and:
        file("src/main/java/somepackage/SomeClass.java") << "public class SomeClass { }"
        file("settings.gradle") << "rootProject.name='javaOnly'"

        when:
        run "build"

        then:
        file("build/libs/javaOnly.jar").exists()
    }

    def "supports central repository declaration"() {
        given:
        buildFile << """
plugins {
    id 'groovy'
}