Integration tests with Gradle Kotlin DSL

Question

I\'m using this blog post to configure integration tests for a Spring Boot project, but I\'m pretty stuck on declaring the source sets. I also found this post on StackOverfl

Answer 1

I was finally able to figure it out thanks to some help on the Kotlin Slack channel. First of all I had to upgrade to Gradle version 4.10.2.

For more info have a look at these two pages from Gradle:

• https://docs.gradle.org/release-nightly/userguide/organizing_gradle_projects.html#sec:separate_test_type_source_files
• https://docs.gradle.org/release-nightly/userguide/organizing_gradle_projects.html#sec:separate_test_type_source_files

Then I just had to create the sourceSets for the integrationTests

sourceSets {
    create("integrationTest") {
            kotlin.srcDir("src/integrationTest/kotlin")
            resources.srcDir("src/integrationTest/resources")
            compileClasspath += sourceSets["main"].output + configurations["testRuntimeClasspath"]
            runtimeClasspath += output + compileClasspath + sourceSets["test"].runtimeClasspath
    }
}

This would work just fine for Java, but since I'm working with Kotlin I had to add an extra withConvention wrapper

sourceSets {
    create("integrationTest") {
        withConvention(KotlinSourceSet::class) {
            kotlin.srcDir("src/integrationTest/kotlin")
            resources.srcDir("src/integrationTest/resources")
            compileClasspath += sourceSets["main"].output + configurations["testRuntimeClasspath"]
            runtimeClasspath += output + compileClasspath + sourceSets["test"].runtimeClasspath
        }
    }
}

In the docs they only put runtimeClasspath += output + compileClasspath, but I added sourceSets["test"].runtimeClasspath so I can directly use the test dependencies instead of declaring new dependencies for the integrationTest task.

Once the sourceSets were created it was a matter of declaring a new task

task("integrationTest") {
    description = "Runs the integration tests"
    group = "verification"
    testClassesDirs = sourceSets["integrationTest"].output.classesDirs
    classpath = sourceSets["integrationTest"].runtimeClasspath
    mustRunAfter(tasks["test"])
}

After this the tests still didn't run, but that was because I'm using JUnit4. So I just had to add useJUnitPlatform() which makes this the final code

task("integrationTest") {
    description = "Runs the integration tests"
    group = "verification"
    testClassesDirs = sourceSets["integrationTest"].output.classesDirs
    classpath = sourceSets["integrationTest"].runtimeClasspath
    mustRunAfter(tasks["test"])
    useJUnitPlatform()
}