How to configure Kotlin for tests in Android Studio I just started using Kotlin in my Android project. The project compiles and runs. But when I try to convert an instrumented test file from Java to Kotlin i get the dialog "Kotlin is not configured in the project. You will have to configure Kotlin in project before performing a conversion." Here is my build.gradle file import com.android.ddmlib.IDevice import com.android.ddmlib.NullOutputReceiver apply plugin: 'com.android.application' apply plugin: 'kotlin-android' //...