on the JVM.

## Use cases
- write unit tests for scala code
- test java applications on the jvm
- behavior-driven development testing in scala
- run test suites with sbt
- test scala.js projects

## When to choose
- you are developing in Scala and need a mature, widely adopted testing framework
- you want flexible testing styles including BDD and TDD in one toolkit
- you need a stable, long-maintained testing library for JVM projects

## When to avoid
- you are working outside the JVM ecosystem
- you need a minimal zero-dependency test runner for simple scripts

## Facets
- artifact type: library
- maturity: stable
- function: testing
- domain: testing, developer-tools
- platform: jvm, cross-platform
- tags: unit-testing, scala, java, test-framework, bdd

## Member repositories
- scalatest/scalatest (main) score 80

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:50.693324+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 2026-08-30T06:28:53.290141+00:00, confidence not recorded.
  - readme: https://github.com/scalatest/scalatest (fetched 2026-08-28T04:03:50.693324+00:00, sha 210cab06b307)
- Data as of 2026-08-30T08:39:29.467469+00:00.