If you have not done unit testing, you should not consider your code production-ready. Unit testing is the developer’s responsibility to complete before they ship the code for other white-box testing. There are many frameworks and tools available in the market. I have listed some of the Java unit testing frameworks and tools. Please feel free to comment on which one you are using and your opinion about that.

JUnit is one of the famous Java testing framework written by Erich Gamma and Kent Beck. It is a regression testing framework. Junit helps the developer write test cases, so-called white box testing because the programmer knows the code and can quickly write test cases using jUnit. Using class inheritance, developers can easily automate the testing.

Cactus is a simple test framework based on the JUnit framework for unit testing with server-side Java code. The Cactus framework’s primary goal is to use unit testing server-side Java Servlet objects such as HttpServletRequest, HttpServletResponse, HttpSession.

StrutsTestCase is the extension of the Junit TestCase class that provides code based on the Struts framework tests. StrutsTestCase provides both Mock objects and Cactus methods used to run the Struts ActionServlet. You can run the servlet engine to test. StrutsTestCase uses the ActionServlet controller to test your code.

You can test the Action object’s implementation, test mappings, and forwards declarations. StrutsTestCase does not start the servlet container to test your Struts application, but it mocks the object, different from the EasyMock. EasyMock provides the API for creating Mock objects, while StrutsTest is dedicated to testing the Mock Object.

JFCUnit enables you to write test cases for the offset Java applications. It is obtained from the code used to open the window and work at the component level. It provides a unit test for thread programming.

TestNG is based on building a testing framework JUnit and NUnit, TestNG adds many new features that make it more powerful and easier to use, such as:

Support for JSR 175 annotations (JDK 1.4 JavaDoc comments are also supported)

Flexible Test configuration

Support for runtime and logging by default JDK functions

Powerful execution model (no more TestSuite)

Support for an independent test method.

JMock is a framework based on TDD, test Java code using mock objects. JMock has the following features: easy to expand, lets you quickly and easily define mock objects, allows you to specify the interactions between your objects precisely.

The grinder is an open-source Java load-testing framework. It is distributed through many load injector.

Support for performing test scripts Jython scripting engine

HTTP tests can be managed through the HTTP proxy.

Jetif is a regression testing framework with a pure Java implementation. It is unit tests, and functional tests for Java programs provide a scalable and straightforward code to test for personal development or enterprise-level development. It is easy to use, powerful, and has several essential features for the enterprise-level test.

Jetif from JUnit, inspired by JTestCase and TestNG, has a few basic concepts taken directly from the JUnit, assertion mechanism Test Listener concept, therefore transferring from JUnit to Jetif is very easy.

Unitils is Java open-source class Pack designed to make the unit test easier and maintainable. Unitils built on DBUnit and EasyMock project and integrated with JUnit and TestNG.

Support for database testing, using mock objects, and offers integration with Spring and Hibernate. Unitils is designed with a highly configurable and loosely-coupled way to add these services to the unit test.

P-unit is an open-source performance testing framework different from JUnit. JUnit tests the correctness of the code while p-unit not only test code but also checks the test’s performance.

p-unit records the test case’s memory consumption and can generate a PDF or image format report of the test. P-unit also supports parameterized tests, multithreaded testing, and performance comparisons between different Java virtual machines.

XMLUnit provides two JUnit extension classes XMLAssert and XMLTestCase, and classes that support jUnit. These classes can be used to compare the differences between two XML, display XML using XSLT, and validate XML. You can evaluate XPath expression value in the XML, traverse a node in XML Lee DOM, etc.

Ejb3Unit is used outside the container for the EJB3 entity (Entity) and session (Session). Ejb3Unit is a JUnit extension for all JEE or EJB3 projects and create automated standalone JUnit tests. EJb3Unit uses a built-in database of memory by default, but you can also specify your database.

FEST-Swing is a Java Swing GUI application functionality tests. It is an open-source class library with user interaction (mouse and keyboard input). It supports most of the Swing components in the JDK.

Provides simple, powerful API for creating and maintaining GUI functional tests. It supports HTML embed screenshots of failed GUI tests in the test report. It can be used with JUnit or TestNG.

Ripplet is a powerful, highly reliable, flexible load/stress testing tool. Its features include: support for graphic design and can have a clear summary of the load test description. It can effectively control the practical performance load, including logic and data flow. Peak makes it easy to diagnose performance bottlenecks.

Quickly and accurately assess the actual system under pressure. Allows developers to develop implementation in a live production environment for testing product and produces test reports.

Feed4JUnit – JUnit Parameterized Test

Feed4JUnit can write JUnit parameterized test and provides predefined or random dummy data for these tests. It can create a nice CSV or excel file for the report. Use Feed4JUnit to efficiently perform a smoke test with random checksum data to improve code coverage. Besides, Feed4JUnit can be used to define the equivalence class testing easily.

Jubula provides a testing framework for Swing, SWT/RCP/GEF, and HTML application for automated functional testing of graphical tools. It is suitable for those who want to automate the test. It does not require any coding. Support based on Client-Server architecture for the distributed test. Items stored in a multi-user database.

JsTestDriver is a JavaScript unit testing tool for easy integration with continuous build systems and can run the test on multiple browsers to quickly implement test-driven development.

Citrus is a testing framework for Java development, Enterprise SOA applications based on automated integration testing messages. Use case testing for Terminal to Terminal. This tool can mimic peripheral systems and agreements with various conveyors (JMS, SOAP WebServices, HTTP, TCP/IP, etc.).

JBehave is a behavior-driven development (BDD: Behaviour-Driven Development) framework. Behavior-driven development (BDD) is a test-driven development (TDD), and the evolution of the acceptance of test-driven design makes these practices more accessible and intuitive.

Some property description of this framework:

Support for Maven and Ant integration

Support IDE integration, support in order to run Junit tests

Support internationalization can be written in a different language system

Supports a variety of configurations, Spring configuration, Java Annotation-based configuration, code embedded configuration

Citrus provides robust verification mechanisms for XML message content. It allows you to build complex testing logic such as send and receive messages, data validation, automatic retries, variable definitions, dynamic news content, error simulations.

JBehave is a behavior-driven development (BDD: Behaviour-Driven Development) framework. Behavior-driven development (BDD) is a test-driven development (TDD), and the evolution of the acceptance of test-driven design makes these practices more accessible and intuitive.

Some property description of this framework:

Support for Maven and Ant integration

Support IDE integration, support in order to run Junit tests

Support internationalization can be written in a different language system

Supports a variety of configurations, Spring configuration, Java Annotation-based configuration, code embedded configuration

JCrawler is an open-source Web application stress test tool. By its name, you can tell this is a tool like a Web crawler written in Java. As long as you give several of its URL, it can start to climb over. It is a unique way to create your Web application load. This tool can be used to test your site search engine-load.

Some more Java Unit testing Framework

Cassandra unit testing CassandraUnit

Cassandra Unit is a Cassandra data operations unit testing framework. It is

similar to relational DBunit database testing framework: https://github.com/jsevellec/c…

XTest – NetBeans IDE Ant Based

XTest is a new testing framework. It was primarily developed for NetBeans IDE. However, it can also be used to test other Java products independently. XTest is Ant-based, which means that it allows users to use all the Ant tasks.

UISpec4J – Java Swing Testing

It is dedicated to Swing, an open-source component unit tests, it is built on JUnit based test suite. UISpec4J makes Java GUI testing very simple.

iValidator – XML based Testing Framework

iValidator is a program based on the XML framework for automated testing and integration testing in a complex environment. Its features include: unit test reusability, separation of code and data, offers an Eclipse plugin that supports all test levels.

Lattu – Testing Framework for Eclipse

Lattu is a framework for testing Eclipse RCP applications. It is capable of both unit tests and functional tests.

MockCentral – Mocking Object

MockCentral provides a new way to use mock objects to test. Beyond its mock objects defined in your test code, it allows developers to create XML files and access these mock objects, making test cases simple.

JEasyTest – Eclipse IDE Plugin for Mocking

JEasyTest is an Eclipse IDE plugin mock object frameworks to simplify using standard unit test code, such as the use of inheritance.

Jacareto – Capture Playback tool

Jacareto is a capture and playback tools. It allows you to capture the action in your application (like macros). Jacareto can be used for GUI testing, creating a vivid demonstration and analysis of customer behavior.

Thread Weaver – Multithreading Unit Testing in Java

Thread Weaver is a Java framework for writing multithreaded unit tests. It provides a mechanism for creating a breakpoint in your code. When you reach a breakpoint, it stops the thread execution.

While other threads will continue to run. This allows you to write repeatable tests to check the competition and thread-safe.