how do i express this in gradle script kotlin

compileTestGroovy.dependsOn compileTestKotlin
compileTestGroovy.classpath += files(compileTestKotlin.destinationDir)
testClasses.dependsOn compileTestGroovy

compileTestGroovy

and testClasses are tasks, so you should use corresponding kotlin dsl api for that

The task might have an accessor already generated or not depending on how the plugin is applied and it will be generated as an extension of type

TaskProvider<T>

on

TaskContainer

so in your

build.gradle.kts

tasks {

  val compileTestKotlin by existing(KotlinCompile::class)

  compileTestGroovy.get().dependsOn(compileTestKotlin)
  compileTestGroovy.get().classpath += files(compileTestKotlin.get().destinationDir)
testClasses.get().dependsOn(compileTestGroovy)
}

Unfortunately the generated accessor for

compileTestKotlin

is generated with a wrong task type of `Any`and this will not work without you adding the first line and explicitly supplying the

KotlinCompile

type. If you want to do this the recommended Gradle way (ie with lazy configuration) use configuration blocks on the task providers

tasks {
  val compileTestKotlin by existing(KotlinCompile::class)

  compileTestGroovy {
    dependsOn(compileTestKotlin)
    classpath += files(compileTestKotlin.get().destinationDir)
  }

  testClasses {
    dependsOn(compileTestGroovy)
  }
}

Thanks, let me try that

The task might have an accessor already generated or not depending on how the plugin is applied

Correct. And official docs (which I sent above) are really good and explain this thing

I got it to work, but it was not related to this, the groovy plugin was not applied because of an error in out gradle plugin.