Cannot run single test when using with Kotest 4.2.0.RC2

When I run a single test (“first test” in my code example) withing a test class using the green Run test in the gutter, the test fails with “java.lang.NoClassDefFoundError: io/kotest/core/filters/TestCaseFilter” exception. Running all tests withing test class (using the double Run button in the gutter at the class declaration line) works fine.

Code example:

import io.kotest.core.spec.style.StringSpec
import io.kotest.matchers.shouldBe

class TestMyClass : StringSpec({
    "first test" {
        2 * 2 shouldBe 4
    }
})

Stack trace:

Exception in thread "main" java.lang.NoClassDefFoundError: io/kotest/core/filters/TestCaseFilter
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151)
	at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:821)
	at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:719)
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:642)
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:600)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	at io.kotest.launcher.ExecuteTestsKt.executeTests(executeTests.kt:37)
	at io.kotest.launcher.Execute.run(launcher.kt:71)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:168)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:16)
	at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:258)
	at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:255)
	at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:273)
	at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:298)
	at io.kotest.launcher.LauncherKt.main(launcher.kt:14)
Caused by: java.lang.ClassNotFoundException: io.kotest.core.filters.TestCaseFilter
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	... 18 more

Environment:

• Plugin version: 1.1.9-IC-2020.1
• IntelliJ IDEA 2020.2 Ultimate Edition
• Kotest 4.2.0.RC2
• OpenJDK 14.0.2

[Ultranium]

Kotest 4.2.0 final has been released so upgrade to that. And there is a kotest plugin update pending approval at jetbrains which will fix this issue, so once that gets released (today hopefully), you should be all set.

Today I got the plugin update (not it’s v. 1.1.11-IC-2020.1), switched to the final version 4.2.0 Things got even worse - now I can’t run even all tests in the class using the gutter button - I get this error message:

Error: Unable to initialize main class io.kotest.launcher.LauncherKt
Caused by: java.lang.NoClassDefFoundError: io/kotest/core/engine/TestEngineListener

After reverting the Kotest version back to 4.2.0.RC2 with the latest plugin, it works as before - running all tests cases withing a class works, running a single test does not.

I created a repo with a minimal project to demonstrate this behavior - https://github.com/Ultranium/kotest-idea-plugin-bug It contains only a single test class in the file src/test/kotlin/TestMyClass.kt.

[rkim-branch]

I am having similar variation of problem.

Exception in thread "main" java.lang.NoSuchMethodError: com.github.ajalt.clikt.parameters.options.OptionWithValuesKt.option$default(Lcom/github/ajalt/clikt/core/ParameterHolder;[Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;ZLjava/lang/String;Lkotlin/text/Regex;Ljava/util/Map;Lcom/github/ajalt/clikt/completion/CompletionCandidates;ILjava/lang/Object;)Lcom/github/ajalt/clikt/parameters/options/OptionWithValues;
	at io.kotest.engine.launcher.Execute.<init>(main.kt:34)
	at io.kotest.engine.launcher.MainKt.main(main.kt:24)

It used to work fine, until I have upgrade clikt to 3.x from 2.x. As kotest-framework depends on clikt@2.x, IntelliJ plugin was not able to find matching bytecode symbol from 3.x jar.