Kctf

Kctf is a Gradle Plugin for the Kotlin Compiler Test Framework (Kctf).

It factors some of the Gradle configuration and boilerplate needed to setup tests for your Kotlin compiler plugin.

Get started

Configure your build

plugins {
  id("org.jetbrains.kotlin.jvm")
  id("com.gradleup.kctf").version("2.2.20-RC-0.0.0")
}

dependencies {
  // Add the kctf runtime, it pulls the kotlin test framework transitively
  testImplementation(libs.kctf.runtime)
}

Write your abstract tests:

@TestMetadata("compiler-tests/src/test/data/box")
open class AbstractBoxTest : AbstractFirLightTreeBlackBoxCodegenTest() {
  override fun createKotlinStandardLibrariesPathProvider(): KotlinStandardLibrariesPathProvider {
    return ClasspathBasedStandardLibrariesPathProvider
  }

  override fun configure(builder: TestConfigurationBuilder) {
    super.configure(builder)

    with(builder) {
      configurePlugin()

      defaultDirectives {
        +FULL_JDK
        +WITH_STDLIB
        +IGNORE_DEXING
      }
    }
  }
}

Call the kctfGenerateSources task:

./gradlew kctfGenerateSources

Kctf generates your test in src/test/java:

/** This class is generated by {@link kctf.MainKt}. DO NOT MODIFY MANUALLY */
@SuppressWarnings("all")
@TestMetadata("compiler-tests/src/test/data/diagnostic")
@TestDataPath("$PROJECT_ROOT")
public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
  // ...
}