AbstractMethodError when running test from IntelliJ

[xgouchet]

I'm getting an AbstractMethodError whenever I try to run a test using the icons in the gutter :

Testing started at 20:01 ...
Jun 01, 2017 8:01:22 PM org.junit.platform.launcher.core.ServiceLoaderTestEngineRegistry loadTestEngines
INFO: Discovered TestEngines with IDs: [spek]
Exception in thread "main" java.lang.AbstractMethodError: Method org/jetbrains/spek/engine/Scope$Group.isTest()Z is abstract
	at org.jetbrains.spek.engine.Scope$Group.isTest(Scope.kt)
	at org.junit.platform.engine.TestDescriptor.hasTests(TestDescriptor.java:160)
	at org.junit.platform.launcher.core.Root.lambda$static$0(Root.java:33)
	at org.junit.platform.engine.TestDescriptor.accept(TestDescriptor.java:179)
	at org.junit.platform.engine.TestDescriptor.lambda$accept$0(TestDescriptor.java:181)
	at java.lang.Iterable.forEach(Iterable.java:75)
	at org.junit.platform.engine.TestDescriptor.accept(TestDescriptor.java:181)
	at org.junit.platform.launcher.core.Root.lambda$acceptInAllTestEngines$2(Root.java:85)
	at java.util.LinkedHashMap$LinkedValues.forEach(LinkedHashMap.java:608)
	at org.junit.platform.launcher.core.Root.acceptInAllTestEngines(Root.java:85)
	at org.junit.platform.launcher.core.Root.prune(Root.java:77)
	at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:85)
	at org.jetbrains.spek.tooling.runner.junit.JUnitPlatformSpekRunner.run(JUnitPlatformSpekRunner.kt:107)
	at org.jetbrains.spek.tooling.MainKt.main(Main.kt:58)

The tests run without error when running the junitPlatformTest from gradle.

I'm using :

• IntelliJ 2017.1.3
• Spek Plugin 0.3.4
• Spek library 1.1.2
• JUnit Platform Gradle plugin 1.0.0-M4
• Kotlin version 1.1.2-4

Let me know if you need more information on this issue

[xgouchet]

I found that this was a duplicate of #37 : adding testRuntime "org.junit.platform:junit-platform-launcher:1.0.0-M4" solved this issue for me.