Top 12 Java integration-testing Projects

Testcontainers

1 13 8,191 9.6 Java

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.

Project mention: One Container to Rule Them All - Until It Doesn’t | dev.to | 2025-03-11

There are a handful of ways to start Testcontainers, including JUnit4 annotations, JUnit5 annotations, ApplicationContextInitializer, JDBC URL scheme, and manual container lifecycle control. Let's choose manual control for now as the least "magic" option:
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java-dns-cache-manipulator

2 1 925 5.3 Java

🌏 A tiny 0-dependency thread-safe Java™ lib for setting/viewing dns programmatically without touching host file, make unit/integration testing portable; and a tiny tool for setting/viewing dns of running JVM process.
GreenMail

3 2 664 9.0 Java

Official master for the Greenmail project
Citrus

4 2 465 9.5 Java

Framework for automated integration tests with focus on messaging integration

Project mention: The Top 15 API Testing Frameworks: Your Ultimate Guide | dev.to | 2024-08-19

Introduction: Citrus is tailored for testing complex enterprise applications that rely on messaging protocols. Its ability to test various integration scenarios makes it invaluable for larger applications.
JMockit

5 0 463 5.5 Java

Advanced Java library for integration testing, mocking, faking, and code coverage
arquillian-core

6 3 383 8.3 Java

Arquillian provides a component model for integration tests, which includes dependency injection and container life cycle management. Instead of managing a runtime in your test, Arquillian brings your test to the runtime.

Project mention: The streaming bridges — A Kafka, RabbitMQ, MQTT and CoAP example | dev.to | 2024-12-25

Arquillian
maven-it-extension

7 3 91 5.8 Java

Experimental JUnit Jupiter Extension for writing integration tests for Maven plugins/Maven extensions/Maven Core
InfluxDB

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InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
bdd-for-all

8 1 51 0.0 Java

Flexible and easy to use library to enable your behavorial driven development (BDD) teams to easily collaborate while promoting automation, transparency and reporting.
chocotea

9 2 42 10.0 Java

A library that generates postman collection and integration tests from java code
contacts-app

10 1 9 9.6 Java

A modular, scalable, and maintainable Spring Boot microservices application demonstrating a HexaLayered Architecture for phone directory management and asynchronous reporting. (by agitrubard)

Project mention: Contacts Application with Microservices and Asynchronous Communication with RabbitMQ | dev.to | 2025-03-21

🔗 GitHub Repository: https://github.com/agitrubard/contacts-app
itf-example-article-part-v

11 1 1 3.8 Java

Example project for the blog article: Maven Plugin Testing - in a Modern Way - Part V
junit5-before-after-all

12 1 1 4.4 Java

Project that shows how to deal with general pre and postconditions using JUnit5

Project mention: How to simulate real BeforeAll and AfterAll in JUnit 5 | dev.to | 2024-07-05

The https://github.com/eliasnogueira/junit5-before-after-all project shows the implementation based on this article’s explanation matching the diagram in “The example” section.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

Java integration-testing discussion

Java integration-testing related posts

Arquillian 1.7 finally released!

1 project | /r/java | 4 May 2023
Chocotea - A library that generates postman collection and integration tests from java code

1 project | /r/opensource | 20 Jan 2023
Best tool for automated API e2e testing

2 projects | /r/softwaretesting | 27 Oct 2022
Testes integrados com Arquillian e Java

1 project | dev.to | 16 Jun 2021
Maven Plugin Testing - In a Modern way - Part V

3 projects | dev.to | 10 Sep 2020
A note from our sponsor - SaaSHub
www.saashub.com | 22 Apr 2025

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Index

What are some of the best open-source integration-testing projects in Java? This list will help you:

#	Project	Stars
1	Testcontainers	8,191
2	java-dns-cache-manipulator	925
3	GreenMail	664
4	Citrus	465
5	JMockit	463
6	arquillian-core	383
7	maven-it-extension	91
8	bdd-for-all	51
9	chocotea	42
10	contacts-app	9
11	itf-example-article-part-v	1
12	junit5-before-after-all	1