Need more unit tests for your projects in Spring?

Diffblue Cover is an AI-powered tool that automatically creates unit tests for Java code, hundreds of times faster than can be written manually. Diffblue Cover's unit tests help you catch regressions faster and earlier in the software development lifecycle.

Diffblue Cover supports Spring and is available as a CLI tool and a free Community Edition IntelliJ plugin that creates unit tests for Java projects. 


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  • How do I use Diffblue Cover?
    Cover is available as a CLI tool and as a plugin for IntelliJ IDEA. The IntelliJ IDEA Plugin is available for all editions of Diffblue Cover, and can generate tests per method or per class within the IDE. The CLI tool is available for the Teams and Enterprise editions of Diffblue Cover. It works 100% autonomously, configuring itself from your Maven or Gradle environment.
  • What are the benefits of using Diffblue Cover?
    Diffblue Cover creates ready-to-use Java unit tests hundreds of times faster than it would take to write them manually. The CLI tool also provides a speed boost for organizations that are working towards achieving DevOps goals like CI/CD: Since it fits into a CI pipeline, the CLI tool protects the whole codebase from regressions by shifting testing left, helping users detect undesirable changes in the code’s behavior as early as possible.
  • Does Diffblue Cover support test-driven development (TDD)?
    Yes! Cover's tests complement the tests written by people, as part of TDD or otherwise, by giving you back time to spend writing tests for the most critical parts of your codebase.
  • How are Diffblue Cover's tests maintained?
    Cover's regression suites are maintained automatically and updated with each new code version to capture the current behavior of the code.
  • How can I try it on my code? 
    To use the tool yourself for free, you can download the free Community Edition plugin. To try Diffblue Cover's CLI tool on your company's code, sign up for a free trial of DevOps Edition