Testcontainers spring boot

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Testcontainers spring boot

See my updated example at. At the last ng-be conference I saw a demo of Cypress. Cypress allows to do functional testing of your web application, quite similar to Selenium for example, but still quite different. Ever since that time, I wanted to try it out, but never got around to it until this week. After that unzip cypress. In cypress.

By default, Spring Boot will run on localhost at portso our configuration should look like this:. In the index.

The commands. The index. Finally, the spec. The first part with the uncaught:exception thing is there because otherwise Cypress would already fail at startup, for reasons that are unclear to me.

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Try if it works for your application without it by all means. One test asserts that if somebody tries to access the home page, he will be redirected to the login page. To run these tests in the desktop application of Cypress, you just need to do these simple steps:.

If you now edit your spec. Cypress recently published Docker images for its tool. We can use those with Testcontainers so that we can start the Cypress test from inside a JUnit test with TestContainers. With that, we have the full application running in a well known state, and it makes it easy to run the Cypress tests as part of the Maven build.

Override the baseUrl that is defined in cypress. As the SpringBootTest will run our application at a random port, we need to inject that port into our test:. To make it possible for the Cypress docker image started by Testcontainers to communicate with out application started by Spring Boot, we need to add this line at the start of our test:.

Adding this line allows the Docker container to access the host via host. With Testcontainers, you can put a directory that is on the classpath mounted as a volume in the docker container.

If we now just start the GenericContainer in our unit test, it will start but immediately stop before any tests are run. After that, I know all tests have been run. Just run mvn test and the CypressIntegrationTest will be done as part of the build. It is perfectly possible to running Cypress tests as part of a Maven build for a Spring Boot application that uses Thymeleaf for server side rendering.

Testcontainers make it quite easy and straightforward. Wim Deblauwe.If you are writing services using spring boot and maybe spring cloud and you do medium sized tests during build process, then this set of spring boot auto-configurations might be handy. Docker and TestContainers are used to bootstrap stateful service using spring cloud bootstrap phase. Usage of spring cloud in your production code is optional, but you will need it in tests. See "how to" below. Containers for embedded-kafka and embedded-zookeper bind their volumes to host filesystem.

Testing Spring Boot applications with TestContainers

By default, to your projects target folder. You can configure binding using properties:. To auto-configure spring-data-mongodb use these properties in your test application. To auto-configure spring-cloud-gcp-starter-pubsub use these properties in your test application.

To configure for example the keycloak-spring-boot-starter use these properties in your test application. There is currently no starter library for using InfluxDB server version 1.

You can anyway create your own properties using those values for example in your test application.Note: Some time has passed since writing this post, once read it maybe worth visiting the Testing Spring Boot applications with TestContainers revisted post that details some revisions for later versions of Spring Boot and JUnit 5.

In this first part, we are going to concentrate on using the TestContainers database support to ensure that our Flyway scripts and Spring Data JPA configuration are integrated correctly. We will be using the testcontainers-demo application as the System under test SUT.

testcontainers spring boot

This application also provides a web interface to see a list of all the messages that are routed by the application. Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container. Any other database type that can be containerized can also be used.

Application integration tests : for running your application in a short-lived test mode with dependencies, such as databases, message queues or web servers. Each test can get a fresh instance of the browser, with no browser state, plugin variations or automated browser upgrades to worry about.

And you get a video recording of each test session, or just each session where tests failed. As we are only looking at the data layer in this post, we can make use of the Spring Boot Auto-configured tests feature. This is normally applied when the application starts up as part of the Spring Boot support for Flyway scripts.

By using only an inmemory database we are not validating the Flyway script or that the Flyway script and JPA annotated entities are being kept in sync. We want to use TestContainers to start up a Postgres database, allow Spring Boot to apply the Flyway script, then test our NotificationRepository is configured correctly and can talk to a running instance of Postgres using JUnit tests.

At this point the test will fail because an embedded database cannot be found on the classpath. The next step is to use the AutoConfigureTestDatabase annotation to configure the JUnit test to not replace the application database configuration.

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The tests will now be picking up your application database configuration which will likely be pointing to your local development environment. So next steps are to introduce the PostgresContainer from the TestContainers project. This configuration now loads up a Postgres container in Docker at the start of the test. This can be configured per test if required.

However, Spring Boot has not been configured to point to this running database yet. This requires a little more configuration of the JUnit test. Adding a ConfigFileApplicationContextInitializer to the test will allow us to inject some new environment variables into the test context that will point the application code at the running docker environment.

This code allows us to get a handle on the container configuration and override the spring boot properties, in doing so that test will now apply the flyway script to our containerised database and the jpa code is connected.February 3, October 28, July 15, January 7, March 30, March 9, January 20, September 16, September 9, July 28, July 26, July 12, July 6, December 21, November 30, November 4, February 24, December 12, October 12, February 10, November 16, November 11, January 10, August 26, January 31, December 8, May 26, May 12, April 13, In the last weeks, I was looking for a solution to write integration tests for my Spring Data based application which was using a Postgres database.

I had the following requirements for this task:. The project describes itself as the following:. With this project, you can use a ClassRule or Rule on each of your integration tests and define the Docker image for your test. Overriding the properties for your application during the tests is as easy as the following snippet:.

Adding the Sql annotation to a test method you can execute further SQL scripts before your tests and add e. These changes will get rolled back after your test method exists. I created three integration test classes s definitely not a best practice for your enterprise project for creating, reading and deleting an entity to show you the parallel execution of the tests. Currently, I am working for ImmobilienScout24 and provide real estate data for the platform using Java and Spring.If you are writing services using spring boot and maybe spring cloud and you do medium sized tests during build process, then this set of spring boot auto-configurations might be handy.

Docker and TestContainers are used to bootstrap stateful service using spring cloud bootstrap phase. Usage of spring cloud in your production code is optional, but you will need it in tests. See "how to" below. Containers for embedded-kafka and embedded-zookeper bind their volumes to host filesystem.

By default, to your projects target folder.

testcontainers spring boot

You can configure binding using properties:. To auto-configure spring-data-mongodb use these properties in your test application. To auto-configure spring-cloud-gcp-starter-pubsub use these properties in your test application. To configure for example the keycloak-spring-boot-starter use these properties in your test application. There is currently no starter library for using InfluxDB server version 1.

You can anyway create your own properties using those values for example in your test application. To auto-configure spring-cloud-vault-config use these properties in your test bootstrap.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

If you are writing services using spring boot and maybe spring cloud and you do medium sized tests during build process, then this set of spring boot auto-configurations might be handy.

Docker and TestContainers are used to bootstrap stateful service using spring cloud bootstrap phase.

Testcontainers and Spring Boot

Usage of spring cloud in your production code is optional, but you will need it in tests. See "how to" below. Containers for embedded-kafka and embedded-zookeper bind their volumes to host filesystem.

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By default, to your projects target folder. You can configure binding using properties:. To auto-configure spring-data-mongodb use these properties in your test application. To auto-configure spring-cloud-gcp-starter-pubsub use these properties in your test application.

To configure for example the keycloak-spring-boot-starter use these properties in your test application. There is currently no starter library for using InfluxDB server version 1.

You can anyway create your own properties using those values for example in your test application.

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Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Container auto-configurations for spring-boot based integration tests. Java Branch: develop.

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Instantiating TestContainers only once across all tests - 'Singleton Pattern' - Preview - Docker

Latest commit.We will cover here how to do DAO integration test when you have spring boot application with PostgreSQL DB and liquibase for schema versioninglast time we have explained how to do the same without liquibase using embedded PostgreSQL in this post but this time we will do the same but using docker with test containers which will apply your liquibase changes and making sure you DAO integration test has the same environment as production database environment if you are using docker for your data base in production.

The whole code example is on Github. Beside spring boot starter dependencies we will need to add liquibase and test containers dependencieswhole maven pom file can be viewed in Github code.

testcontainers spring boot

Your liquibase database simple master configuration will be in your resources source set which will create simple customer table with file name changelog-master. We will highlight the important sectionsthe whole configuration java file can be viewed into the github code : DbConfig. Do not forget to disable hibernate DDL generation in hibernate properties as you can see in the Dbconfig:. Now how how we can trigger the DAO integration test and use that configuration in practice :. Where when you run the test from your IDEAyou should see the spring boot application is started properly and the docker image of the postgreSQL is started with liquibase changes applied so you can trigger your DAO integration test a production like situation.

The PostgreSQL docker image startingoff-course you need docker kernel installed in our machine to be able to test the same :. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Primary Menu Home About. Search Search for:.

Maven dependencies : Beside spring boot starter dependencies we will need to add liquibase and test containers dependencieswhole maven pom file can be viewed in Github code. Share this: Twitter Facebook.

Implementing Integration Tests Using Testcontainers

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