Workshop Testcontainers

A presentation at Workshop Testcontainers with Spring Boot in April 2023 in Utrecht, Netherlands by Bas Stoker

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Schedule • Current state of testing • Testcontainers •🧪 Lab 1 •🧪 Lab 2 •🧪 Lab 3 introduction

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Your test is called what?!

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https://martinfowler.com/bliki/TestPyramid.html

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https://martinfowler.com/bliki/TestPyramid.html

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“Write tests. Not too many. Mostly integration.” https://kentcdodds.com/blog/write-tests

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“You’re probably mocking too much.” https://medium.com/extreme-programming/testsdependencies-65f592a46529

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Testcontainers

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Testcontainers Docker

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“Docker is a great abstraction”

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🧪 Our Demo App • Java • Uses • Uses 17 & Spring boot a database (PostgreSQL) Keycloak for authentication • There is frontend available • Available as a Docker Image purposes for demo

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🧪 Lab 1. • Goal: run the app • App consists of 4 • Database • Keycloak • Backend • User Interface manually (using Docker) parts:

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🧪Lab 1.

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🧪Lab 1.

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🧪Lab 1.

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🧪Lab 1.

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🧪Lab 1.

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Food :-)

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🧪 Lab 2. • Goal: Test database access layer • Using JUnit test lifecycle • Using PostgreSQL Testcontainer • Using Spring Injection of properties dynamically