In 2024, we all agree that testing our applications is essential. We write unit tests without any trouble, but what about integration tests? How can we test the different services we use in our Spring applications in a safe and reliable way? Testcontainers integrates seamlessly and transparently with Spring Boot to offer a unit testing-like experience, but with integration tests that use real services running in containers: Kafka, Postgresql, MySql, Elasticsearch, and anything else that can be run in Docker. In this talk, you will learn how to use Testcontainers in your Spring Boot tests without compromising the speed of your development cycle and leveraging all the potential it offers

1. Spring Boot
Testcontainers
Iván López (@ilopmar)

2. ● Iván López (@ilopmar)
● JVM developer
● Staff Software Engineer at VMware
● @MadridGUG coordinator
● Speaker: GeeCon, CommitConf, Devoxx,
RigaDevDays, Codemotion, Spring IO,...
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About me

3. @ilopmar
How do we test?
Unit tests
Integration
tests
E2E
Integration
Impl.
detail
Implemented

4. @ilopmar
Options
●
Shared instances
●
Install locally
●
In-memory implementations (H2,...)

5. @ilopmar
XXXXXXXXXXXXXX

6. @ilopmar
Testcontainer Java
●
Created ~9 years ago (Docker is ~11)
●
Original implementation in Java: Go, .NET,
Python, NodeJS, Rust, Haskell, Scala)
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Uses Docker Java API
●
Runs in any Docker-compatible environment
●
Integration with framework/libraries: Spring,
JUnit, Spock...

7. @ilopmar
Modules

8. Talk is cheap,
show me the code

9. @ilopmar
Demo

10. @ilopmar
Demo

11. @ilopmar
Demo

12. @ilopmar
Demo

13. Thanks!
Questions?
@ilopmar
lopez.ivan@gmail.com
https:/
/github.com/ilopmar
Iván López
https://bit.ly/cern-sb-tc