java.lang.NoSuchMethodError: org.junit.platform.commons.util.Preconditions.notNull

When running tests, get this:

Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.commons.util.Preconditions.notNull([Ljava/lang/Object;Ljava/lang/String;)[Ljava/lang/Object;
	at org.junit.platform.launcher.core.DefaultLauncher.registerTestExecutionListeners(DefaultLauncher.java:71)
	at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:37)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:262)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

Any idea?

[mannodermaus]

Okay, AS 2.3.3 is most likely the culprit here. The blog post you linked to at the top of this issue described how IJ 2016.x is compiled against an older milestone of JUnit 5. I’m pretty certain that this affects AS 2.3 as well. I don’t know the version of IntelliJ it’s built against, but I’m fairly certain that it’s not a 2017 build.

So for the time being, I’m afraid you either need to update your AS to a more recent version, or wait until the next stable build & use the Gradle task for unit tests until then…

[ivanschuetz]

After reading this, I added this to my dependencies:

compile "org.junit.platform:junit-platform-launcher:1.0.0-M4"

But now I get:

Exception in thread "main" java.lang.NoSuchMethodError: org.junit.platform.engine.discovery.DiscoverySelectors.selectNames(Ljava/util/Collection;)Ljava/util/List;
	at com.intellij.junit5.JUnit5TestRunnerUtil.buildRequest(JUnit5TestRunnerUtil.java:75)
	at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:39)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:262)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

According to https://github.com/junit-team/junit5/issues/586 this is related with using an incompatible launcher version…? But it passed Gradle check at least, I tried first with M3 and Gradle didn’t let me.