Eclipse No tests found using JUnit 5 caused by NoClassDefFoundError for LauncherFactory

Question

The problem

Whenever I run my projects JUnit test (using JUnit 5 with Java 9 and Eclipse Oxygen 1.a) I encounter the problem that eclipse can\'t find any tests.

Answer 1

SIMPLE FIX: (Add JUnit 5 Library)

INSTRUCTIONS:

• Right click on project -> Build Path -> Configure Build Path
• In the pop-up -> Add Library -> JUnit -> JUnit 5 -> Finish -> Apply
• You should see the JUnit 5 Library (and its jars) added to your project
• Right click on project -> Maven -> Update Project -> OK