Issue
Tests are written in junit5. Even when Run As-> 'Run Configurations' -> "Test runner:" = junits5, eclipse not able to run the tests with junit5 runner.
Root Cause
Eclipse Profile for junit5 not configured in core/pom.xml.
Resolution
The key is to add and use a maven profile to solve the Eclipse Case.
It assumes you have defined a property junit5.version in your parent pom like:
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<junit5.version>5.1.1</junit5.version>
</properties>
then in the profiles section add the following:
<profiles>
<profile>
<id>eclipse</id>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-launcher</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit5.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-launcher</artifactId>
<version>1.1.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</dependencyManagement>
</profile>
</profiles>
All you have to do after this is to select the profile in your local Eclipse: Right click on your project and select Maven > Select Maven Profiles... (or hit Ctrl + Alt + P), and then check the "eclipse" profile we just created.
With that you are done. Your Eclipse will run Junit 5 tests as expected, but the configuration you added won't pollute other builds or other IDE
