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Primer Course

About the Primer

main branch: Build & Test Maven Project (main)

This is the source code for the Primer online course, you'll find the source code for the Masterclass here.

Introduction

The Testing Spring Boot Applications Primer is a beginner-friendly course on testing your Spring Boot applications. You'll learn how to effectively write unit, integration, and end-to-end tests while utilizing Spring Boot's excellent test support.

  • Guided Introduction For Testing Real-World Spring Boot Applications
  • 15 Course Lessons Covering Unit, Integration and End-to-End Testing
  • 12 Hands-On Exercises Including a Final Assessment

TL;DR:

  • Getting started with testing Spring Boot applications
  • Learn more about the spring-boot-starter-test dependency
  • Write your first unit, integration and end-to-end test
  • Get familiar with common Java testing libraries: JUnit 5, Mockito, Testcontainers, Selenium, etc.

Enroll here for the Testing Spring Boot Applications Primer Online Course.

Further Resources and Links

Local Project Setup

Requirements

Mandatory requirements:

  • Java 21 (JDK flavour (OpenJDK/Azul/Oracle) does not matter). For the correct Java version setup I can recommend JEnv (Mac/Linux) and the Maven Toolchains Plugin (Windows)
$ java -version
openjdk version "21.0.2" 2024-01-16 LTS
OpenJDK Runtime Environment Temurin-21.0.2+13 (build 21.0.2+13-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.2+13 (build 21.0.2+13-LTS, mixed mode)
  • Docker Engine (Community Edition is enough):
$ docker version
Client: Docker Engine - Community
 Version:           20.10.6
 API version:       1.41
 Go version:        go1.13.15
 Git commit:        370c289
 Built:             Fri Apr  9 22:47:17 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          20.10.6
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       8728dd2
  Built:            Fri Apr  9 22:45:28 2021
  OS/Arch:          linux/amd64
  Experimental:     false

Optional requirements:

  • Maven >= 3.6 (the project also includes the Maven Wrapper).

When using Maven from the command line, make sure ./mvnw -version reports the correct Java version:

$ ./mvnw -version

Apache Maven 3.8.4 (9b656c72d54e5bacbed989b64718c159fe39b537)
Maven home: /home/rieckpil/.m2/wrapper/dists/apache-maven-3.8.4-bin/52ccbt68d252mdldqsfsn03jlf/apache-maven-3.8.4
Java version: 17.0.1, vendor: Eclipse Adoptium, runtime: /usr/lib/jvm/jdk-17.0.1+12
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.4.0-92-generic", arch: "amd64", family: "unix"
  • IntelliJ IDEA or any IDE/Code Editor (Eclipse, NetBeans, Code, Atom, etc.)