Scala: Unable to find the resource: /META-INF/BenchmarkList

idea ultimate 14.1.2 + scala plugin 1.4.15 + jmh plugin 1.0.1

I have an sbt project opened in IDEA. When I run one benchmark method or all methods in a class I get this error:

Exception in thread "main" java.lang.RuntimeException: ERROR: Unable to find the resource: /META-INF/BenchmarkList
    at org.openjdk.jmh.runner.AbstractResourceReader.getReaders(AbstractResourceReader.java:96)
    at org.openjdk.jmh.runner.BenchmarkList.find(BenchmarkList.java:104)
    at org.openjdk.jmh.runner.Runner.internalRun(Runner.java:250)
    at org.openjdk.jmh.runner.Runner.run(Runner.java:202)
    at org.openjdk.jmh.Main.main(Main.java:69)

[artyushov]

Hi!

Do you have org.openjdk.jmh:jmh-generator-annprocess on your classpath? If yes, is annotation processing enabled in your IDE? You can find the checkbox under Preferences -> Build, Execution, Deployment -> Compiler -> Annotation Processors

[metamaker]

The solution for me was to use testAnnotationProcessor in Gradle 6 build.gradle:

	testImplementation 'org.openjdk.jmh:jmh-core:1.25'
	testAnnotationProcessor 'org.openjdk.jmh:jmh-generator-annprocess:1.25'

instead of

	testImplementation 'org.openjdk.jmh:jmh-core:1.25'
	testImplementation 'org.openjdk.jmh:jmh-generator-annprocess:1.25'

Mind that my setup is a bit non-standard - I run JMH from JUnit. Still, this solved missing BenchmarkList problem.

Also I don’t use jmh-gradle-plugin, only those two dependencies from above are enough to integrate JMH to JUnit.