Testcontainers offers several initialization strategies for our Docker containers when writing integration tests. Depending on the Docker image we use for our tests, we might have to perform additional setup steps. This includes adjusting the container configuration or populating data. With Testcontainers, we can tweak the container configuration either during runtime (executing commands inside the
MongoDB Testcontainers Setup for @DataMongoTest
MongoDB is one of the NoSQL databases that Spring Boot offers great testing support for. Like all other test slice annotations from Spring Boot, when using @DataMongoTest, we’ll get a Spring Test Context with just enough beans to test any MongoDB-related code. By default, Spring Boot tries to start and use an embedded MongoDB instance.
Testing Spring Boot Applications with Kotlin and Testcontainers
Recently I introduced Testcontainers for a Kotlin based Spring Boot application. I jumped right into the setup and immediately ran into an issue. Even though the interoperability of Java libraries and Kotlin is excellent, there is one thing you need to know when using Testcontainers with Kotlin. Continue reading to understand what it takes to
Reuse Containers With Testcontainers for Fast Integration Tests
Testcontainers is now for almost a year part of my core testing libraries set. It allows you to control Docker containers for external parts of your application (e.g. database or messaging queue). This helps a lot when you write integration tests. The integration of Testcontainers with Spring Boot and JUnit is excellent and they improve
Test Spring Applications Using AWS With Testcontainers and LocalStack
If your Spring application uses AWS components like S3, SNS, or SQS you might wonder how to write effective integration tests. Should I mock the entire interaction with AWS? Should I duplicate the AWS infrastructure for testing? Is there maybe a local AWS clone available? With this blog post, you’ll learn how to write integration
Spring Boot Functional Tests With Selenium and Testcontainers
Ensuring your application is working properly is a critical part of continuous integration and delivery. Unit tests help you to test your methods’ business logic for both normal & edge cases. When it comes to guaranteeing that your users can correctly work with your application, we need something different. If your application exposes a frontend
Jakarta EE Integration Tests With MicroShed Testing
Integration tests for your Jakarta EE application are essential. Testing the application in a full setup will ensure all of your components can work together. The Testcontainers project provides a great approach to use Docker containers for such tests. With MicroShed Testing you get a convenient way to use Testcontainers for writing integration tests for your
Write Spring Boot Integration Tests With Testcontainers (JUnit 4 & 5)
Recently, I was looking for a solution to write integration tests for my Spring Boot-based application which was using PostgreSQL. I had the following requirements for this task: The integration tests should use the same database as in production (referring to the Twelve-Factor App I wanted to keep my environment during the tests as similar as
