Best Test Automation Frameworks for JUnit

Writing unit tests can be difficult and sometimes, good design must be sacrificed in order to ensure testability. Sometimes testability is synonymous with good design. However, this is not always true. Final classes and methods can't be used, private methods may need to be protected, or unnecessarily transferred to a collaborator. Static methods should be avoided entirely due to the limitations of existing frameworks. PowerMock is a framework which extends other mock libraries like EasyMock with greater capabilities. PowerMock employs a custom classloader, bytecode manipulation, and allows mocking of static methods and constructors. Private methods can also be used, as well as removal of static initializers. A custom classloader is not required to be modified to the IDE or continuous Integration Servers. This simplifies adoption.

Mocking is a method to make testing code more readable and manageable. In the following articles, I will explain the features, quirks, and basics of the MockK library. It is an open-source library (github repositories) that aims to make mocking in Kotlin great. Injection matches properties first by name, then by superclass or class. For customization, check the lookupType parameter. Even if the private option is used, properties are still injected. The greatest number of arguments is considered to be the most important.

OpenTest is an open-source functional test automation framework that can be used to test web apps, mobile apps, and APIs. It is free and open-source. OpenTest focuses on mainstream automation practices and scalability. OpenTest is a feature-reach tool which requires very little to no programming skills and can handle almost any type of functional testing automation project. Keywords are high-level building blocks that hide the complexity of the technology and allow you to create concise, readable, and maintainable tests. No programming skills are required. Run multiple test sessions simultaneously, with only limited hardware resources. Once you have exhausted your local machine(s), you can spin up additional test actors in the cloud. To cover more complex scenarios, JavaScript code can be embedded naturally anywhere in your keyword-driven test. You can run multiple tests over the same set of data records.

Serenity BDD makes it easier to write automated acceptance and regression test scripts that are more manageable and easy to maintain. Serenity BDD also uses test results to create illustrated, narrative reports that describe and document your application's functionality and operation. Serenity will tell you not only which tests were executed but also what requirements were tested. Serenity BDD has the advantage that you don't have to spend time building and maintaining your automation framework. Serenity's goal is to make it simple to quickly create well-structured and maintainable automated acceptance criteria using your favorite BDD or traditional testing library. You can work with Behaviour-Driven-Development tools like Cucumber or JBehave, or simply use JUnit. You can integrate with requirements stored outside (such as JIRA, or any other test case management tool), or use a simple directory-based approach for organizing your requirements.

Spock is a specification and testing framework for Java and Groovy apps. Its beautiful and expressive specification language is what makes it stand out among the rest. Spock can be used with all IDEs, build tools and continuous integration servers thanks to its JUnit runner. Spock was inspired by JUnit, RSpec and jMock. Spock Web Console allows you to view, edit, run and publish Spock specifications instantly. It's the ideal place to play with Spock without any commitments.

HUnit is a Haskell unit testing framework that was inspired by the JUnit Java tool. HUnit is easy to use if you are familiar enough with Haskell but not necessarily JUnit. Test-centered software development is more effective when tests are simple to create, modify, and execute. JUnit was the first tool to support test-first Java development. HUnit is a translation of JUnit to Haskell. This is a general-purpose, functional programming language. HUnit is similar to JUnit in that you can create tests, name them and group them into suites. The framework will automatically check the results. Because of the Haskell language, HUnit's test specification is more concise and flexible that JUnit. HUnit currently only has a text-based controller, but the framework can be easily extended. Run the tests in a group.