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.
I have the same issue with STS 3.9.1. It seems like an Eclipse bug, however, to fix this you can add a test dependency junit-platform-launcher
to your project (https://mvnrepository.com/artifact/org.junit.platform/junit-platform-launcher)
This is how I did for my project which uses gradle:
dependencies {
// other stuff here
testCompile group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: "5.${junit5MinorVersion}"
testCompile group: 'org.junit.platform', name: 'junit-platform-launcher', version: "1.${junit5MinorVersion}"
}
gradle.properties file:
junit5MinorVersion=1.0
I believe the same applies if you see this exception while using IntelliJ IDEA.