Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
β The programmer-friendly testing framework for Java and the JVM
Bash Automated Testing System
A next-generation test runner for Rust.
Fluent assertions for Java and Android
State of the art mutation testing system for the JVM
Collection of JUnit example projects
Claude Code template for Spring Boot and other staff (included in the tags)
A mock implementation of the AWS S3 API startable as Docker image, TestContainer, JUnit Jupiter extension or TestNG listener
A library that creates fully populated objects for your unit tests.
Modern testing with JUnit for Android.
Property-Based Testing on the JUnit Platform
:star: Codebase for various tutorials about Java, Spring Boot, AWS, Kotlin, and Testing
Fast, lightweight, and RFC 4180 compliant CSV library for Java. Zero dependencies, ~90 KiB. Trusted by Apache NiFi, JUnit, and Neo4j.
LuaUnit is a popular unit-testing framework for Lua, with an interface typical of xUnit libraries (Python unittest, Junit, NUnit, ...). It supports several output formats (Text, TAP, JUnit, ...) to be used directly or work with Continuous Integration platforms (Jenkins, Maven, ...).
JUnit 5 Extension Pack
QuickPerf is a testing library for Java to quickly evaluate and improve some performance-related properties
Evaluator-neutral AI evaluation evidence, baseline regression gates, and JSON, JUnit, and SARIF reports for CI.
One beautiful HTML test report for Playwright, Cypress and WebdriverIO, with Cucumber BDD. Shows what broke, who owns it and whether it is new. Plain-language errors, secrets masked, no server, no API keys.