Easy integration testing for Spring WebFlux using Testcontainers

In this story, we’ll cover Integrations testing for the Spring WebFlux application using Testcontainers.

|· Prerequisites
· Overview
∘ What is Testcontainers?
∘ Why use Testcontainers?
· Let’s code
∘ Create a Spring reactive application
∘ Add Testcontainer to project
· Testing
· Conclusion
· References

Prerequisites

This is the list of all the prerequisites:

• Spring Boot 3+
• Maven 3.6.+
• Java 17 or later
• MongoDB instance installed
• Your favorite IDE (IntelliJ IDEA, Eclipse, NetBeans, VS Code)
• A Docker environment supported by Testcontainers

Overview

What is Testcontainers?

Testcontainers is an open-source framework for providing throwaway, lightweight instances of databases, message brokers, web browsers, or just about anything that can run in a Docker container.