[dev2next] - Test-Driven Development: It's easier than you think!

Everyone loves writing tests, don’t they? How do you write good tests? What tools are available for you to write good tests?

In this session, I will dive into the many features of Quarkus that help developers write good tests. I will highlight some of the features of Quarkus, Dev Services and Continuous Testing, which help make testing easier. Additionally, I will live code some tests for common use cases developers encounter, including unit, integration, and “black box” testing of imperative and reactive RESTful and event-driven applications that use common services, such as databases and Kafka brokers. I will discuss techniques such as mocking, spying, and interaction-based testing/verification.

I'll even spend some time showing how IDE-based AI assistants can help!

Once you see how easy TDD really can be there isn't a reason to not do it!

Transcript

1. It’s easier than you think! Eric Deandrea Sr. Principal Software Engineer Test-Driven Development
2. @edeandrea Who am I? ▸ Java Champion ▸ 26+ years software development experience ▸ Contributor to Open Source projects ･ Quarkus ･ LangChain4j & Quarkus LangChain4j ･ Spring Boot, Spring Framework, Spring Security ･ Wiremock ･ Microcks ▸ Boston Java Users ACM Chapter Vice Chair & Board Member ▸ Published Author
3. @edeandrea • Showcase & explain Quarkus, how it enables modern Java development & the Kubernetes-native experience • Introduce familiar Spring concepts, constructs, & conventions and how they map to Quarkus • Equivalent code examples between Quarkus and Spring as well as emphasis on testing patterns & practices https://red.ht/quarkus-spring-devs
4. @edeandrea Why are we here today?
15. https://x.com/holly_cummins/status/1788138252572004441
17. @edeandrea But first, some basics
18. @edeandrea end-to-end tests unit tests integration tests low effort high realism high value
19. @edeandrea end-to-end tests unit tests integration tests low effort high realism tests with application server test REST endpoints tests with a database
20. @edeandrea Today’s challenge
21. @edeandrea HTTP (REST) adoptions topic adoption-requests topic Get / Persist pet info https://bit.ly/tdd-easy
22. https://bit.ly/tdd-easy
24. @edeandrea Additional resources
25. @edeandrea https://github.com/quarkusio/quarkus-super-heroes Quarkus Superheroes
26. linkedin.com/in/edeandrea github.com/edeandrea bsky.app/profile/ericdeandrea.dev x.com/edeandrea Thank you!