Separate Gradle source set for integration tests using Kotlin DSL - gradle

Question

I'm working on a Spring Boot application implemented in Kotlin, and would like to migrate the Gradle build to use the Gradle Kotlin DSL.
The one thing I cannot figure out is how to set up a separate source set and task for my integration tests.
My source tree looks like this:
src
├── integrationTest
│ ├── kotlin
│ └── resources
├── main
│ ├── kotlin
│ └── resources
└── test
├── kotlin
└── resources
And the source set and task are set up like this with Gradle's Groovy DSL:
// build.gradle
sourceSets {
integrationTest {
kotlin {
compileClasspath += sourceSets.main.output + configurations.testRuntimeClasspath
runtimeClasspath += output + compileClasspath
}
}
}
configurations {
integrationTestCompile.extendsFrom testCompile
integrationTestRuntime.extendsFrom testRuntime
}
task integrationTest(type: Test, dependsOn: []) {
testClassesDirs = sourceSets.integrationTest.output.classesDirs
classpath = sourceSets.integrationTest.runtimeClasspath
}
I've found many examples for using the Gradle Kotlin DSL, and for additional source sets - but nothing for the combination.
Can anyone help?

Answer 1

Here's how you can translate the Groovy script to the Kotlin DSL:
java {
sourceSets {
val integrationTest by creating {
kotlin.apply {
compileClasspath += sourceSets["main"].output + configurations.testRuntimeClasspath
runtimeClasspath += output + compileClasspath
}
}
}
}
configurations["integrationTestCompile"].extendsFrom(configurations["testCompile"])
configurations["integrationTestRuntime"].extendsFrom(configurations["testRuntime"])
val integrationTest by tasks.creating(Test::class) {
val integrationTestSourceSet = java.sourceSets["integrationTest"]
testClassesDirs = integrationTestSourceSet.output.classesDirs
classpath = integrationTestSourceSet.runtimeClasspath
}
Also see: the Migrating build logic from Groovy to Kotlin guide by Gradle