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

Using STS 3.9.1 I got the same problem. However, currently I do not require any new JUnit5 features, so I tried to force using an older version. If using maven, you can add following dependencies to your pom.xml:

    org.junit.platform
    junit-platform-launcher
    ${junit.platform.version}
    test



    org.junit.jupiter
    junit-jupiter-engine
    ${junit.jupiter.version}
    test



    org.junit.vintage
    junit-vintage-engine
    ${junit.vintage.version}
    test

This did the trick for me (at least as long as I do not need JUnit5 explicitly).